DEPA air operated diaphragm pumps have been designed for the smooth transfer of abrasive, solids and viscous media. Direct pneumatic drive means there is no need for electric motors, base plates and couplings. The compact and efficient design of the pumps is easy to transport, so they can be used flexibly on construction sites, in the mining industry, or stationary in various industries.
"Depa" diaphragm pumps
Designed and manufactured in Dusseldorf, Germany for over 40 years, DEPA® air operated double diaphragm pumps have long earned industry recognition for superior quality and innovative design. DEPA can offer a wide range of pumps to suit various applications, from standard pumps to specially designed products.
Casings in aluminum AL 233, ductile iron GGG 40 and stainless steel 316L are available so that the pumps can be individually adapted to the transfer tasks. Units are produced in five different sizes (types), with connections DN 15 - DN 80, which corresponds to R ½" - R 3". All pumps are delivered ready for operation and need only be connected to the main air supply system.
Metal pumps - in stainless steel housing
DEPA DH new generation pneumatic diaphragm pumps DH15, DH25, DH40, DH50 and DH80 are made of aluminum alloy, designed for high efficiency operations in industry.
Main features
- Special pump design with flexible multi-port connections and free-flow manifold
- Molded feet integrated into the body of the central unit allow for on-site maintenance.
- The block pump and air chambers provide a reliable, well-defined membrane compression mechanism.
Application
The aluminum body material with universally selectable interior space allows it to be adapted to various jobs.
- Paints and coatings industry
- Printing and gluing machines
- Mechanical Engineering and Construction
- Automotive industry
Metal pumps - in a cast iron body
Units are produced in five different sizes (types), with connections DN 15 - DN 80, which corresponds to R ½" - R 3". All pumps are delivered ready for operation and need only be connected to the main air supply system.
Features and benefits
- Ideal for abrasive, viscous and shear sensitive media as well as products containing solid particles.
- Resistant to idle use and harsh conditions.
- Minimal maintenance, no need to lubricate.
- Totally enclosed units with no bearings or rotating seals.
- Easy flow adjustment by adjusting the air supply.
- No electric motors, special gears or support plates are required.
- Easy to carry and ready to use just by connecting to the air supply.
- Can work against a closed outlet, an important advantage when used in bottling machines.
- Self-priming and submersible.
- Solid construction.
Metal pumps - in stainless steel housing
DEPA DH new generation pneumatic diaphragm pumps DH15, DH25, DH40, DH50 and DH80 are made of aluminum alloy, designed for high efficiency operations in industry.
Features and benefits
- Ideal for abrasive, viscous and shear sensitive media as well as products containing solid particles.
- Resistant to idle use and harsh conditions.
- Freestanding design with fewer parts and screws improves performance (on-site maintenance)
- Optimized pump design increases efficiency up to 57% and increases flow rate up to 10%.
Construction materials
- Housing material - Cast stainless steel - 316L
- The central block is available in aluminum (DHxx-SA) and stainless steel - 316L (DHxx-SS).
Pumps made of metals often do not have the required chemical resistance to corrosive media. In order to meet such corrosion resistance requirements, DEPA has developed air operated pumps made of polypropylene, PVDF or PTFE. Various materials are available for housing, diaphragms, valve seats and valve balls, allowing the pumps to be customized. The pumps are produced in 5 or 7 different sizes (types) with connecting flanges according to DIN, ANSI and JIS.
In molded polypropylene housing
Pumps made of machined or specially molded plastic parts are intended for pumping aggressive and abrasive media in electroplating, chemical industry and mechanical engineering.
Construction materials
- Cast polypropylene.
- Snap band design.
Available sizes
- ½” (DH15), 1” (DL25), 1 ½” (DL40), 2″ (DL50), 3″ (DL80)
Features and benefits
- Simple, modular and reliable pump design reduces downtime to a minimum.
- Chemically resistant polypropylene allows the transport of corrosive liquids.
- Equipped with an internal air valve and closed surface diaphragms without an additional membrane plate.
