FTI 2”/51 mm Non-Metallic Air Operated Double Diaphragm Pump

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FTI 2”/51 mm Non-Metallic Air Operated Double Diaphragm Pump

The stall-free air valve on FTI Model FT20 pumps is distinctive, easy to use, durable, and reliable, and it eliminates the need for a mechanically operated or separate pilot valve. Fluid handling is leak-free due to bolted construction. Pumps with wetted materials made of polypropylene or PVDF are available. For dependable performance in a wide range of applications, diaphragms, balls, and seats are offered in a variety of materials. Products from FTI have fewer parts, a simpler design, and are less likely to malfunction.

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  • Specifications
  • Capabilities
  • Construction
  • Dimensions & Weights
  • Applications
  • Performance Curve

Suction & Discharge Size:

2” x 2”

Porting Location:


Connection Types:


Air Inlet & Air Exhaust Size:

¾” FNPT x ¾” FNPT

Maximum Flow Rate:

154 gpm (583 lpm)

Maximum Air Supply Pressure:

100 psi (6.9 bar)

Displacement Per Stroke:

0.31 gal (1.2 lit)

Minimum Air Inlet Pressure:

10 psig (0.7 bar)

Maximum Particle Size:

0.35” (8.9 mm)

Sound Pressure:

77 dB(A)

Operating Temperature:

Determined by elastomers

Wetted Materials:

Polypropylene, PVDF

Diaphragm Materials:

Neoprene, Santoprene™, FKM, EPDM, PTFE, Buna, Hytrel®, polyurethane

Air Valve:

GFRPP, Aluminum

Ball Materials:

Neoprene, Santoprene™, FKM, EPDM, PTFE, Buna

Seat Materials:

Polypropylene, PVDF

O-ring Materials

Buna, FKM, Santoprene™, polyurethane, FEP/FKM

Maximum Height:

31-11/16” (805 mm)

Maximum Width:

23-19/32” (600 mm)

Maximum Depth:

12-27/32” (326 mm)

Weight – Polypropylene:

67.0 lb (30.4 kg)

Weight – PVDF:

97.5 lb (44.2 kg)

  • Acids & Bases
  • Plating Solutions
  • Water & Wastewater
  • Paints, Inks, Solvents
  • Ceramic Slip & Glaze
  • Lubricants & Oils

Performance Curve

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