Spirax Sarco SRV66 Sanitary Pressure Reducing Valve for Clean Steam Systems
Overview
The Spirax Sarco SRV66 is a self-draining 316L stainless steel sanitary pressure reducing valve for clean steam, water and inert industrial gases. Pressure reduction close to the point of use helps hygienic systems combine the distribution advantages of higher upstream pressure with the process benefits of lower, more stable downstream pressure. In steam service, that can support more consistent steam quality, reduce flash steam effects in condensate discharge and help match downstream pressure to the real needs of the equipment. The source documentation highlights ISO 2852 sanitary clamp connections, CIP suitability and pressure reduction without an external sensing line, which keeps the station more compact and easier to integrate into sanitary pipework. SRV66 is therefore well suited to clean steam and clean-fluid duties that need self-draining hygienic design together with dependable local pressure control.
Where SRV66 is typically installed
SRV66 is most useful where a hygienic process benefits from higher-pressure distribution upstream but lower and more stable pressure at the equipment connection. Typical examples include sterilising equipment, process vessels, humidifiers and other clean steam users that do not need main-line pressure at the point of use.
Pressure station considerations
The source installation guidance recommends treating SRV66 as part of a complete pressure reduction station. That usually means clean upstream separation and filtration, downstream overpressure protection where required, and separate isolation valves because the reducing valve is not intended to serve as the shut-off device.
That wider station logic is important on clean steam lines because pressure reduction affects not only process setpoint accuracy but also steam quality, condensate behaviour and the protection limits of downstream hygienic equipment.
Related pressure-control routes
- Review SVL488 clean service safety valves when hygienic overpressure protection is also required downstream.
- Compare with STERI-TROL clean service control valves when the duty depends on pneumatic modulation rather than self-acting reduction alone.
- Browse the wider clean steam range to connect pressure reduction with separators, filters and hygienic shut-off valves.