Walchem EWN-R Diaphragm Metering Pump (EWN-R)

The Walchem EWN-R series is now obsolete and the replacement series is the EWP-R pump. For reference, the obsolete EWN-R specifications were:

• Series: EWN-R
• Max Output: 0.2 - 6.7 GPH, depending on model
• Max Pressure: 30 - 290 PSI, depending on model
• Pump Head: PVC, GFRPP, PVDF or 316SS, depending on model
• Valve Seats: FKM, EPDM, PCTFE or 316SS, depending on model
• O-Rings: FKM, EPDM, PTFE or AFLAS, depending on model
• Valve Balls: Ceramic, Hastelloy or PTFE, depending on model
• Diaphragm: PTFE (+ EPDM Backer)
• Gaskets: PTFE
• Options: High Compression, High Pressure, Auto Degassing or Multi-Function Valve (MFV)
• Electrical: 115V or 230V US Plug, depending on model
• Control Module: Manual Control, Pulse & Analog Input, Stop/Pre-Stop Input
• Max Strokes per Minute: 180 - 360, depending on model
• Average Power: 20 or 24 Watts, depending on model
• Max Current: 0.8 or 1.2 Amp, depending on model
• Alternate Number: EWNR

Go to our EWP-R page to select a new replacement pump.