Diaphragm Pumps of 2025
Best Choice1
CozyelCozyel Air-Operated Diaphragm Pump Double Diaphragm Pump 1-1/2 inch Inlet & Outlet, Air Diaphragm Pump Dual Diaphragm Air Pump Aluminum Alloy 44 GPM Max 115PSI, QBK_40L
Main highlights- Rugged construction - resists corrosion for reliable performance and long life.Bolted construction is designed for leak-free fluid handling.
- Good abrasion resistance and heat resistance.
- Easy access to ball checks and fluid caps for maintenance and repairs.
- Air-Operated Double Diaphragm Pump 12GPM 1-1/2Inch Inlet And Outlet. The diaphragm pump features an externally serviceable air distribution system and all-bolted construction, with convenient operating, are widely used in various industries, such as petroleum, metallurgy, mining, coating material, printing, paper making, water treatment, automotive etc.
- A diaphragm pump (also known as a Membrane pump) is a positive displacement pump that uses a combination of the reciprocating action of a rubber, thermoplastic or teflon diaphragm and suitable valves on either side of the diaphragm (check valve, butterfly valves, flap valves, or any other form of shut-off valves) to pump a fluid.
9.7Exceptional
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Value for Money2
EverfloEverflo EF7000-BOX 7.0 GPM 12V Diaphragm Pump-1/2 FNPT Ports, Black
Main highlights- Standard mounting pattern to fit most sprayer tanks
- Self priming up to twelve feet
- Replacement 12 Volt diaphragm pump for variety of makes and models
- Fiberglass-reinforced polypropylene pump manifold with ½” FNPT Port
- Corrosion resistant Viton valves and Santoprene diaphragm
- Ce approved
- Can be used for other fluid transfer applications
- Approved For use with Round-Up and other agricultural brand herbicides and insecticides
- 12V pump that can handle up to 7.0GPM & 60 psi
- 12 volt wire harness sold separately. Please read the user manual before use.
9.5Excellent
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3
VEVOR18% OffVEVOR Air Operated Double Diaphragm Pump, 44GPM, Max 115PSI Air Waste Oil Pneumatic Transfer Pump with 2 Extra Diaphragms, 1-1/2 inch Inlet & Outlet Aluminum Alloy Diaphragm Pump for Diesel Grease Oil
Main highlights- Solid & Leak-Proof Design: Our air-operated double diaphragm pump housing is crafted with aluminum alloy and secured with a full-bolted structure, promising an unwavering bond between components for top-notch sealing. Bid farewell to oil lubrication and fear of dry running, and our pump is designed for enduring performance and rigorous, long-term use. Get ready to experience a pump that's as tough as your demands!
- Premium PTFE Diaphragm: Our air operated diaphragm pump features state-of-the-art dual-layer PTFE diaphragms for exceptional corrosion resistance. These diaphragms excel in the harshest environments, handling corrosive fluids with unparalleled efficiency. Max. Flow Rate: 44 GPM. Max. Pressure: 115 PSI. Max. Head Lift: 226 ft/69 m. Ready to experience the difference? Let's power up your productivity!
- Low Noise Operation: Our air transfer pump comes with an advanced silencer that minimizes noise to the lowest possible level, not only enhances the comfort of your working environment but also significantly reduces vibration and noise impact on the equipment itself, extending its lifespan. The detachable design for effortless maintenance and cleaning reduces your upkeep costs. Enjoy a quieter and more efficient workspace!
- Fit for Multiple Fluids: Our waste oil pump is capable of processing a wide array of fluids from waste oil, alcohol, hydraulic oil, gasoline, diesel, and detergents to beverages. Its extensive applications span industries including petroleum, metallurgy, mining, coatings, printing, water treatment, and automotive. Whatever your industry, whatever your fluid, our diaphragm pump is engineered to handle it with unmatched efficiency and reliability.
- Exceptional Pneumatic Performance: Elevate your fluid handling with our air diaphragm pump! It boasts standard inlet/outlet dimensions of 1.5 inches and an air inlet size of FNPT 1/4 inch, designed to seamlessly integrate with your existing pipelines and fittings, enhancing its pneumatic performance. Embrace the power of professional pneumatic design in your operations today!
9.4Excellent
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4
PEAYLIAir Operated Double Diaphragm Pump QBY4-25L 1 inch Outlet 35 GPM Pneumatic Transfer Max 120 PSI Industrial Use Chemical Waste Oil Dual Dissepiment Nitrile Fluorine Rubber by Cast Iron Aluminum Alloy
Why we love it
Durable construction for long-lasting performance.
Efficient operation with minimal downtime.
Versatile use across multiple industries.
