Question 1

What level of thermal resistance in elastomer membranes such as EPDM and NBR is critical in exothermic reactions?

Accepted Answer

The technical starting point is the polymer structure of the pump diaphragm; EPDM remains stable up to approximately 130°C, and NBR up to 100°C. If these limits are exceeded, plasticizers diffuse out of the elastomer, leading to embrittlement and microcracking. The result is premature membrane failure; therefore, at temperatures above 100°C, our project engineers primarily validate the use of PTFE membranes with EPDM backing to ensure MTBF optimization for AODD systems.

Question 2

How does the resistance of plastic enclosures to corrosive acids affect the integrity of the enclosures?

Accepted Answer

The pump’s design utilizes materials such as PP or PVDF to ensure chemical inertness against highly concentrated acids. This prevents corrosion, which would lead to wall thinning in metal pumps. The risk lies in mechanical weakening due to stress corrosion cracking under simultaneous pressure loads; our quality assurance department validates the material batch of every compressed-air diaphragm pump for chemical applications.

Question 3

What certification for double-diaphragm pumps in ATEX zones is required in environments containing solvents?

Accepted Answer

The starting point is the classification of the zone (e.g., Zone 1), which requires a conductive housing design. The certification is based on the dissipation of electrostatic charges generated by the friction of the medium against the housing wall. Failure to comply can result in sparking and a risk of explosion; therefore, our technicians always integrate a ground connection into the housing of the pneumatic diaphragm pumps.

Question 4

Why is preventing icing in the air control valve critical for continuous operation?

Accepted Answer

The technical principle is based on the adiabatic expansion of compressed air within the air control valve. The rapidly cooling exhaust air causes the moisture in the air system to freeze, which blocks the valve passages. The result is a sudden pump shutdown; at HARTON, we rely on generously sized silencers and flow-optimized pilot valves to ensure continuous operation even under high humidity conditions.

Question 5

How is diaphragm rupture monitored in pump systems to prevent environmental leaks?

Accepted Answer

The system architecture incorporates a diaphragm rupture sensor in the air chamber behind the work chamber. It immediately detects any ingress of medium and triggers an emergency shutdown of the air supply via a solenoid valve. The consequence of a missing sensor is the release of chemicals into the atmosphere through the air outlet; our project engineers strongly recommend this system for hermetic double-diaphragm systems when handling toxic substances.

Question 6

What effect of air pressure on the flow-head curve should be taken into account in the specifications?

Accepted Answer

The starting point is the 1:1 pressure ratio between the drive air and the discharge pressure in AODD pumps. The air pressure must overcome the system’s back pressure plus internal friction losses. An insufficient air supply results in an unstable flow rate; therefore, we always validate the performance data of compressed-air diaphragm pumps with a safety margin of 1 bar above the calculated system pressure.

Question 7

Why is the flow behavior of solids-laden media in the valve chamber a no-go for standard ball valves?

Accepted Answer

In the extraction of chemical raw materials, this leads to extreme wear on the valve seats. Using soft elastomer balls with sharp-edged particles is a no-go, as they will be cut to pieces. The mechanical consequence is a failure of the check valve function; we rely on ball valves made of high-strength 316L stainless steel or NBR-coated materials to maintain the seal integrity of the oscillating positive displacement pumps.

Question 8

What are the advantages of dry-running positive displacement technology when draining tanks?

Accepted Answer

The design of the self-priming diaphragm pump allows for dry running without causing thermal damage to the sliding surfaces, since no fluid-cooled bearings are required. The result is a high degree of process flexibility during “suction operation”; unlike centrifugal pumps, this is ideal for draining residual fluid, as no cavitation damage occurs.

Question 9

How does HARTON calculate air consumption in compressed air networks to optimize MTBF?

Accepted Answer

We calculate air consumption based on the pump’s stroke frequency and stroke volume. Excessive air consumption indicates worn O-rings in the control block. A measurable threshold is a 20% increase in consumption above the factory specification; our technicians proactively adjust the air motor’s maintenance intervals to match the actual load.

Question 10

What technical selection criteria for AODD systems are prioritized in B2B pump procurement?

Accepted Answer

The most important criterion is the chemical compatibility of the wetted parts. In addition, it must be determined whether a pulsation damper is necessary to protect the piping. The consequences of an incorrect selection include housing corrosion or pipeline rupture; our project engineers create a detailed compatibility matrix for each specification.

