The Best Diaphragm Pumps

Looking for the best Diaphragm Pumps?

Discover now our comparison of the best Diaphragm Pumps. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best Diaphragm Pumps are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Diaphragm Pumps in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.

SaleNo. 1

VEVOR 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

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!
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!
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.

No. 2

Air 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

【INDUSTRIAL QBY4-25L】Material:aluminum; Dissepiment Material:Nitrile Bubber,Fluorine Rubber,Chloroprene Rubber; Type: double diaphragm; Operation Type: Air-operated; Inlet/Outlet Port Size: 1 inch (25mm); Air Inlet Size: NPT 1/2 inch (12.7mm); Flow Rate: 35 GPM; Max Head Lift: 275 ft(84 M); Suction: 23 ft(7M).Can not use for corrosive liquid.
【MAXIMUM HEAD】Air-Operated Double Diaphragm Pump have top quality, a double-acting seal that delivers better performance. 1/2 inch air inlet with NPT fitting uses standard shop air for easy operation.275.59FT/84M, Max Temp : 150 ℉, Max Pressure: 120 PSI.
【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.
【RUGGED CONSTRUCTION】 Diaphragm Pump resists corrosion for reliable performance and long life. Bolted construction is designed for leak-free fluid handling.
【WIDELY USE】The diaphragm pump with convenient operating are widely used in various industries, such as petroleum, metallurgy, mining, coating material, paint, printing, paper making, water treatment, automotive etc.

No. 3

Air 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

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
RELIABILITY: Diaphragm pump unbalanced air valve ensures no-stall operation.Air diaphragm pump good abrasion resistance, chemical resistance, and heat resistance
SAFETY: Air diaphragm pump bolted construction for leak-free fluid handling. ease of use/comfortability
VARIOUS INDUSTRIES: Diaphragm pump can petroleum, metallurgy, mining, coating material, printing, paper making, water treatment, automotive and other chemical industries

SaleNo. 4

Chapin International 6-9206 12V 1.0 GPM Standard Diaphragm Pump, Black

SELF-PRIMING PUMP: liquid stays inside the pump body on this diaphragm pump, combating air pockets that can limit operation, allowing you to run the pump dry without damage and operate efficiently
DIAPHRAGM PUMP: no shaft or seals to replace with a diaphragm pump so it’s designed to last
ENGINEERED IN THE USA: designed and engineered in the USA with US-based customer service and technical support; based in Batavia, NY and backed a 2-year limited warranty
CHEMICAL-RESISTANT ELASTOMER SEALS: chemical-resistant seals stand up to harsher chemicals and tough tasks ranging from gardens and acreage to cleaning and industrial work
SLIDE-LOCK HOSE CONNECTIONS: switch the pump quickly when a replacement is needed with slide-lock hose connections and in-line fuse protection; keep a spare on hand to swap out on the go
UNIVERSAL MOUNTING BASE: pump fits most ATV sprayers and connections with a universal mounting base

No. 5

GCCSJ 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

1 INCH PORT: Double diaphragm pump with 1 inch inlet and 1 inch outlet.Exit pressure is 8 kgf/cm³
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
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
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
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

SaleNo. 6

Cozyel 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

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.
Good abrasion resistance and heat resistance.
Rugged construction - resists corrosion for reliable performance and long life.Bolted construction is designed for leak-free fluid handling.
Easy access to ball checks and fluid caps for maintenance and repairs.

No. 7

Air 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

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
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!
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
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

No. 8

KENCIT T33 Automatic On-Demand Diaphragm Pump 115Vac, 4.0GPM, 45PSI, Industrial Water Pressure Pump for Kitchen, Bathroom, RV, Marine Yacht, Caravan, Garden

Built-in pressure switch automatically starts and stops pump instantaneously when discharge valve opens and closes.
Can run dry for extended periods of time without damage and handle liquids up to 140° F (60° C).
Ball bearing drive throughout pump and motor assures longer pump life. Automatic control switch of the pressure inside and motor is thermally protected.
Excellent self-priming capability up to 9.8 feet suction lift. Powerful, permanent magnet motor with low current draw and long life brushes.
This diaphragm water pump install easily and great use in garden, RV, yacht agricultural irrigation spraying and kitchen. Also the best partner of food trunk and fish tank.

No. 9

Pneumatic double diaphragm pump, 1-1/2 inch inlet and outlet DN40, polypropylene body, 35GPM and Max 120pSI, chemical pump bleaching oil transfer

APPLICATIONS: Conveying fluid and viscous liquids, such as waste oil, ethanol, gasoline, engine oil, diesel oil, mud, lime slurry, sewage, cement, antifreeze EB solvent-2-butoxyethanol, industrial coating DEF is purified from urea CNC coolant, acetone, gear lubricant, isopropanol. Widely used in petroleum, metallurgy, mining, paint, printing, water treatment, automotive and other industries.
Premium Double Teflon Diaphragms: with an Extra Set of Diaphragms Our air-operated double diaphragm pump adopts Teflon diaphragms, durable, corrosion-proof, and long-lasting. Max. Temperature: 150 ℉/66 ℃; Max. Pressure: 120 psi; Max. Flow Rate：35 GPM; Max Head Lift：226.4 ft/69 m.
MAIN FEATURES: no lubrication, medium and pump parts completely separated, delivery toxic, medium will not corrode leakage, low energy consumption, small gas consumption, Modular design, low maintenance costs, long life, good heat resistance.
ADVANTAGES: no spark, no liquid suction will not damage the pump, flow and head can be adjusted by valve switch size, suction can be adjusted by pressure, can be immersed in the medium work, high viscosity and low viscosity liquids can be extracted.
HOW IT WORKS: pneumatic diaphragm pump to Compressed air power, diaphragm installed in the pump's two symmetrical chambers, the central connecting rod will be integrated as a whole together. The Compressed air enters the valve through the inlet of the pump and is directed through the valve body into one chamber to facilitate movement of the diaphragm while Compressed air gas from the other chamber.

No. 10

Air-Operated Double Diaphragm Pump, 1/2 in Inlet & Outlet, QBK-15, 12 GPM & Max 120PSI, PTFE Diaphragm Pneumatic Transfer Pump for Petroleum, Diesel, Grease & Low Viscosity Fluids

WIDE COMPATIBILITY: Material: cast iron, aluminum alloy, stainless steel. Inlet/Outlet: 1/2 inch; Inlet size: 1/4 inch; Gas nozzle: 0.32 inch; Maximum flow rate flow: 2 m3/h (12 GPM); Suction: 16.4 ft (5M); Maximum head: 226 ft (69 M); Maximum PSI: 115 psi
EXCELLENT EFFICIENCY:Double diaphragm pump motor design delivers optimum air efficiency.Double Diaphragm:PTFE, Nitrile Rubber and Polychloroprene
RELIABILITY: Diaphragm pump unbalanced air valve ensures no-stall operation.Air diaphragm pump good abrasion resistance, chemical resistance, and heat resistance
STRONG CONSTRUCTION : The air operated diaphragm pump body is made of plastic, cast iron, stainless steel and aluminum alloy for corrosion resistance and long service life
WIDE COMPATIBILITY: The diaphragm pump can be used in petroleum, metallurgy, mining, paint, printing, paper making, water treatment, automotive and other chemical industries
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

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Last update on 2025-07-04 / Affiliate links / Images from Amazon Product Advertising API

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