Sempell Model SOH High Pressure Steam Safety Valve
The Sempell Model SOH High Pressure Steam Safety Valve by Emerson delivers precise, reliable overpressure protection for boilers, superheaters, and steam systems. Designed for high-pressure and high-temperature service, it provides tight shutoff, rapid lift, and exceptional durability—making it ideal for power generation and petrochemical applications.
The Sempell Model SOH High Pressure Steam Safety Valve, engineered by Emerson, is a premium high-performance safety valve designed for steam and high-pressure applications that demand exceptional reliability, accuracy, and protection. Built to safeguard boilers, superheaters, and steam systems, the Model SOH ensures precise overpressure protection and long-lasting performance in the most critical operating environments. With its proven nozzle and disc design, this valve guarantees tight shutoff and rapid full lift at set pressure, providing immediate relief and minimizing pressure fluctuations. The Sempell SOH is engineered for supercritical and subcritical boiler conditions, combining high flow capacity, robust construction, and superior seat tightness for optimum safety performance. The valve’s high-strength materials and precision-guided moving parts ensure smooth operation and minimal wear even under continuous high-temperature service. Suitable for use in power generation, petrochemical, and refining industries, the Model SOH is trusted for its durability, accuracy, and compliance with international safety standards.
Technical Specification of Sempell Model SOH High Pressure Steam Safety Valve
- Size Inlet:
- DN 40 – DN 250
NPS 1 ½? – NPS 10?
- Temperature Range:
- Up to +700 °C / +1300 °F
- Set Pressure:
- 10 – 320 bar
- Orifice Diameter:
- 17.5 ?–160 mm
- Design:
- Open bonnet, balanced piston, pneumatically assisted
- Body Material:
- 1.0460/SA105
1.0619/SA216 WCB
1.7335/SA182 F12
1.7357/SA217 WC6
1.7380/SA18 F22
1.7379/SA217 WC9
1.4903/SA182 F91
1.4901/SA182 F92
Other materials available on request
- Accessories:
- Position indicator
Feature of Sempell Model SOH High Pressure Steam Safety Valve
- High tightness up to set pressure due to supplementary load
- Smooth operation (no forces by popping)
- Rigid body design
- Self-aligning spring assembly
- Low friction, spring compression
- Mechanical lift stop ensures functional stability
- Locking for hydrostatic test without additional parts
- High allowable back pressure