Diaphragm Acid Pumps | McMaster-Carr

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	Pump Type Pump Type

Double Diaphragm

Diaphragm

	For Use With For Use With

	Power Source Power Source

Electric

Air

	Maximum Flow Rate Maximum Flow Rate

	Housing Material Housing Material

Plastic

Stainless Steel

Aluminum

	Priming Type Priming Type

Gravity Fed

Self-Priming

Initial Fill

	Discharge Pipe Size Discharge Pipe Size

	Intake Pipe Size Intake Pipe Size

	Pump Style Pump Style

Metering

Transfer

	Maximum Temperature Maximum Temperature

	Maximum Feet of Head Maximum Feet of Head

	Intake Connection Style Intake Connection Style

	Diaphragm Material Diaphragm Material

Rubber

Plastic

Polyethylene Rubber/PTFE
Plastic/Brass

Plastic/Rubber

	Discharge Connection Style Discharge Connection Style

	Maximum Pressure Maximum Pressure

	Maximum Viscosity Maximum Viscosity

	Runs Dry Runs Dry

Yes

	Maximum Discharge Pressure Maximum Discharge Pressure

	Intake Connection Type Intake Connection Type

Pipe

Tube

	Voltage Voltage

120V AC

12V DC

24V DC

	Overall Length Overall Length

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

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155 Products

Air-Powered Transfer Pumps

Compact Air-Powered Transfer Pumps

Small enough to fit in the palm of your hand, these pumps transfer water, detergents, and chemicals.

PTFE Air-Powered Transfer Pumps for Harsh Chemicals

With all PTFE wetted parts, these pumps offer the best chemical resistance of all our air-powered transfer pumps and can handle solvents and petroleum-based fluids that PVDF pumps can’t.

Polypropylene Air-Powered
Transfer Pumps for Chemicals

Resistant to chemicals such as ammonia, detergents, and cleaning fluids, these pumps have a Santoprene diaphragm and polypropylene housing. Pumps can be used to move thick sludges and slurries

Plastic Air-Powered Transfer Pumps for Water

These pumps have a chemical-resistant polypropylene housing for use in harsh environments.

Plastic Air-Powered Transfer Pumps for Oil

A Buna-N diaphragm stands up to lubricating oil such as hydraulic and motor oil. These pumps are designed to handle thick sludges and slurries.

316 Stainless Steel Air-Powered Transfer Pumps
for Chemicals, Fuel, and Flammable Liquids

With a 316 stainless steel housing and a PTFE diaphragm, these pumps resist a variety of acids, alkalies, and flammable liquids such as phosphoric acid, acetone, and methyl ethyl ketone (MEK). They're designed for moving large volumes of thick sludges and slurries in demanding environments.

Aluminum Air-Powered Transfer
Pumps for Oil, Chemicals, and Fuel

These pumps have a PTFE diaphragm compatible with oil, fuel, and chemicals such as mineral spirits, methyl ethyl ketone (MEK), and xylene. They have a rugged aluminum housing for moving large volumes of thick sludges and slurries in demanding environments.

316 Stainless Steel Air-Powered Transfer Pumps
for Oil, Chemicals, Fuel, and Large Solids

With a 316 stainless steel housing and a fluoroelastomer diaphragm, these pumps resist a variety of harsh acids and alkalies, such as phosphoric acid, nitric acid, and sulfuric acid. They have large internal pathways and check valves with flaps to accommodate thick sewage, abrasive slurries, and industrial waste with large solids that would damage standard air-powered transfer pumps.

Smooth-Flow Air-Powered Transfer Pumps

Also known as sprayer pumps, these provide a smooth, uniform flow for agricultural spraying, soap dispensing, and chemical transferring.

Plastic Air-Powered Transfer Pumps
for Fuel and Flammable Liquids

These pumps can be grounded to dissipate static electricity and are rated for use with flammable liquids such as gasoline, kerosene, isopropyl alcohol, and mineral spirits.

Air-Powered Transfer Pumps for Food and Beverage

Made of FDA listed materials for use with food and beverage, these pumps have a sanitary quick-clamp fluid connection for easy cleaning. They are commonly used to move sauces, concentrates, and other thick liquids with solids.

Metering Pumps

High-Accuracy Metering Pumps for Chemicals

These pumps meter a consistent amount of liquid within ±2% of the maximum flow.

High-Pressure Metering Pumps
for Chemicals with Locking Lever

An adjustment dial with a locking lever allows for easy flow control. Also known as diaphragm metering pumps, these can be used with pressures up to four times higher than standard pumps for chemicals.

Remote-Adjustment High-Accuracy
Metering Pumps for Chemicals

Automatically control output from a distance using 4‐20 mA or external-pulse signals. These pumps meter a consistent amount of liquid within ±2% of the maximum flow.

Extended-Life High-Accuracy
Metering Pumps for Chemicals

A 316 stainless steel housing provides corrosion resistance for a long life in harsh environments. These pumps meter a consistent amount of liquid within ±2% of the maximum flow.

Miniature Metering Pumps for Chemicals

With a footprint that's only a few inches in any direction, these pumps fit into compact systems to dispense small amounts of acids, cleaning fluids, and other chemicals. They're often used in sterilization, photochemical, and water treatment systems.

Metering Pumps for Coolants and Oils

Use these pumps for high-pressure output of antifreeze, hydraulic oil, and motor oil.