Diaphragm pump

Our Lutz diaphragm pumps combine the properties of the predecessor model with new technical features. It offers a wide range of possible applications, including in the automotive industry, waste water treatment, transferring chemicals, pumping low-viscosity and viscous fluids and in the food sector.

Structure of the diaphragm pump

(1) Outlet

(2) Outlet pipe

(3) Outlet check valve

(4) Air valve

(5) Air chamber

(6) Diaphragm

(7) Liquid chamber

(8) Diaphragm - connecting shaft

(9) Inlet ball valve

(10) Inlet pipe

(11) Inlet

Select a category

Small quantities

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Drum, IBC and tank emptying

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Explosion protection

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Large-scale industry & Plant feeding

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Accessories

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Special features of our double diaphragm pumps?

Optimised air control valve

Increases the efficiency of the pump and reduces the air consumption (depending on the operating point).

Elastomer diaphragm

Use of rubber compounds with embedded nylon fabric to increase mechanical strength in order to extend the service life of the pump. The most common elastomers are based on nitrile butadiene rubber (NBR).

Flow-optimised hydraulic system

Enables higher flow rates due to lower, internal pressure losses.

TFM Membrane

Modified PTFE with refined molecular structure for improved safety and reliability.

Produktvorteile im Überblick

  • hohe hydraulische Leistung
  • optimierter Luftverbrauch
  • eisfreies Luftsystem
  • wartungsoptimierte Konstruktion
  • einfache Installation
  • integrierter Schalldämpfer bis zur Modellgröße DMP 1"
  • trockenlaufsicher
  • absolut ölfrei
  • blockadefreier Betrieb

How our diaphragm pump works:

The overpressure created in the chamber (A) closes the suction valve and opens the pressure valve, allowing the liquid to enter the pressure line. At the same time, the same process takes place in reverse order in the negative pressure area of chamber (B). The pressure valve closes and the suction valve opens so that the liquid can flow in on the suction side.

Installation options for the compressed air double diaphragm pump

Self-priming

If the suction joint is above the liquid level, the pump must suck in the pumped liquid itself. When running dry, the diaphragm pumps can self-prime up to 4.5 m wc and when the suction line is full, a suction head of up to 9 m wc can be achieved.

Submerged operation

Pumps of sizes 1 1/2” and 2” can be submerged in liquids and operated there, provided the pump material is sufficiently resistant and the air outlet is above the liquid level.

Stationary or mobile installation

The pumps can either be mounted stationary or transported as required to different application sites to empty the liquids from different containers.

Flooded suction

If the liquid level is above the suction joint, this is referred to as positive feed. If the maximum inlet pressure is exceeded, the suction line should have appropriate shut-off valves

Hanging construction

For special process requirements, the pump can also be installed in a hanging position.

Our products

Our complete range of diaphragm pumps

Filter
Plastic
PVDF
Compressed air
Double diaphragm pump DMP model 3/8" plastic
for small systems and in laboratories
Description: The double diaphragm pump is suitable for pumping small quantities, in laboratories and for occasional filling operations Typical applications: Chemical circulation and feeding, liquids with solid particles such as paints and varnishes, electroplating liquids, etc. integrated silencer up to model size DMP 1" highly resistant TFM (PTFE) diaphragms (modified PTFE) Features & advantages High hydraulic performance Maintenance-optimised design and easy installation Self-priming (even when dry) Reinforced elastomers and thermoplastic diaphragm Absolutely oil-free blockage-free operation

To enquire this product, please log in here.

Plastic
PP
Compressed air
Double diaphragm pump DMP model 3/8" plastic
for small systems and in laboratories
Description: The double diaphragm pump is suitable for pumping small quantities, in laboratories and for occasional filling operations typical applications: chemical circulation and feeding, liquids with solid particles such as paints and varnishes, electroplating liquids, etc. integrated silencer up to model size DMP 1" Features & advantages High hydraulic performance Maintenance-optimised design and easy installation Self-priming (even when dry) Reinforced elastomers and thermoplastic diaphragm Absolutely oil-free blockage-free operation

To enquire this product, please log in here.

Food
Metall
Stainless steel
Double diaphragm pump DMP model 2" PURE
for the food and pharmaceutical sectors
Description: The double diaphragm pump is suitable for the food and pharmaceutical sectors as well as for large flow rates and higher viscosities. Typical applications: liquid foodstuffs and luxury foods, active pharmaceutical ingredients and cosmetic products Integrated silencer up to model size DMP 1" FDA-compliant Features & benefits High hydraulic performance Maintenance-optimised design and easy installation Self-priming (even when dry) Ice-free air system Blockage-free operation Food-safe connections

To enquire this product, please log in here.

