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Double diaphragm air-operated pumps for a range of fluid distribution tasks, including dosing, spraying, transferring, evacuating, and evacuation. Suitable for common applications with moderate flow rates. For the most demanding applications, very durable metal pumps are manufactured. In potentially explosive environments (Ex II2 GD IIB/IIC 95 °C), this model of pump is fully groundable and ATEX certified. Stainless steel and aluminum-friendly chemicals work well with this pump. Paint, inks, and varnishes that use solvents include those based on solvents (ketones, acetates, and aldehydes, as well as aliphatic and aromatic hydrocarbons).
Fluid inlet |
1 1/2" BSP (F) / DIN2576 PN-10 DN40 |
Wetted materials |
Stainless steel (AISI 316), PTFE, Stainless steel, Aluminium |
Air inlet |
1/2" NPSM (F) |
Fluids |
Chemicals, Ink, Solvent, Paint, Varnish |
Certification |
ATEX |
Air pressure operating range |
1.5 - 8 bar (20 - 120 psi) |
Pump size |
1 1/2" |
Pressure ratio |
1:1 |
Solids in suspension maximum size |
6 mm (0.18 ") |
Maximum dry suction head |
5 m (16 ft) |
Maximum wet suction head |
8 m (26 ft) |
Fluid outlet |
1 1/2" BSP (F) / DIN2576 PN-10 DN40 |
Weight |
20 kg (45 lb) |
Maximum free flow delivery |
250 l/min (66 gal/min) |
Delivery per cycle |
1.2 l (0.32 gal) |
Product code |
Diaphragms |
Balls |
Seats |
Other wetted materials |
Air motor |
Fluid Path |
DF250AASVSTHBAS |
Hytrel |
PTFE |
Stainless steel (AISI 316) |
Stainless steel |
Aluminium |
Aluminium |
DF250AASNSNNBAS |
NBR |
NBR |
Stainless steel (AISI 316) |
Stainless steel |
Aluminium |
Aluminium |
DF250AASTSSTBAS |
PTFE |
Stainless steel (AISI 316) |
Stainless steel (AISI 316) |
Stainless steel |
Aluminium |
Aluminium |
DF250AASTSTTBAS |
PTFE |
PTFE |
Stainless steel (AISI 316) |
Stainless steel |
Aluminium |
Aluminium |
DF250AASESTMBAS |
Santoprene |
PTFE |
Stainless steel (AISI 316) |
Stainless steel |
Aluminium |
Aluminium |