Sempell Model EPRV Electro Pneumatic Relief Valve
Sempell EPRV electro-pneumatic relief valve provides fast, reliable overpressure protection for high-pressure steam boilers using a spring-loaded main valve with double-acting pneumatic actuation and STE8 control unit.
The Sempell Model EPRV Electro Pneumatic Relief Valve is an advanced, high-performance pressure relief solution designed for applications requiring precise and responsive overpressure protection. Integrating pneumatic actuation with electronic control, this valve ensures accurate pressure management, fast activation, and reliable performance in demanding process environments. The EPRV utilizes electro-pneumatic technology to enable real-time pressure control based on process conditions, allowing users to configure setpoints remotely and adjust relief pressure dynamically. This feature makes it ideal for modern process automation systems, especially in applications with fluctuating pressure profiles or rapid transient conditions. The valve is engineered for high-pressure and high-temperature service, commonly used in power generation, chemical processing, petrochemical facilities, and steam systems. Its robust mechanical design, coupled with precise electronic monitoring and actuation, provides exceptional reliability, reduced system downtimes, and optimized safety across critical process operations.
Feature of Sempell Model EPRV Electro Pneumatic Relief Valve
- Small opening and closing pressure difference
- High reproducibility
- Lifting of the SEP also below set pressure possible
- Adjustment control of the SEP without changing the system pressure
- Check of the control function without response of the SEP
- System pressure signal at pressure switch
- Compact
- Easy to operate
- Very ruggedly design for high pressure and temperature
- With removable seat insert, replacing the seat while the valve can stay installed
- Simple replacement of parts, no special tools necessary
- Double acting cylinder
Technical Specification of Sempell Model EPRV Electro Pneumatic Relief Valve
| Specification | Details |
|---|---|
| Valve Type | Electro pneumatic pressure relief valve |
| Actuation | Pneumatic with electronic controller |
| Pressure Rating | Typically up to ASME Class 4500 (varies by design) |
| Temperature Rating | Suitable for high-temperature service (steam, energy systems) |
| Body Materials | Carbon steel, stainless steel, high alloy steels |
| Seat Materials | Metal-to-metal, optional soft-seated |
| Operation Mode | Remote setpoint adjustment, modulating or on/off |
| Standards | ASME VIII, API 520/521, EN standards |
| Monitoring | Digital I/O, pressure transmitters, actuator feedback |
| Fail-Safe Options | Spring-loaded or pilot-assisted |