ALFACOM ENGINEERING LTD.
ALFAMATIC PS Stainless Steel Steam Solenoid Valves
ALFAMATIC PS two-way solenoid valves have SS304 stainless steel bodies, PTFE seals and normally closed, pilot-operated action. They are intended for suitable steam and high-temperature liquid duties within the selected model's operating limits.
ALFAMATIC PS Stainless Steel Steam Solenoid Valves · ALFACOM catalogue
Pilot Operation and Pressure Differential
PS valves require a minimum differential pressure between inlet and outlet for pilot operation. A high inlet pressure alone does not establish suitability if the outlet pressure is close to it.
- 1/4" and 3/8": minimum differential pressure 0.1 bar.
- 1/2" to 2": minimum differential pressure 0.4 bar, as listed in the model selection table.
The valve is normally closed: it closes when the coil is de-energized, subject to the installation and operating requirements of the selected model.
Technical Selection Data
- Body: stainless steel SS304; seal: PTFE.
- Listed media: steam and high-temperature liquids, subject to compatibility.
- Threaded connections: 1/4" to 2", G or NPT according to the order code.
- Service temperature range: 0°C to 180°C.
- Listed maximum working pressure: 16 bar for 1/4" to 1"; 12 bar for 1 1/4" to 2".
- Coil voltage options: 12 VDC, 24 VDC, 24 VAC, 110 VAC and 220–240 VAC, with a compatible operator.
Confirm suitability at the actual medium, temperature and pressure differential. The listed maxima must not be treated as independent guarantees for every operating combination.
Selection and Coil Matching
Provide the medium, inlet and outlet pressures, operating temperature, required flow, connection size and thread, electrical supply and quantity. Check the coil bore, valve operator, voltage and AC/DC supply before selecting a replacement coil.
ALFACOM can assist with valve and coil selection and confirm availability and lead time for the requested model.
Frequently Asked Questions
Can PS operate with no pressure differential?
No. The pilot-operated PS models require the minimum differential pressure specified for their size.
Does a stainless steel body guarantee suitability for every fluid?
No. Check compatibility of the body, seal and other wetted components with the medium and process conditions.
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.