Question 11

How does the flow behavior of solids-laden media in the valve chamber affect wear in the slurry?

Accepted Answer

The technical basis for this is the high density and abrasiveness of the slurry. This leads to turbulence that acts on the housing like sandblasting. The mechanical result is material erosion; to optimize MTBF, we use housings made of aluminum with a ceramic lining or thick-walled 316L stainless steel to significantly extend service life.

Question 12

What specifications are required for air-operated diaphragm pumps used to feed filter presses?

Accepted Answer

The design must be capable of operating under conditions of increasing pressure and decreasing flow rate (stall condition). This allows the pump to simply stop at the end of the filtration process without sustaining damage. With centrifugal pumps, this would lead to overheating; our technicians validate the pressure ratio to achieve the optimal discharge pressure for industrial wastewater filtration.

Question 13

Why is it necessary to schedule the replacement of membranes and valve balls more frequently in the ceramics industry?

Accepted Answer

The technical starting point is mechanical abrasion caused by mineral particles. Worn balls no longer seal properly in their seats, leading to backflow of the medium and a loss of performance; HARTON recommends ball valves made of solid polyurethane or Santoprene for this application, as these materials offer high abrasion resistance in slurry conveyance.

Question 14

What are the advantages of dry-running positive displacement technology for cleaning mill tanks?

Accepted Answer

The design of the self-priming diaphragm pump allows residual quantities to be evacuated from deep pits. The dry-run protection safeguards the pump from damage when air is drawn into the line. The result is complete tank emptying; our pumps can achieve a head of up to 5 meters of water when running dry, thereby increasing the efficiency of cleaning processes.

Question 15

How is operating pressure monitored to prevent pipe breaks?

Accepted Answer

The system architecture uses a pilot valve that shuts off the air pressure when a threshold value is reached. This protects the often delicate piping in ceramic production from excessive pressure. Without this protection, the pipes would burst in the event of a blockage; to address this, our project engineers often integrate a mechanical pressure relief valve as a bypass solution.

Question 16

Which certification for double-diaphragm pumps in ATEX zones applies to dusty environments?

Accepted Answer

Fine, conductive dust is often present in ceramic manufacturing. Certification must include dust explosion protection to prevent ignition sources caused by frictional heat or flying sparks; we validate the surface temperatures of the pneumatic diaphragm pumps in accordance with temperature class T4.

Question 17

Why is integration with decentralized glaze dosing stations critical to the process?

Accepted Answer

The design calls for direct integration with the spray booths. This allows for precise control of the stroke frequency via a needle valve in the air line. The result is a uniform glaze application; we often supply these units on mobile stainless-steel stands for maximum flexibility in membrane pump system design.

Question 18

To what extent is it necessary to minimize pressure pulsations in slurry lines using pulsation dampers?

Accepted Answer

The technical basis for this is the inertia of the heavy slurry in long pipes. This prevents water hammer, which could damage valves and mountings. The mechanical result is smooth system operation; unlike standard solutions, we use slurry-resistant dampers with a large diaphragm area.

Question 19

How does HARTON verify leak-tightness after repair work on damage caused by abrasion?

Accepted Answer

We validate the pump by conducting a performance test with water, during which the final pressure is maintained against a closed valve. This shows whether the housing seals still lie flat after material wear. One measurable threshold is the pump’s “after-run” while at a standstill; our quality assurance department documents stroke stability as proof of quality for the low-maintenance AODD systems.

Question 20

Which specifications for industrial double-diaphragm pumps are relevant to the waste management industry?

Accepted Answer

When procuring pumps for the waste management industry (e.g., sewage sludge), the pump must be capable of handling large solids. This often leads to the selection of pumps with butterfly valves, as ball valves would cause constant blockages; our project engineers validate the particle sizes to ensure trouble-free operation in industrial wastewater filtration.

Question 21

How does the integration of diaphragm pumps into process systems ensure consistent ink application?

Accepted Answer

The technical starting point is the integration for supplying spray guns. The constant pressure applied to the diaphragm ensures a uniform flow of material. Unstable pressure causes fluctuations in coat thickness; to minimize pressure pulsations, we use active dampers that smooth out the typical stroke signal of compressed-air-driven double-diaphragm pumps.

Question 22

What advantages does the dead-center-free pneumatic control valve offer for automated paint lines?