Explosion protection
Kunststoff
PVDF
Double diaphragm pump DMP model 2" plastic explosion-proof
for plant feeders and large-scale industry
Description: The double diaphragm pump 2" PVDF explosion-proof is suitable for large-scale industry and system feeding as well as for large flow rates and higher viscosities. Typical applications: Filter press, tank cleaning system, pigment dyes and resins Integrated silencer up to model size DMP 1" highly resistant TFM (PTFE) diaphragms (modified PTFE) Features & benefits High hydraulic performance Maintenance-optimised design and easy installation Self-priming (even when dry) Absolutely oil-free Blockage-free operation Pumps explosion-proof in accordance with the ATEX directive (explosion protection)

To enquire this product, please log in here.

Plastic
PP
Compressed air
Double diaphragm pump DMP model 2" plastic
for plant feeders and large-scale industry
Description: The double diaphragm pump is suitable for large-scale industry and system feeding as well as for large flow rates and higher viscosities. Typical applications: Filter press, tank cleaning system, pigment dyes and resins Integrated silencer up to model size DMP 1" highly resistant TFM (PTFE) diaphragms (modified PTFE) Features & benefits High hydraulic performance Maintenance-optimised design and easy installation Self-priming (even when dry) Reinforced elastomers and thermoplastic diaphragm Absolutely oil-free blockage-free operation

To enquire this product, please log in here.

Food
Kunststoff
PE
Double diaphragm pump DMP model 2" PEE PURE
for the food and pharmaceutical sectors
Description: The double diaphragm pump is suitable for the food and pharmaceutical sectors as well as for large flow rates and higher viscosities. typical applications: liquid food and luxury foods, active pharmaceutical ingredients and cosmetic products Highly resistant PE material with low coefficient of friction FDA-compliant Features & benefits High hydraulic performance Maintenance-optimised design and easy installation Self-priming (even when dry) Ice-free air system Blockage-free operation Food-safe connections

To enquire this product, please log in here.

Explosion protection
Metal
Aluminium
Double diaphragm pump DMP model 2" metal
for plant feeders and large-scale industry
Description: The double diaphragm pump is suitable for large-scale industry and system feeding as well as for large flow rates and higher viscosities. Typical applications: Transfer from drums and containers, transfer of corrosive solutions and chemicals Integrated silencer up to model size DMP 1" also available in the Pure version (5254-410) Features & benefits High hydraulic performance Maintenance-optimised design and easy installation Self-priming (even when dry) Absolutely oil-free Blockage-free operation Pumps explosion-proof in accordance with the ATEX directive (explosion protection)

To enquire this product, please log in here.

Plastic
PP
Compressed air
Double diaphragm pump DMP model 1/4" plastic
for small systems and in laboratories
Description: The double diaphragm pump is suitable for pumping small quantities, in laboratories and for occasional filling operations typical applications: chemical circulation and feeding, liquids with solid particles such as paints and varnishes, electroplating liquids, etc. integrated silencer up to model size DMP 1" highly resistant TFM (PTFE) diaphragms (modified PTFE) Features & advantages High hydraulic performance Maintenance-optimised design and easy installation Self-priming (even when dry) Reinforced elastomers and thermoplastic diaphragm Absolutely oil-free blockage-free operation

To enquire this product, please log in here.

Plastic
PVDF
Compressed air
Double diaphragm pump DMP model 1/4" mini plastic
for small systems and in laboratories
Description: The double diaphragm pump is suitable for pumping small quantities, in laboratories and for occasional filling operations typical applications: chemical circulation and feeding, liquids with solid particles such as paints and varnishes, electroplating liquids, etc. integrated silencer up to model size DMP 1" highly resistant TFM (PTFE) diaphragms (modified PTFE) Features & advantages High hydraulic performance Maintenance-optimised design and easy installation Self-priming (even when dry) Reinforced elastomers and thermoplastic diaphragm Absolutely oil-free blockage-free operation

To enquire this product, please log in here.

Plastic
PP
Compressed air
Double diaphragm pump DMP model 1/4" mini plastic
for small systems and in laboratories
Description: The double diaphragm pump is suitable for pumping small quantities, in laboratories and for occasional filling operations Typical applications: Chemical circulation and feeding, liquids with solid particles such as paints and varnishes, electroplating liquids, etc. integrated silencer up to model size DMP 1" highly resistant TFM (PTFE) diaphragms (modified PTFE) Features & advantages High hydraulic performance Maintenance-optimised design and easy installation Self-priming (even when dry) Reinforced elastomers and thermoplastic diaphragm Absolutely oil-free blockage-free operation

To enquire this product, please log in here.

