Hot Water (District Heating / Process Hot Water) service
Service Selection
Safety & Relief Valves for Hot Water (District Heating / Process Hot Water) Service
Which safety & relief valves configuration suits Hot Water (District Heating / Process Hot Water) (H₂O (pressurised)), in which material, to which standard — from real service data, with the pitfalls flagged.
Which safety & relief valves for Hot Water (District Heating / Process Hot Water)?
Safety Relief Valve - Overpressure protection on hot water boilers and district heating heat exchangers Typical service window: 6–25 barg, 60–180°C.
Recommended Configurations
Safety Relief Valve
Overpressure protection on hot water boilers and district heating heat exchangers
Body Material for Hot Water (District Heating / Process Hot Water)
Rated from real compatibility data - click any material for the full decision page.
Governing Standards for Hot Water (District Heating / Process Hot Water) Service
EN 14336 (district heating valves)ASME B16.34EN 1092-1 (European flanges)DIN 4747 (district heating)
What to Avoid in Hot Water (District Heating / Process Hot Water) Service
- Bronze valves for high-pressure district heating above 25 barg
- PTFE-seated butterfly valves for high-temperature hot water - use EPDM
Service Considerations
- EPDM seats required for hot water above 90°C - PTFE seats suitable only for static sealing
- District heating: large-bore butterfly valves with electric actuators for remote operation
- Balancing valves (PICV) essential in large networks to maintain design flow in each circuit
- Thermal insulation of valve bodies required to minimise heat loss in district heating networks
Other valve types for Hot Water (District Heating / Process Hot Water)
Safety & Relief Valves for other services
Safety & Relief Valves for Ammonia (NH₃)Safety & Relief Valves for LNG / Cryogenic Natural GasSafety & Relief Valves for High-Pressure SteamSafety & Relief Valves for LPG - Liquefied Petroleum GasSafety & Relief Valves for Nitrogen (N₂)Safety & Relief Valves for Liquid Nitrogen (LN₂)Safety & Relief Valves for Argon (Ar)Safety & Relief Valves for Propylene / Propene (C₃H₆)
Reviewed by Process Engineering, Vajra Industrial SolutionsDiscipline: Process & Fluid Service EngineeringLast reviewed: 20 June 2026
Connected Engineering
Standards
Products
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