Accepted Answer

The design uses the valve to prevent the pump from getting stuck during the changeover phase. The mechanical logic ensures that the pump restarts even after a long period of inactivity under pressure. With a standard valve, critical dosing processes would come to a halt; HARTON validates this function through long-term testing to ensure process reliability.

Question 23

Why is the resistance of PTFE membranes to solvents a disqualifying factor when selecting a pump?

Accepted Answer

In the coatings industry, aggressive solvents such as MEK or toluene are often pumped. Only reinforced PTFE membranes prevent chemical degradation. With EPDM, the membrane swells, blocking the stroke; our manufacturing specialists categorically rule out the use of simple elastomers for this application.

Question 24

How is the stroke frequency monitored in diaphragm pumps to control the paint flow rate?

Accepted Answer

The design incorporates an inductive stroke counter on the air motor, which allows for the precise measurement of the volume delivered per unit of time. The result is precise coating thickness control; we provide suitable interfaces for pneumatic remote control to integrate the pump directly into the paint shop’s PLC.

Question 25

What MTBF optimization for AODD systems is recommended for high pigment loads in the paint industry?

Accepted Answer

The technical starting point is the abrasiveness of the pigments, which causes wear on the ball valve and seat. The optimization involves the use of tungsten carbide balls. A measurable limiting factor is the loss of suction power; a hardened version increases service life by a factor of 5 compared to Santoprene.

Question 26

Which mounting option on mobile stainless steel racks is recommended for flexible use in production?

Accepted Answer

The design allows for the pump to be mounted on various mixing tanks. The mechanical operating mechanism allows for quick connection to the compressed air network via a quick-connect coupling. This results in reduced setup times; HARTON often designs these units as modular drum pump systems for the direct emptying of 200-liter drums.

Question 27

How does the thermal resistance of Santoprene membranes affect their use in heated paint recirculation systems?

Accepted Answer

The starting point is the process temperature (e.g., 60°C to reduce viscosity), which must fall within Santoprene’s temperature resistance range. Elasticity and tear strength decrease with heat. The result is premature cracking in the walking zone; we validate service life through thermal stress cycles to ensure durability during hot operation.

Question 28

What type of leak test is required for solvent-filled pumps after repair work?

Accepted Answer

We validate integrity using a pressure drop test (air) followed by a liquid test. This ensures that all housing screws are properly tightened, as plastic housings can settle under load. Inadequate testing poses a fire hazard due to leakage; our quality assurance department documents every test run prior to shipment.

Question 29

Why is the handling of abrasive media a technical selection criterion for mining technology?

Accepted Answer

In the mining industry, pumps must handle coarse particles. We primarily use butterfly valves instead of ball valves, as they allow larger solids to pass through. Ball valves would become constantly clogged; HARTON validates the passage sizes to ensure trouble-free conveyance of abrasive media in underground mining.

Question 30

Which energy-efficient AODD pumps can help reduce compressed air costs in the B2B sector?

Accepted Answer

When procuring equipment, we look for air motors with minimal dead volume. Highly efficient control systems require up to 30% less compressed air. As a result, the additional costs are recouped within 12 months; our project engineers will prepare an air consumption analysis for your entire membrane pump system.

Question 31

What performance specifications of compressed-air diaphragm pumps are critical for pumping high-viscosity sauces?

Accepted Answer

The technical starting point is the dynamic viscosity of the fluid (e.g., ketchup, up to 20,000 mPas). Large valve cross-sections keep flow resistance low. If the pump is too small, there will be a significant drop in flow rate; we validate the suction capacity for viscous media, and 316L stainless steel housings are mandatory for food hygiene.

Question 32

Why is FDA-compliant certification of double-diaphragm pumps a no-go for standard industrial pumps?

Accepted Answer

Only FDA-approved materials may be used in food production. Standard NBR or industrial plastics could leach substances into the food. The certification guarantees the absence of migration; HARTON uses only electropolished surfaces and white EPDM or PTFE membranes to meet purity standards.

Question 33

How does the operation of the pneumatic control valve ensure sterility?

Accepted Answer

The design strictly separates the air drive from the media chamber to prevent drive air (which could contain oil or bacteria) from entering the food. A perforation in the diaphragm would be catastrophic; as a safety measure, we have incorporated a leak detection system that immediately shuts down the pump upon contact with the medium.

Question 34

What level of thermal resistance is required for elastomer diaphragms in CIP cleaning processes?

