2”/51 mm Non-Metallic Air Operated Double Diaphragm Pump
FTI Air Model FT20 pumps features a unique stall free air valve that is simple, rugged and reliable and requires no separate pilot valve or a mechanically operated pilot valve. Bolted construction provides leak-free fluid handling. Pumps are available with polypropylene or PVDF wetted materials. Diaphragms, balls and seats are available in a wide range of materials to provide reliable operation in a wide variety of applications. FTI Air products have fewer parts, simpler design and are less prone to failure.
| Specifications | |
| Suction & Discharge Size: | 2” x 2” |
| Porting Location: | End |
| Connection Types: | ANSI/DIN/ISO flange |
| Air Inlet & Air Exhaust Size: | ¾” FNPT x ¾” FNPT |
| Capabilities | |
| 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 |
| Construction | |
| 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 |
| Dimensions & Weights | |
| 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) |




Applications
- Acids & Bases
- Plating Solutions
- Water & Wastewater
- Paints, Inks, Solvents
- Ceramic Slip & Glaze
- Lubricants & Oils
FT20 Plastic Manual PDF »
FT20 Plastic Technical Flyer PDF »
AODD Chemical Resistance Guide PDF »
Viscosity Chart »
Temperature Guide »
FTI Air Brochure PDF »