Food
Metall
Stainless steel
Double diaphragm pump DMP model 1/2" PURE
for the food and pharmaceutical sectors
Description: The double diaphragm pump is suitable for the food and pharmaceutical sectors as well as for emptying drums, IBCs and tanks. Typical applications: liquid foodstuffs and luxury foods, active pharmaceutical ingredients and cosmetic products Integrated silencer up to model size DMP 1" FDA-compliant Features & benefits High hydraulic performance Maintenance-optimised design and easy installation Self-priming (even when dry) Ice-free air system Blockage-free operation Food-safe connections

To enquire this product, please log in here.

Plastic
PP
Compressed air
Double diaphragm pump DMP model 1/2" plastic
for drum, IBC and tank emptying
Description: The double diaphragm pump is suitable for industrial applications as well as for drum, IBC and tank emptying. Typical applications: 200 litre drums, paint circulation and feeding, feeding of chemicals, solvents, acids and liquid soap Integrated silencer up to model size DMP 1" highly resistant TFM (PTFE) diaphragms (modified PTFE) Features & benefits High hydraulic performance Maintenance-optimised design and easy installation Self-priming (even when dry) Reinforced elastomers and thermoplastic diaphragm Absolutely oil-free blockage-free operation

To enquire this product, please log in here.

Explosion protection
Kunststoff
PVDF
Double diaphragm pump DMP model 1/2" mini plastic
for drum, IBC and tank emptying
Description: The double diaphragm pump is suitable for industrial applications as well as for drum, IBC and tank emptying. Typical applications: 200 litre drums, paint circulation and feeding, feeding of chemicals, solvents, acids and liquid soap Integrated silencer up to model size DMP 1" highly resistant TFM (PTFE) diaphragms (modified PTFE) Features & benefits High hydraulic performance Maintenance-optimised design and easy installation Self-priming (even when dry) Reinforced elastomers and thermoplastic diaphragm Absolutely oil-free blockage-free operation

To enquire this product, please log in here.

Explosion protection
Metall
Aluminium
Double diaphragm pump DMP model 1/2" metal
for drum, IBC and tank emptying
Description: The double diaphragm pump is suitable for industrial applications as well as for drum, IBC and tank emptying. Typical applications: 200 litre drums, paint circulation and feeding, feeding of chemicals, solvents, acids and liquid soap Integrated silencer up to model size DMP 1" also available in the Pure version (5224-410) Features & benefits High hydraulic performance Maintenance-optimised design and easy installation Self-priming (even when dry) Absolutely oil-free Blockage-free operation Pumps explosion-proof in accordance with the ATEX directive (explosion protection)

To enquire this product, please log in here.

Food
Metall
Stainless steel
Double diaphragm pump DMP model 1" PURE
for the food and pharmaceutical sectors
Description: The double diaphragm pump is suitable for the food and pharmaceutical sectors as well as for emptying drums, IBCs and tanks Typical applications: liquid foodstuffs and luxury foods, active pharmaceutical ingredients and cosmetic products Integrated silencer up to model size DMP 1" FDA-compliant Features & benefits High hydraulic performance Maintenance-optimised design and easy installation Self-priming (even when dry) Ice-free air system Blockage-free operation Food-safe connections

To enquire this product, please log in here.

Explosion protection
Kunststoff
PVDF
Double diaphragm pump DMP model 1" plastic explosion-proof
for industrial applications as well as for drum, IBC and tank emptying
Description: The double diaphragm pump 1" PVDF explosion-proof is suitable for industrial applications as well as for drum, IBC and tank emptying. Typical applications: Transfer from drums and containers, transfer of corrosive solutions and chemicals Integrated silencer up to model size DMP 1" highly resistant TFM (PTFE) diaphragms (modified PTFE) Features & benefits High hydraulic performance Maintenance-optimised design and easy installation Self-priming (even when dry) Absolutely oil-free Blockage-free operation Pumps explosion-proof in accordance with the ATEX directive (explosion protection)

To enquire this product, please log in here.

Plastic
PP
Compressed air
Double diaphragm pump DMP model 1" plastic
for industrial applications as well as for drum, IBC and tank emptying
Description: The double diaphragm pump is suitable for industrial applications and for emptying drums, IBCs and tanks. Typical applications: Transfer from drums and containers, transfer of corrosive solutions and chemicals Integrated silencer up to model size DMP 1" highly resistant TFM (PTFE) diaphragms (modified PTFE) Features & benefits High hydraulic performance Maintenance-optimised design and easy installation Self-priming (even when dry) Reinforced elastomers and thermoplastic diaphragm Absolutely oil-free blockage-free operation

To enquire this product, please log in here.