Accepted Answer

The technical starting point is a cleaning temperature of up to 95°C using caustic soda. EPDM membranes must withstand these cycles without losing their shape. Cheap elastomers become sticky when heated and block the valve balls, leading to hygiene issues; we validate the service life of the membranes under CIP conditions.

Question 35

What are the advantages of the modular design of barrel pump units for extracting fruit juice concentrate?

Accepted Answer

The design accommodates long suction tubes for standard drums. This enables low-pulsation emptying directly into the mixing tank. The result is a reduction in manual handling; our technicians often deliver these systems on mobile stainless-steel stands for maximum mobility in production.

Question 36

How does minimizing pressure pulsations affect dosing accuracy in beverage filling?

Accepted Answer

The starting point is the cyclic operation of the diaphragms. Pulsation dampers smooth out the flow to such an extent that downstream flow meters can operate with precision. The mechanical result is an exact fill weight; in contrast to an undamped feed pump, this allows us to achieve a consistency of ±1%.

Question 37

Why are leak tests after repair work on hygienic pumps particularly rigorous?

Accepted Answer

We verify integrity after every membrane replacement by conducting a pressure test and a visual inspection of the dead spaces. This prevents product residues from entering the air space and fermenting there. An installation error could lead to microbiological contamination; our quality assurance team uses special endoscopes to inspect the valve chambers.

Question 38

Which energy-efficient AODD pumps should be purchased to optimize operating costs at the dairy?

Accepted Answer

When procuring equipment, we look for air motors with built-in energy-saving circuits. In 24/7 operation, compressed air costs exceed the initial purchase price within a matter of months. The result is a significant reduction in TCO; our project engineers calculate the return on investment for your diaphragm pump systems.

Question 39

How does the stroke frequency of diaphragm pumps affect the shear sensitivity of dairy products?

Accepted Answer

The technical starting point is the mechanical stress placed on the medium as it flows through the valves. A lower frequency preserves the structure of, for example, yogurt and prevents the fat molecules from “breaking apart.” If the frequency is too high, it leads to a visible reduction in quality; we validate the optimal frequency for your oscillating positive displacement pump.

Question 40

What technical selection criteria for AODD systems apply to high-proof alcohol?

Accepted Answer

The most important criterion is ATEX certification combined with FDA compliance. Grounded stainless steel housings prevent sparks from forming due to static electricity. An incorrect choice for beverage filling would pose a massive safety risk; our technicians specify only pumps with conductive PTFE diaphragms and validated grounding points for distilleries.

Question 41

What performance specifications of compressed-air diaphragm pumps are critical for slurry transport?

Accepted Answer

The technical starting point is the high solids content (up to 40%) and the density of the sewage sludge. The pumps must have sufficient capacity to handle sudden increases in viscosity and be able to build up pressure even when the line is nearly clogged. With centrifugal pumps, this would result in a shaft breakage; we validate the service life of the ball valve units against abrasive particles in environmental engineering.

Question 42

How does monitoring for membrane failure prevent environmental accidents at wastewater treatment plants?

Accepted Answer

The system uses an optical or capacitive diaphragm rupture sensor that detects sludge in the air housing and immediately shuts down the units. Without the sensor, sludge would be blown into the compressed air network of the entire plant; our project engineers integrate this system as standard to ensure process safety.

Question 43

What are the advantages of dry-running positive displacement technology for mine dewatering?

Accepted Answer

The starting point is the irregular flow into the collection tank. The technology allows the pump to run “dry” until fluid is available again and prevents overheating damage to the seals. The result is low-maintenance automatic operation; HARTON validates the suction capacity to guarantee a reliable start even with long suction lines.

Question 44

Why is handling abrasive media a no-go for standard plastic valves?

Accepted Answer

Sand and stones are common in wastewater treatment systems. PP valve seats would be washed out immediately, leading to a loss of self-priming due to leaks; we therefore use seats made of 316L stainless steel or hardened polyurethane to minimize maintenance costs.

Question 45

How are diaphragm pumps controlled via proportional valves for flocculant dosing?

Accepted Answer

The design calls for control via proportional valves in the air supply line, which allows for precise regulation of the flow rate via air pressure. The result is precise dosing of polymers for sludge dewatering; we supply suitable interfaces for pneumatic remote control to integrate the system into the central wastewater treatment plant PLC.