9.3Excellent
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5
FAHKNSAir Operated Double Diaphragm Pump 1-1/2 inch Inlet & Outlet, 44GPM, Max 115PSI Air Waste Oil Pneumatic Transfer Pump with 2 Extra Diaphragms, for laboratory dosing, diesel fuel transfer
Main highlights- WIDELY USED: Our waste oil pumps are capable of conveying a wide range of fluids and viscous liquids such as waste oil, alcohol, hydraulic oil, diesel fuel, detergents, slurry, lime slurry, sewage, antifreeze EB solvent-2-butoxyethanol, industrial paint DEF by urea CNC coolant, acetone, gear lubricants, gas and hydrogen sulfide residue, and so on. Widely used in metallurgy, petroleum, chemical, construction, water treatment, automotive, medical and other various industries
- MAIN FEATURES: conveying a variety of fluids, with the qualities of submersible pumps, self-priming pumps, impurity pumps and so on. No lubrication, can idle. Medium and pump parts are completely separated, conveying toxic or corrosive media will not leak, low energy consumption, small air consumption, modular design, low maintenance costs, long life, good heat resistance
- LOW NOISE OPERATION: Our air transfer pumps are equipped with advanced silencers, which can effectively reduce the noise generated when the air pump is working and the impact of the noise on the equipment itself, prolonging its service life, as well as improving the comfort of the working environment. The detachable design is easy to maintain and clean, which can reduce your maintenance cost. Enjoy a quieter and more efficient workspace!
- INDUSTRIAL QBK_40L: Material: aluminum alloy, stainless steel; diaphragm material: high quality imported PTFE double diaphragm; operation type: pneumatic; inlet/outlet size: 1-1/2 inches (38.1 mm); inlet size: NPT 1/2 inches (12.7 mm); flow rate: 44 GPM; max. head: 226.38 ft (69 m); suction: 16.4 feet (5 meters). Can be used for laboratory corrosive liquid transfer, except for ultra-high concentration corrosive liquids
- HIGH-QUALITY DOUBLE TEFLON DIAPHRAGM: comes with a set of replacement imported Teflon diaphragm, double diaphragm pumps are all made of high-quality Teflon material, durable, corrosion-resistant, long service life. With chemical stability, it can resist the erosion of strong acid, strong alkali and other corrosive substances, and can be widely used in various corrosive fluid transportation, except for ultra-high concentration corrosive fluids
- CUSTOMER SERVICE: Please note: After receiving the diaphragm pump, please check whether the fasteners are tightened, the transportation process may send loose, please tighten the screws first. After use if you find the pump has leakage or other problems, please be sure to contact us, we will help you to replace or solve. Maintenance: It is recommended that you regularly lubricate the moving pin group with lubricant and do regular maintenance, which can prolong the service life of the pump
9.1Excellent
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6
PEAYLIAir Operated Double Diaphragm Pump QBK-15 1/2 inch Outlet 12 GPM Pneumatic Transfer Max 115 PSI Industrial Use for Chemical Waste Oil Dual Diaphram PTFE Nitrile Rubber by Plastic and Stainless Steel
Main highlights- VARIOUS INDUSTRIES: Diaphragm pump can petroleum, metallurgy, mining, coating material, printing, paper making, water treatment, automotive and other chemical industries
- SAFETY: Air diaphragm pump bolted construction for leak-free fluid handling. ease of use/comfortability
- RELIABILITY: Diaphragm pump unbalanced air valve ensures no-stall operation.Air diaphragm pump good abrasion resistance, chemical resistance, and heat resistance
- INDUSTRIAL QBK-15: Material:Cast iron,aluminum alloy,Stainless steel.Inlet Port: 1/2 inch;Outlet Port: 1/2 inch ;Air inlet size: 1/4 inch;Gas Nozzle: 0.32 inch;Max Flow Rate: 2 m3/h (12 GPM);Suction: 16.4 ft (5M);Max Head: 226 ft (69 M);Max PSI: 115 psi
- EXCELLENT EFFICIENCY: Double diaphragm pump motor design delivers optimum air efficiency.Double Diaphragm:PTFE, Nitrile Rubber and Polychloroprene
9.0Excellent
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7
GCCSJGCCSJ Air Operated Double Diaphragm Pump 1 inch Inlet/Outlet Pneumatic Chemical QBY4-25L 31 GPM Dual Diaphram Polypropylene Nitrile Rubber by Stainless Steel Iron 115 PSI
Main highlights- WASTE OIL TRANSFER: Max grain diameter allowed to pass is 4mm.Suits for transfer waste oil and some liquid with particles.Max flow rate:7 m³/h.Suction: 23 ft. Head: 246 ft.Max pressure: 115 psi
- STAINLESS STEEL BODY : Air operated diaphragm pump body made of stainless steel, aluminum alloy and cast iron.Air diaphragm pump bolted construction for leak-free fluid handling
