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Double diaphragm pumps that are air-powered may transport and dose a range of fluids. Excellent for solvents, including most ketones, acetates, aldehydes, aromatic, and chlorinated hydrocarbons, as well as solvent- and water-based gravure, flexo, and paint inks. For industrial processes with lower flow rates and OEM applications. For finer flow adjustment using regulating air pressure, an unbalanced spool valve air motor needs lower start-up pressure. Materials that are pump wetted can be used in corrosive situations and are compatible with the most hostile fluids. Polypropylene is used to make the air motor's air chamber covers and directional air valve. For use in potentially explosive environments (Ex II2 GD IIB/IIC 95 °C), this model is a fully groundable ATEX-certified pump.
Fluid inlet |
1/2" BSPP (F) |
Fluids |
Solvent, Paint, Ink, Varnish |
Certification |
ATEX |
Solids in suspension maximum size |
3 mm (0.12 ") |
Pressure ratio |
1:1 |
Wetted materials |
Stainless steel (AISI 316), PTFE, Polypropylene, Conductive acetal, Stainless steel |
Air pressure operating range |
1.5 - 7 bar (20 - 100 psi) |
Delivery per cycle |
0.2 l (0.05 gal) |
Air inlet |
3/8" NPSM (F) |
Maximum dry suction head |
6 m (20 ft) |
Weight |
2.2 kg (4.85 lb) |
Maximum free flow delivery |
50 l/min (14 gal/min) |
Pump size |
1/2" |
Maximum wet suction head |
8 m (26 ft) |
Fluid outlet |
1/2" BSPP (F) |
Product code |
Diaphragms |
Balls |
Seats |
Other wetted materials |
Air motor |
Fluid Path |
DC50PPSTSTTBAS |
PTFE |
PTFE |
Stainless steel (AISI 316) |
Stainless steel |
Polypropylene |
Polypropylene |
DC50PDSTSTTBAS |
PTFE |
PTFE |
Stainless steel (AISI 316) |
Stainless steel |
Polypropylene |
Conductive acetal |
DC50PPSESTMBAS |
Santoprene |
PTFE |
Stainless steel (AISI 316) |
Stainless steel |
Polypropylene |
Polypropylene |
DC50PPYTWTTBAS |
PTFE |
PTFE |
PVDF |
Hastelloy C |
Polypropylene |
Polypropylene |