Question 46

What MTBF optimization measures are necessary for AODD systems when handling corrosive industrial wastewater?

Accepted Answer

The technical starting point is the fluctuating pH value. The optimization involves the use of housings made of PVDF or specially coated cast iron to prevent pitting corrosion on the housing. If the wrong material were chosen, leakage would occur after just a few months; our technicians validate resistance to a wide range of chemicals.

Question 47

How does the stroke frequency of diaphragm pumps affect the service life of check valves?

Accepted Answer

The starting point is the mechanical impact load per stroke. Reducing the speed by 20% can double the service life of the ball valve assembly, as it reduces the impact energy of the ball against the seat. The result is a significant reduction in replacement part costs; we optimize the pump size for the efficient medium-load range.

Question 48

What type of leak test is important for mobile emergency pumps after repair work?

Accepted Answer

We test operational readiness under maximum suction vacuum to ensure that the pump begins suction immediately in an emergency. An installation error would result in a loss of time during an emergency; our quality assurance department documents the suction time for each mobile unit as a guarantee of functionality.

Question 49

Why is it beneficial to minimize pressure pulsations in filter press applications?

Accepted Answer

The design includes a pulsation damper located directly in front of the filter press, which protects the filter cloths from mechanical fatigue caused by constant pressure surges. The result is a longer service life for the cloths and more uniform cake formation; HARTON validates the damping performance for industrial wastewater filtration.

Question 50

What technical selection criteria for AODD systems apply to underground mining?

Accepted Answer

The most important criteria are resistance to external influences and certification for ATEX zones (protection against firedamp). A solid metal housing made of aluminum or gray cast iron is required. A lightweight plastic housing would fail mechanically if struck by falling rocks; our project engineers specify specially reinforced versions for these extreme conditions.

Question 51

What performance specifications are required for air-operated diaphragm pumps used in mine dewatering applications with high sediment content?

Accepted Answer

The technical starting point is the particle size and the static back pressure in deep shafts. The displacement effect of the AODD pumps lifts even 'viscous' sediments. If performance is insufficient, solids will settle in the riser pipe; we validate the pumping capacity of the units for maximum head differences.

Question 52

How does the wear protection provided by reinforced PTFE membranes prevent failure when exposed to chemically contaminated mine water?

Accepted Answer

The starting point is the water’s composition, which is often acidic or saline. Reinforced PTFE membranes offer chemical resistance even under mechanical stress caused by sand and prevent the membrane from tearing due to corrosion. HARTON uses fabric reinforcements to ensure dimensional stability under high pressure.

Question 53

Why is an air control valve without a dead center essential in mining when air pressure fluctuates?

Accepted Answer

In extensively branched mine networks, air pressure often fluctuates significantly. The valve ensures that the pump starts up safely even at 1.5 bar and prevents the gate valve from “jamming” in the middle position. Otherwise, this would result in a failure of the dewatering system; our manufacturing specialists validate the startup behavior under the most challenging conditions.

Question 54

What are the advantages of mounting the equipment on mobile stainless-steel frames for tunneling?

Accepted Answer

The design calls for mounting the pump on mobile stainless-steel frames or skids so that it can be moved along with the drilling progress. This allows for quick relocation without the need for a crane. The result is a significant time savings; we often deliver these units with an integrated silencer and air maintenance unit as ready-to-operate units for sump operation.

Question 55

How does the flow behavior of solids-laden media influence the choice of valve type?

Accepted Answer

The technical starting point is the diameter of the stones contained within. Ball valves often become clogged, which is why butterfly valves are chosen, as they allow solids to pass through to nearly the full cross-section of the pipe. The result is trouble-free operation; we validate the flow rates for your specific mining application.

Question 56

What MTBF optimization for AODD systems is recommended under extreme environmental conditions?

Accepted Answer

The technical challenges stem from dust, moisture, and mechanical shocks. The optimization includes enclosing the air motor and using wear liners in the housing, which protects the core components. The result is a reduction in unplanned downtime; our technicians often recommend 316L stainless steel housings due to their extreme impact resistance.

Question 57

How is the leak test following repair work validated under field conditions?

Accepted Answer

We validate the repair on-site using a hand pump and a vacuum gauge to ensure that the diaphragms are properly secured. A mistake would result in a loss of suction underground; our quality assurance department provides simple checklists for maintenance personnel to follow.

Question 58

What certification for double-diaphragm pumps for ATEX zones is required for coal mining?