- PNEUMATIC DIAPHRAGM PUMP: Air inlet size:1/2 inch.Gas Nozzle:0.32 inch with silencer.Diaphragm pump unbalanced air valve prevents stall operation.Air diaphragm pump good abrasion resistance, chemical resistance, and heat resistance
- EXCELLENT PERFORMANCE: Double Diaphragm Pump features an externally serviceable air distribution system and all-bolted construction. Modular air valve is stall-free, this low pulsation air valve provides smooth and rapid changeover for increased efficiency and minimizes down time
- CUSTOMER SERVICE: Please note: After receiving the diaphragm pump, please check whether the fasteners are tightened, the transportation process may send loose, please tighten the screws first. After use if you find the pump has leakage or other problems, please be sure to contact us, we will help you to replace or solve. Maintenance: It is recommended that you regularly lubricate the moving pin group with lubricant and do regular maintenance, which can prolong the service life of the pump
- 1 INCH PORT: Double diaphragm pump with 1 inch inlet and 1 inch outlet.Exit pressure is 8 kgf/cm³
8.8Very Good
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8
CozyelCozyel Air-Operated Double Diaphragm Pump - 1 Inch Inlet & Outlet, Aluminum, 35 GPM Max 120PSI, QBY4-25L
Main highlights- [VERSATILE USE]--The diaphragm pump with convenient operating are widely used in various industries, such as petroleum, metallurgy, mining, coating material, printing, paper making, water treatment, automotive etc.
- [UNIQUE DESIGN]--Features an externally serviceable air distribution system and all-bolted construction. Modular air valve is stall-free, this low pulsation air valve provides smooth and rapid changeover for increased efficiency and minimizes down time.
- [Quality Performance]--Maximum Head: 275.59FT/84M, Max Temp : 150 ℉, Max Pressure: 120PSI. Top quality glyd ring, a double-acting seal that delivers better performance. 1/2 inch air inlet with NPT fitting uses standard shop air for easy operation.
- [MAIN PARAMETER]--Material: Aluminum; Diaphragm Material: Nitrile; Type: Double diaphragm; Operation Type: Air-operated; Inlet/Outlet Port Size/Standard 1 inch (25 mm); Air Inlet Size: NPT 1/2 inch (12.7 mm)
- [EXCELLENT CONSTRUCTION]--Rugged construction - resists corrosion for reliable performance and long life. Bolted construction is designed for leak-free fluid handling.
8.7Very Good
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9
SHURFLOShurflo 2088-313-145 Diaphragm Pump with Fin Cooled Motor (12VDC)
Main highlights- Product Number: 2088-313-145.
- Poly Housing 12 Volt DC.
- 3.6 GPM open flow, Viton valves, Santoprene diaphragm, 45 PSI Demand Switch 1/2" MSPT ports (1/2" - 14 National American Straight Pipe Thread, requires SHURflo swivel type fittings).
8.6Very Good
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10
MXBAOHENGMXBAOHENG Air-Operated Diaphragm Pump Pneumatic Double Diaphragm Pump 3/8" Inlet & Outlet Transfer Pump 1/4" Air Inlet for Chemical Industrial Use (18L/min)
Main highlights- This diaphragm pump has simple structure, few wearing parts, convenient installation and maintenance. The medium conveyed by the pump will not touch the moving parts such as the valve, linkage, etc., unlike other types of pumps due to the wear of rotors, pistons, gears, blades and other parts. Decrease performance gradually.
- Pneumatic diaphragm pumps have six advantages: reliable quality, long service life, low noise, low vibration, never crashing, and fine workmanship. They can pump flowing liquids and transport some difficult-to-flow media.
- NOTE: This diaphragm pump can be used to pump chemical liquids, and the diaphragm used is PTFE acid and alkali corrosion resistant diaphragm. But because the pump is aluminum alloy, so it is best not to pump strong acid and alkali substances that will react with aluminum alloy.
- NOTE: The pump can not be used when empty, there is no liquid inside for a long time when pumping will burst, such as the barrel inside the material is not available, empty, will lead to bursting; there is too much pressure, the diaphragm pump is the best air pressure is 4 kilograms, the maximum 6 kilograms, more than then the diaphragm pump will be damaged.
- It is easy to use, reliable in work, and only needs to open and close the gas valve. Even if the pump runs without medium for a long time due to unexpected circumstances or suddenly stops the pump, it will not be damaged. Once overloaded, the pump will automatically stop. Self-protection performance, when the load returns to normal, it can automatically start operation;
8.5Good
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