Spirax Sarco Check Valves for Steam Systems
Spirax Sarco’s check valve range is specifically designed for steam and condensate system applications where reliable non-return performance is critical. Unlike general-purpose check valves, Spirax Sarco non-return valves handle the unique challenges of steam service — flash steam, thermal cycling, and hot condensate.
PureSys India supplies Spirax Sarco check valves. Browse all check valves or visit the Spirax Sarco brand page.
Product Range
DCV Series — Disc Check Valves
The Spirax Sarco DCV series are compact wafer-pattern disc check valves — space-efficient non-return valves for installation between flanges. Features:
- Compact wafer design — minimises installation space
- Spring-loaded disc — suitable for vertical and horizontal installation
- Suitable for steam, condensate, water, and compressed air
- Available in stainless steel and carbon steel
SCV Series — Swing Check Valves
Spirax Sarco swing check valves use a hinged flap that opens under forward flow and closes by gravity or spring when flow stops. These are widely used on pump discharge lines and condensate return headers.
NRV Series — Non-Return Valves for Condensate
Specially designed for condensate return lines, the NRV series handles the aggressive conditions of hot condensate with flash steam. Stainless steel internals resist the corrosive oxygen-laden condensate found in many industrial systems.
Where to Use Spirax Sarco Check Valves
- Steam trap outlets: Preventing reverse flow and flooding of traps
- Condensate pump discharge: Protecting pumps on stop
- Parallel steam trap installations: Isolating individual traps
- Boiler feedwater lines: Preventing reverse flow into feedwater pumps
- Compressed air systems: Maintaining downstream pressure on compressor shutdown
Installation Guidelines
Correct check valve installation is essential for reliable operation:
- Install in the direction of flow — arrow on body must point downstream
- Allow sufficient straight pipe upstream and downstream
- Disc check valves can be installed in any orientation if spring-loaded
- Swing check valves require horizontal or upward vertical flow
Order from PureSys India
View our Spirax Sarco check valves range, explore our steam system optimisation services, or contact our team for sizing and pricing.