Accepted Answer

The starting point is the risk posed by methane gas (fire and gas). Group I (mining) certification is required by law in this context. Aluminum is prohibited due to the risk of sparks upon impact; HARTON primarily uses cast iron or stainless steel to meet the strictest safety requirements.

Question 59

Why is minimizing pressure pulsations in long risers critical?

Accepted Answer

In deep mines, the risers are often hundreds of meters long. Pulsation dampers prevent mechanical resonances that could tear the pipe supports out of the rock. The mechanical result is a stable vibration state for the system; unlike an undamped pump, this helps protect the entire infrastructure.

Question 60

What technical selection criteria for AODD systems apply to the conveyance of flotation chemicals?

Accepted Answer

The most important criterion is resistance to xanthates and other aggressive minerals. This leads to the selection of PVDF or PTFE as the material. An incorrect choice of material would result in the chemical degradation of the pump; our project engineers validate compatibility to ensure process safety within the mining process.

Noise level	≤ 80 dB(A)
Max. delivery head	≤ 70 m
Suction height	≤ 4 m
Max. particle size	≤ 3 mm
Max. Temperature	60 °C
Max. flow rate	≤ 500 l/min

Flow rate	100 l/min
Delivery head	70 m at 7 bar
Air consumption	Up to 50% lower

Flow rate	100 l/min
Delivery head	70 m at 7 bar
Air consumption	Up to 50% lower

Flow rate	38 l/min
Delivery head	70 m at 7 bar
Air consumption	Up to 50% lower

Flow rate	38 l/min
Delivery head	70 m at 7 bar
Air consumption	Up to 50% lower

Flow rate	50 l/min
Delivery head	70 m at 7 bar
Air consumption	Up to 50% lower

Flow rate	150 l/min at 7 bar
Delivery head	70 m at 7 bar
Suction height	≤ 5 m
Max. particle size	Ø 4 mm
Maximum temperature for PP	60 °C
Maximum temperature for PVDF, aluminum, and stainless steel	95 °C
Max. Viscosity	50.000 cps
Suction port	1″ BSP F
Pressure connection	1″ BSP F
Compressed air connection	1/2″ BSP F
Noise level	≤ 82 dB(A)

Flow rate	17 l/min at 7 bar
Delivery head	70 m at 7 bar
Max. particle size	Ø 0,5 mm
Maximum temperature for PP	60 °C
Max. Temperatur bei ECTFE	95 °C
Max. Viscosity	50.000 cps
Suction port	3/8″ BSP F
Pressure connection	3/8″ BSP F
Compressed air connection	3/8″ BSP F
Suction height	≤ 3 m
Noise level	≤ 70 dB(A)

Flow rate	220 l/min at 7 bar
Delivery head	70 m at 7 bar
Suction height	≤ 5 m
Max. particle size	Ø 5 mm
Maximum temperature for PP	60 °C
Maximum temperature for PVDF, aluminum, and stainless steel	95 °C
Max. Viscosity	50.000 cps
Suction port	1 ¼″ BSP F
Pressure connection	1 ¼″ BSP F
Compressed air connection	1/2″ BSP F
Noise level	≤ 82 dB(A)

Flow rate	340 l/min at 7 bar
Delivery head	70 m at 7 bar
Suction height	≤ 6 m
Max. particle size	Ø 6 mm
Maximum temperature for PP	60 °C
Maximum temperature for PVDF, aluminum, and stainless steel	95 °C
Max. Viscosity	50.000 cps
Suction port	1 ½″ BSP F
Pressure connection	1 ½″ BSP F
Compressed air connection	1/2″ BSP F

Flow rate	30 l/min at 7 bar
Delivery head	70 m at 7 bar
Suction height	≤ 5 m
Max. particle size	Ø 2 mm
Maximum temperature for PP	60 °C
Max. Temperatur bei PVDF, Aluminium und Inox	95 °C
Pressure connection	1/2″ BSP F
Suction port	1/2″ BSP F
Max. Viscosity	50.000 cps
Compressed air connection	1/4″ BSP F
Noise level	≤ 80 dB(A)

Flow rate	5 l/min at 7 bar
Delivery head	70 m at 7 bar
Suction height	≤ 3 m
Max. particle size	Ø 0 mm
Max. Temperature	-60 °C for PP
Max. Viscosity	50.000 cps
Pressure connection	¼″ BSP F
Suction port	¼″ BSP F
Compressed air connection	1/8″ BSP F
Noise level	≤ 65 dB(A)
Explosion Protection	Ex II 3/3 GD c IIB T135 °C

