Flojet Triplex Series Industrial Diaphragm Pump (2 GPM, 60 PSI, Self-Priming)

The Flojet Triplex Series T20FF-318S-1P is a reliable, industrial-grade diaphragm pump built for heavy-duty fluid transfer and spray applications. As the direct upgrade to Flojet's legacy Duplex Series, this three-chamber pump delivers a 2.0 GPM open flow rate and handles maximum operating pressures up to 60 PSI. It runs on a standard 115 VAC nominal voltage, powered by a permanent magnet rectified AC motor. You'll get consistent, efficient transfer performance without the excessive vibration typical of industrial pumps, thanks to the integrated noise-dampening baseplate.

One of the biggest practical advantages of the Triplex Series is its resilience. It's fully run-dry capable, meaning an empty tank won't immediately burn out your equipment. It also self-primes up to 8 vertical feet, giving you flexibility in how and where you mount the pump relative to your fluid source. The motor is equipped with built-in thermal protection to prevent overheating during extended runs, and the long-life co-injection mold diaphragm ensures reliable operation over time. And because it features an internal bypass, the pump manages fluctuating line pressures smoothly without aggressive motor cycling.

This pump is constructed to handle demanding industrial environments. The wetted parts feature a robust Santoprene diaphragm and EPDM valves to manage fluids safely within a temperature range of 40ºF to 140ºF. The housing itself combines a glass-filled polypropylene upper housing with a cast aluminum lower housing and motor casing. Hooking it up to your system is straightforward with the standard 3/8" NPTF ports.

Technical Specifications

Manufacturer Part #

T20FF-318S-1P

Nominal Voltage

115 VAC

Open Flowrate

2.0 GPM

Max Operating Pressure

60 PSI

Internal Bypass

Yes

Ports

3/8" NPTF

Self-Priming

Up to 8 ft.

Fluid Temp Range

40ºF to 140ºF

Diaphragm Material

Santoprene

Valve Material

EPDM

Highlights

• Delivers 2.0 GPM open flow and handles up to 60 PSI maximum operating pressure.
• Self-primes up to 8 vertical feet for flexible mounting configurations.
• Run-dry capable design prevents damage when fluid reservoirs run empty.
• Built with standard 3/8" NPTF ports for straightforward integration into existing lines.
• Features a noise-dampening baseplate and thermally protected permanent magnet motor.
• Equipped with an internal bypass to handle fluctuating system demands smoothly.

Specifications:

• Nominal Voltage: 115 VAC
• Open Flowrate: 2 GPM
• Max Operating Pressure: 60 PSI
• Internal Bypass: Yes
• Fluid Temp Range: 40° F - 140° F
• Diaphragm: Santoprene
• Valves: EPDM
• Power Cord: Not Included - short three-wire service cord, does not include a plug
• Flojet Part #: T20FF-318S-1P

Specifications