ALFACOM ENGINEERING LTD.
ALFAMATIC ZW Brass Solenoid Valves
ALFAMATIC ZW two-way brass solenoid valves use semi-direct operation with FKM seals. Normally closed and normally open versions serve suitable water, air, liquid and light-oil applications, subject to media compatibility.
ALFAMATIC ZW Brass Solenoid Valves · ALFACOM catalogue
Operating Configurations
Normally closed (N.C.): the valve is closed when the coil is de-energized. The catalogue covers threaded sizes from 3/8" to 2".
Normally open (N.O.): the valve is open when the coil is de-energized. The listed range is 3/8" to 1".
Both configurations operate without a minimum pressure differential within the ranges specified in the technical catalogue. Select the required de-energized position before choosing a model.
Technical Selection Data
- Body: brass; seal: FKM.
- Media: compatible water, air, liquids and light oil with viscosity up to 20 cSt.
- FKM service temperature: -10°C to 120°C, subject to application compatibility.
- ZW N.C.: 0–10 bar with AC coils; with DC coils, 0–8 bar through 1" and 0–6 bar for 1 1/4" to 2".
- ZW N.O.: 0–6 bar for the listed AC and DC versions.
- Thread options: G or NPT, as ordered.
- Coil options: 12 VDC, 24 VDC, 24 VAC, 110 VAC and 220–240 VAC, with a compatible valve operator.
Pressure, temperature, medium and coil requirements must be checked together for the selected model. Use the catalogue selection table for model codes, orifices, Cv values and dimensions.
Selection and Replacement
Provide the medium, inlet and outlet pressures, temperature, required flow, connection size and thread, normally closed or normally open function, supply voltage and quantity. For replacement, include a photograph of the nameplate and coil.
Frequently Asked Questions
Can every ZW valve operate at 10 bar?
No. The permitted pressure depends on the configuration, size and AC/DC coil type. Check the applicable row in the catalogue.
Is ZW the steam-service model?
The ZW catalogue lists water, air, liquids and light oil. For steam duties, review the PS series and confirm its pressure, temperature and pilot-operation requirements.
Technical Catalogue and Coil Guide
View model-specific operating data, dimensions and coil-selection guidance in the ALFAMATIC ZW and PS catalogue.
Discuss Your Application
Send your requirements or a photo of the existing equipment for technical assistance and a quotation.
Availability and lead time are confirmed for the requested model and quantity.