In a solid polypropylene housing
Pumps made of machined or specially molded plastic parts are intended for pumping aggressive and abrasive media in electroplating, chemical industry and mechanical engineering.
Construction materials
- Solid polypropylene.
- Snap band design.
Available sizes
- DL15 (0.5″) DL25 (1″) DL40 (1.5″) DL50 (2″) DL80 (3″)
Features and benefits
- Simple, modular and reliable pump design reduces downtime to a minimum.
- Chemically resistant polypropylene allows the transport of corrosive liquids.
- Equipped with an internal air valve and closed surface diaphragms without an additional membrane plate.
In an electrically conductive polypropylene housing
Pumps made of machined or specially molded plastic parts are intended for pumping aggressive and abrasive media in electroplating, chemical industry and mechanical engineering.
Construction materials
- Solid, electrically conductive polypropylene.
- Snap band design.
Available sizes
- DL15 (0.5″) DL25 (1″) DL40 (1.5″) DL50 (2″)
Features and benefits
- Simple, modular and reliable pump design reduces downtime to a minimum.
- Chemically resistant polypropylene allows the transport of corrosive liquids.
- Equipped with an internal air valve and closed surface diaphragms without an additional membrane plate.
In a solid PVDF housing
Pumps made of machined or specially molded plastic parts are intended for pumping aggressive and abrasive media in electroplating, chemical industry and mechanical engineering.
Construction materials
- Solid polyvinylidene fluoride (PVDF).
- Snap band design.
Available sizes
- DL15 (0.5″) DL25 (1″) DL40 (1.5″) DL50 (2″)
Features and benefits
- Simple, modular and reliable pump design reduces downtime to a minimum.
- Chemically resistant polypropylene allows the transport of corrosive liquids.
- Equipped with an internal air valve and closed surface diaphragms without an additional membrane plate.
In a solid PTFE body
Pumps made of machined or specially molded plastic parts are intended for pumping aggressive and abrasive media in electroplating, chemical industry and mechanical engineering.
Construction materials
- Solid polytetrafluoroethylene (Teflon) (PTFE).
- Snap band design.
Available sizes
- 15 (0.5″) 25 (1″) 40 (1.5″)
Features and benefits
- The improved DEPA TP/TPL line with fewer parts improves pump performance by up to 30% at 7 bar air pressure.
- A redesigned center block, pump chambers and manifolds, including the "block" pump and air chambers, provide secure diaphragm clamping for improved sealing.
- Equipped with an internal air valve and closed surface diaphragms without an additional membrane plate.
In an electrically conductive PTFE housing
Pumps made of machined or specially molded plastic parts are intended for pumping aggressive and abrasive media in electroplating, chemical industry and mechanical engineering.
Construction materials
- Solid electrically conductive polytetrafluoroethylene (Teflon) (PTFE).
- Snap band design.
Available sizes
- 15 (0.5″) 25 (1″) 40 (1.5″)
Features and benefits
- The improved DEPA TP/TPL line with fewer parts improves pump performance by up to 30% at 7 bar air pressure.
- A redesigned center block, pump chambers and manifolds, including the "block" pump and air chambers, provide secure diaphragm clamping for improved sealing.
- Equipped with an internal air valve and closed surface diaphragms without an additional membrane plate.
DEPA DL-UEV pumps are made of polished stainless steel with an average surface roughness Ra of 0.8 μm. The pumps are distinguished by their robust construction, quick and easy disassembly, cleaning and sterilization on site. With a stainless steel frame, the pump can be easily and quickly dried/emptied after on-site cleaning.
In 316L stainless steel housing
The range of polished, stainless steel (316L) pumps have been specially designed for use where the highest standards of hygiene and contamination control are required in a clean and sterile environment.
Features and benefits
The pumps are made of polished stainless steel with a surface roughness index of up to Ra 3.2 μm.
- Special pump design for optimal pumping of liquids and large solids.
- Special V-shaped frame for quick and easy disassembly to reduce downtime and allow easy and complete emptying of the pump.
