Pressure Safety Valve with Changeover Valve (Single Control)
A dual-valve overpressure protection system comprising one changeover valve and two parallel spring-type safety valves sharing a common inlet. Designed to allow one safety valve to remain online while the other is isolated for inspection or maintenance, enabling seamless switching between the two without requiring a system shutdown. Compatible with a wide range of media, temperatures, and pressure ratings, with flange connections available to national or international standards. The valve must be installed vertically at the gas phase interface of the vessel or pipeline.
- Three-way flow path design with two identical safety valves — one active, one on standby
- Hot-swap switching with no shutdown required, ensuring continuous overpressure protection
- Low flow resistance to maintain sufficient discharge capacity at all times
- Relief valve installed beneath each safety valve for safe medium discharge prior to disassembly
- Balance valve included for high pressure classes (≥ 600 lb) for light and easy operation
- Reliable sealing integrity maintained even after repeated switching cycles
- Simple, fast, and safe reversing system operation
- Wide operating temperature range covering both cryogenic and high-temperature service
A dual-valve overpressure protection system comprising one changeover valve and two parallel spring-type safety valves sharing a common inlet. Designed to allow one safety valve to remain online while the other is isolated for inspection or maintenance, enabling seamless switching between the two without requiring a system shutdown. Compatible with a wide range of media, temperatures, and pressure ratings, with flange connections available to national or international standards. The valve must be installed vertically at the gas phase interface of the vessel or pipeline.
- Three-way flow path design with two identical safety valves — one active, one on standby
- Hot-swap switching with no shutdown required, ensuring continuous overpressure protection
- Low flow resistance to maintain sufficient discharge capacity at all times
- Relief valve installed beneath each safety valve for safe medium discharge prior to disassembly
- Balance valve included for high pressure classes (≥ 600 lb) for light and easy operation
- Reliable sealing integrity maintained even after repeated switching cycles
- Simple, fast, and safe reversing system operation
- Wide operating temperature range covering both cryogenic and high-temperature service