Food
Kunststoff
PE
Double diaphragm pump DMP model 1" PEE PURE
for the food and pharmaceutical sectors
Description: The double diaphragm pump is suitable for the food and pharmaceutical sectors as well as for emptying drums, IBCs and tanks Typical applications: liquid foodstuffs and luxury foods, active pharmaceutical ingredients and cosmetic products Highly resistant PE material with low coefficient of friction FDA-compliant Features & benefits High hydraulic performance Maintenance-optimised design and easy installation Self-priming (even when dry) Ice-free air system Blockage-free operation Food-safe connections

To enquire this product, please log in here.

Explosion protection
Metall
Aluminium
Double diaphragm pump DMP model 1" metal
for drum, IBC and tank emptying
Description: The double diaphragm pump is suitable for industrial applications and for emptying drums, IBCs and tanks. Typical applications: Transfer from drums and containers, transfer of corrosive solutions and chemicals Integrated silencer up to model size DMP 1" also available in the Pure version (5234-410) Features & benefits High hydraulic performance Maintenance-optimised design and easy installation Self-priming (even when dry) Absolutely oil-free Blockage-free operation Pumps explosion-proof in accordance with the ATEX directive (explosion protection)

To enquire this product, please log in here.

Food
Metal
Stainless steel
Double diaphragm pump DMP model 1 1/2" PURE
for the food and pharmaceutical sectors
Description: The double diaphragm pump is suitable for the food and pharmaceutical sectors as well as for large flow rates and higher viscosities. Typical applications: liquid foodstuffs and luxury foods, active pharmaceutical ingredients and cosmetic products Integrated silencer up to model size DMP 1" FDA-compliant Features & benefits High hydraulic performance and optimised air consumption Highly resistant TFM (PTFE) diaphragms (modified PTFE) Maintenance-optimised design and easy installation Self-priming (even when dry) Ideal for shear-sensitive media Food-safe connections

To enquire this product, please log in here.

Explosion protection
Plastic
PVDF
Double diaphragm pump DMP model 1 1/2" plastic explosion-proof
for plant feeders and large-scale industry
Description: The double diaphragm pump 1 1/2" PVDF explosion-proof is suitable for large-scale industry and system feeding as well as for large flow rates and higher viscosities. Typical applications: Filter press, tank cleaning system, pigment dyes and resins Integrated silencer up to model size DMP 1" highly resistant TFM (PTFE) diaphragms (modified PTFE) Features & benefits High hydraulic performance Maintenance-optimised design and easy installation Self-priming (even when dry) Absolutely oil-free Blockage-free operation Pumps explosion-proof in accordance with the ATEX directive (explosion protection)

To enquire this product, please log in here.

Plastic
PP
Compressed air
Double diaphragm pump DMP model 1 1/2" plastic
for plant feeders and large-scale industry
Description: The double diaphragm pump is suitable for large-scale industry and system feeding as well as for large flow rates and higher viscosities. Typical applications: Filter press, tank cleaning system, pigment dyes and resins Integrated silencer up to model size DMP 1" highly resistant TFM (PTFE) diaphragms (modified PTFE) Features & benefits High hydraulic performance Maintenance-optimised design and easy installation Self-priming (even when dry) Reinforced elastomers and thermoplastic diaphragm Absolutely oil-free blockage-free operation

To enquire this product, please log in here.

Food
Kunststoff
PE
Double diaphragm pump DMP model 1 1/2" PEE PURE
for the food and pharmaceutical sectors
Description: The double diaphragm pump is suitable for the food and pharmaceutical sectors as well as for large flow rates and higher viscosities. Typical applications: liquid food and luxury foods, active pharmaceutical ingredients and cosmetic products Highly resistant PE material with low coefficient of friction FDA-compliant Features & benefits High hydraulic performance Maintenance-optimised design and easy installation Self-priming (even when dry) Ice-free air system Blockage-free operation Food-safe connections

To enquire this product, please log in here.

Explosion protection
Metall
Aluminium
Double diaphragm pump DMP model 1 1/2" metal
for plant feeders and large-scale industry
Description: The double diaphragm pump is suitable for large-scale industry and system feeding as well as for large flow rates and higher viscosities. Typical applications: Transfer from drums and containers, transfer of corrosive solutions and chemicals Integrated silencer up to model size DMP 1" also available in the Pure version (5244-410) Features & benefits High hydraulic performance Maintenance-optimised design and easy installation Self-priming (even when dry) Absolutely oil-free Blockage-free operation Pumps explosion-proof in accordance with ATEX directive (explosion protection)

To enquire this product, please log in here.

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