Flow rate	50 l/min at 7 bar
Delivery head	70 m at 7 bar
Suction height	≤ 5 m
Max. particle size	Ø 4 mm
Maximum temperature for PP	60 °C
Maximum temperature for PVDF, aluminum, and stainless steel	95 °C
Max. Viscosity	50.000 cps
Suction port	1/2″ BSP F
Pressure connection	1/2″ BSP F
Compressed air connection	3/8″ BSP F
Noise level	≤ 80 dB(A)

Flow rate	650 l/min at 7 bar
Delivery head	70 m at 7 bar
Suction height	≤ 4 m
Max. particle size	Ø 8 mm
Maximum temperature for PP	60 °C
Maximum temperature for PVDF, aluminum, and stainless steel	95 °C
Max. Viscosity	50.000 cps
Suction port	2″ BSP F
Pressure connection	2″ BSP F
Compressed air connection	1/2″ BSP F
Noise level	≤ 82 dB(A)

Max. flow rate	≤ 650 l/min
Max. delivery head	≤ 70 m
Suction height	≤ 4 m
Max. particle size	≤ 8 mm
Max. Temperature	95 °C

Viscosity	50 - 500.000 mPa·s
Temperature	-10 bis +80 °C
Materials	Stainless steel, PTFE, FKM
ATEX	yes
Dosing capacity	0,1 - 1.500 l/h
Pressure	up to 8 bar
Accuracy	±1 - 3 %
Media	Abrasive liquids, Sludge, Wastewater

Dosing capacity	0,1 - 2.000 l/h
Pressure	up to 8 bar
Accuracy	±1 - 3 %
Media	Acids, Lye, Solvent, harsh chemicals
Viscosity	10 - 500.000 mPa·s
Temperature	-10 bis +120 °C
Materials	PTFE, PVDF, Stainless steel
ATEX	yes

Viscosity	1 - 500 mPa·s
Temperature	-10 to +80 °C
Materials	Stainless steel, PTFE, PVDF
ATEX	optional
Dosing capacity	0,1 - 10.000 l/h
Pressure	up to 8 bar
Accuracy	±2 - 5 %
Media	Water, Wastewater, chemical liquids

Pressure	up to 16 bar
Accuracy	±0,5 - 2 %
Media	Chemicals, viscous liquids
Viscosity	50 - 100.000 mPa·s
Temperature	-20 to +120 °C
Materials	Stainless steel, Aluminum, PTFE
ATEX	yes
Dosing capacity	0,1 - 1.000 l/h

Flow rate	900 l/min at 7 bar
Delivery head	70 m at 7 bar
Suction height	≤ 5 m
Max. particle size	Ø 10 mm
Maximum temperature for PP	60 °C
Maximum temperature for PVDF, aluminum, and stainless steel	80 °C
Max. Viscosity	50.000 cps
Suction port	3″ BSP F
Pressure connection	3″ BSP F
Compressed air connection	3/4″ BSP F
Noise level	≤ 82 dB(A)

Flow rate	100 l/min at 7 bar
Delivery head	70 m at 7 bar
Suction height	≤ 6 m
Max. particle size	Ø 4 mm
Maximum temperature for PP	60 °C
Maximum temperature for PVDF, aluminum, and stainless steel	95 °C
Max. Viscosity	50.000 cps
Suction port	1″ BSP F
Pressure connection	1″ BSP F
Compressed air connection	1/2″ BSP F
Noise level	≤ 82 dB(A)

Air-Operated Diaphragm Pumps (AODD) - Efficient and Reliable Pumping for Demanding Fluids

Why Choose Compressed Air Diaphragm Pumps from Harton Anlagentechnik GmbH?

Technical Specifications and Operating Limits of Compressed Air Diaphragm Pumps

Media and Process Fluids for Compressed Air Diaphragm Pumps

Materials, Durability, and Tribological Design

Seals, Interfaces, and Safety

Drives, Control, and Energy

Quality, Testing, and Documentation

Service, Maintenance, and Lifespan (TCO)

References and Technical Strengths

Products

Types and Variants of Compressed-Air Diaphragm Pumps

Relevance for Engineers and Technical Buyers

FAQs by Industry