Construction materials
- Housing material - stainless steel 1.4404/ 316L
- Central block 1.4301/304
- Air chamber 1.4301/304
In 304 stainless steel housing
The range of polished, stainless steel (304) pumps have been specially designed for use where the highest standards of hygiene and contamination control are required in a clean and sterile environment.
Features and benefits
The pumps are made of polished stainless steel with a surface roughness index of up to Ra 3.2 μm.
- Special pump design for optimal pumping of liquids and large solids.
- Special V-shaped frame for quick and easy disassembly to reduce downtime and allow easy and complete emptying of the pump.
Construction materials
- Housing material – stainless steel 1.4301/ 304
- Central block 1.4301/304
- Air chamber 1.4301/304
Variable pressure using DEPA® pumps protects the filter and short fill cycles improve the productivity of the entire filtration process. The pumps are available in 3 sizes and can be customized according to the respective requirements. While the body is made of stainless steel, there are also a variety of elastomeric materials available for the diaphragms, valve seats and valve balls.
In 316L stainless steel housing
The latest generation of high-pressure pumps meet the strictest industry requirements and can pump at pressures up to 21 bar, as well as maintain high performance in the low pressure range (up to 7 bar). They are available in three sizes in stainless steel and have safety valves for maximum pressure control.
Features and benefits
- Extremely economical when working with a closed exhaust (i.e. filter press). No special control devices are required.
- The diaphragm is pressure loaded, creating equal pressure on both sides of the diaphragm.
- Excellent performance in low pressure suction tasks with low air supply pressure.
- Minimal maintenance, no lubrication or oil required.
- Totally enclosed units with no bearings or rotating seals in contact with the current.
- Pneumatic mode means suitability in explosive and hazardous areas and ease of use by simply adjusting the air supply.
- Three connector sizes: 1 inch, 11⁄2 inch and 2 inch.
Variable pressure using DEPA® pumps protects the filter and short fill cycles improve the productivity of the entire filtration process. The pumps are available in 3 sizes and can be customized according to the respective requirements. While the body is made of stainless steel, there are also a variety of elastomeric materials available for the diaphragms, valve seats and valve balls.
Powder pump in an aluminum housing
Depa pneumatic double diaphragm pumps enable economical pumping of powders. Dust free and smooth.
Construction materials
- Housing material – aluminum.
- Snap band design.
Available sizes
- 1” (DP25), 1 ½” (DP40), 2″ (DP50), 3″ (DP80), 4″ (DP125)
Features and benefits
- DEPA powder pumps are portable and mobile.
- Lower cost and more efficient powder transfer than mechanical methods.
- Due to the low air to product ratio (typically 1:3 to 1:5), less air must be removed on the discharge side.
Usage
- Production of plastic products
- Basic chemistry
- Pharmaceutical industry
- Breweries
- Food industry
Powder pump in cast iron housing
Depa pneumatic double diaphragm pumps enable economical pumping of powders. Dust free and smooth.
Construction materials
- Housing material - cast iron.
- Snap band design.
Available sizes
- 1” (DP25), 1 ½” (DP40), 2″ (DP50), 3″ (DP80), 4″ (DP125)
Features and benefits
- DEPA powder pumps are portable and mobile.
- Lower cost and more efficient powder transfer than mechanical methods.
- Due to the low air to product ratio (typically 1:3 to 1:5), less air must be removed on the discharge side.
Usage
- Production of plastic products
- Basic chemistry
- Pharmaceutical industry
- Breweries
- Food industry
In polished stainless steel housing
Depa pneumatic double diaphragm pumps enable economical pumping of powders. Dust free and smooth.
Construction materials
- Housing material – polished stainless steel.
- Snap band design.
Available sizes
- 1” (DP25), 1 ½” (DP40), 2″ (DP50), 3″ (DP80), 4″ (DP125)
Features and benefits
- DEPA powder pumps are portable and mobile.
- Lower cost and more efficient powder transfer than mechanical methods.
- Due to the low air to product ratio (typically 1:3 to 1:5), less air must be removed on the discharge side.
Usage
- Production of plastic products
- Basic chemistry
- Pharmaceutical industry
- Breweries
- Food industry
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