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Walchem
Walchem EWN Series Metering Pumps
Quote on request
No online payment · add lines to RFQ BOM
Walchem EWN-Y: solenoid diaphragm; to 360 SPM; dual check valves; tube/NPT. RFQ.
Download datasheet PDF
RFQ cart holds BOM lines only. Submit for engineering quote.
Key parameters
Type
Solenoid diaphragm metering pumps (EWN-Y series)
Drive
B ~20 W / C ~24 W average power classes
Diaphragm
Effective diaphragm diameters 8–35 mm (09–36 codes)
Speed
Up to 360 SPM with guided diaphragm
Valves
Dual check valve assemblies; precision ball guides
Connections
Removable tubing insert or NPT threaded insert
Fits solenoid chemical metering where you need a Walchem EWN-Y Series pump. Solenoid diaphragm metering family with drive classes about 20–24 W average, effective diaphragm diameters 8–35 mm, speeds to 360 SPM, dual check valve assemblies and removable tubing or NPT insert connections.
Key advantages
- Type — Solenoid diaphragm (EWN-Y)
- Speed — Up to 360 SPM
- Diaphragm — 8–35 mm effective diameters
- Valves — Dual check; precision ball guides
- Connections — Tubing insert or NPT
Typical applications
- Water treatment dosing.
- Cooling chemical feed.
- OEM solenoid metering.
Selection guide
- Drive B vs C
- Diaphragm code
- Tube vs NPT
Common mistakes
- Wrong diaphragm size.
- Ignoring valve materials.
- Stroke rate vs capacity.
When to RFQ / what to tell us
- Drive/size/connection.
- Quantity, ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 46822 |
| Brand | Walchem |
| Model | EWN Series Metering Pumps |
| Product type | Metering Pump |
| Type | Solenoid diaphragm metering pumps (EWN-Y series) |
| Drive | B ~20 W / C ~24 W average power classes |
| Diaphragm | Effective diaphragm diameters 8–35 mm (09–36 codes) |
| Speed | Up to 360 SPM with guided diaphragm |
| Valves | Dual check valve assemblies; precision ball guides |
| Connections | Removable tubing insert or NPT threaded insert |
Documents
FAQ
Q: Max SPM? A: 360.
Q: Connections? A: Tubing insert or NPT.
Q: What should I send for a quote? A: Drive/size/connection, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Type | Solenoid diaphragm metering pumps (EWN-Y series) |
| Drive | B ~20 W / C ~24 W average power classes |
| Diaphragm | Effective diaphragm diameters 8–35 mm (09–36 codes) |
| Speed | Up to 360 SPM with guided diaphragm |
| Valves | Dual check valve assemblies; precision ball guides |
| Connections | Removable tubing insert or NPT threaded insert |
| Compression | High compression ratio for off-gassing chemicals (e.g. NaOCl) |
| Options | High compression + ADV; high-pressure 250/290 PSI versions |
| Controller | Y standard controller function code |
| Power Codes | 115 V US / 230 V US plug options |