Wilden 1.5-inch, air-operated, double-diaphragm (AODD) plastic pumps in the P4 and PX4 Original Series install fast and easily and provide a rugged, reliable design in a robust disposition for a wide range of demanding process applications. P4 flow rate to 206 GPM with maximum operating pressure at 125 PSI. Choose the elastomer based on its temperature limit:
Buna 10 - 180 degrees F
Neoprene 0 - 200
PTFE 40 - 300
Wil-Flex minus 40 - 225