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Aluminium double-diaphragm pump with 1.5in ports and two spare PTFE diaphragms

VEVOR

VEVOR QBK-40L Air Diaphragm Pump 44GPM 115PSI 1.5in PTFE Aluminum 2 Diaphragms

SKU CH-GE9G-4BFRX

Air-operated double-diaphragm pump delivers 44 GPM at 115 PSI with PTFE diaphragms and 1.5 inch ports

  • TypeOther Appliances
  • Width17.32
  • Delivers up to 44 GPM flow rate for rapid fluid transfer
  • Handles demanding applications with 115 PSI maximum pressure capability
  • PTFE diaphragms resist corrosion for extended service life in harsh environments
  • Aluminum alloy body with full-bolted construction ensures leak-proof, durable operation
  • Includes two spare diaphragms to minimise downtime during maintenance

Pump Purpose

The VEVOR QBK-40L is an air-operated double diaphragm pump built for transferring fluids such as diesel, grease, oil and waste oil. Its aluminum alloy body and dual PTFE diaphragms suit industrial and workshop users who need a self-priming, seal-less design that can run dry without damage. Buyers needing electric drive or submersible operation should look elsewhere.

Sustained Operation

The pump delivers a maximum flow of 44 GPM at up to 115 PSI, with a head lift of 226 ft and suction lift of 16.4 ft. The PTFE diaphragms resist corrosion from harsh chemicals, while the bolted aluminum housing maintains sealing under continuous cycling. Solid particles up to 0.2 in pass through without clogging, supporting steady throughput in dirty-fluid applications.

Installation Notes

The unit weighs 25.4 lbs and measures 17.32 in wide, with 1.5 in inlet and outlet ports plus a 1/2 in FNPT air inlet. Two spare diaphragms and a manual are included. Ensure compressed-air supply matches the pressure rating and that piping accommodates the port size; mismatched air pressure or undersized lines are the most common setup issues.

Highlights

  • Delivers up to 44 GPM flow rate for rapid fluid transfer
  • Handles demanding applications with 115 PSI maximum pressure capability
  • PTFE diaphragms resist corrosion for extended service life in harsh environments
  • Aluminum alloy body with full-bolted construction ensures leak-proof, durable operation
  • Includes two spare diaphragms to minimise downtime during maintenance

Specifications

TypeOther Appliances
Width17.32

Questions about this item

How much compressed-air pressure does the QBK-40L need to reach its 115 PSI fluid rating?

The pump produces up to 115 PSI fluid pressure when driven by a compressed-air supply; the air inlet accepts FNPT 1/2 in connections.

What hose or pipe sizes must I already have to connect the 1.5 in inlet and outlet?

The pump uses 1.5 in inlet and outlet ports; matching hoses, fittings or piping in that size are required for installation.

Will the PTFE diaphragms handle the same chemicals as the Buna diaphragms on my older pump?

PTFE diaphragms resist a wider range of corrosive fluids than Buna; they also tolerate dry running without damage.

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