ARO air-operated flat-valve diaphragm pumps offer efficient flow rates of up to 651 l/min. This 2” flap valve pump is designed with a top inlet. It is ideal for abrasive products containing large-diameter particles using gravity. Conventional pumps with a bottom inlet have to fight gravity, which causes particles to deposit and clog the pump.
ARO pumps with flap valves are designed to handle stringy, fibrous materials, bulky solids (suspended or not), abrasive products, slurries and other applications less suited to pumps with ball valves.
On the other hand, the ARO stall-free differential valve prevents the valve from being positioned centrally, thus stopping the pump.
Pumps with flap valves are useful for feeding filter presses, waste treatment, dewatering, transferring filled materials and a variety of other demanding applications.
Able to handle 2" semi-solids and 3/4' solid materials.
Available in three different construction materials including Aluminum, Cast Iron or Stainless Steel with the option of Plated Steel or Stainless Steel hardware
Efficiency - Simul-Shift™ valve provides ultra-positive, reliable shift signal
Reliability - ARO's patented 'Unbalanced' air valve ensures no-stall operation
Accessories
66312 Air Line Connection Kit: contains Piggyback Filter / Regulator, pipe nipple & 5’ section of hose
67263 Continuous-Duty Muffler: Recommended for continuous-duty and high-flow applications. Features large expansion chamber, permitting cold exhaust air to exit pump.
94117 Air Motor Muffler
637369 Air Section Service Kit (for PF20R and PF20Y)
637421 Air Section Service Kit (for PF20A and PF20S)
