Pilot operated pressure relief valve
Valvtechnologies

Consider the safety rating, productivity value and cost savings of ERV - the relief valve whose standard blowdown and set pressure is accurate to 1/10% of 1 psi. Our Electronic Relief Valve (ERV) is the perfect combination of zero-leak-tested isolation valve plus the electronic controls needed to monitor and regulate system pressure. Use it in vital applications, where its ASME Sec. 1, V-stamp certification is required; or in process-critical overpressure protection applications for extra safety assurance: ERV is the above-standard benchmark.
Key Benefits

* Zero-leakage guarantee comes standard
* Eliminate the need for costly field welding with optional integral isolation valve
* Flexible ½ to 12 inch sizing in ASME/ANSI Class 150 - 4500
* Specially engineered for easy adaptation to existing control suites
* Multiple actuator relief options - air, spring, hydraulic, AC/DC electric, failsafe and failsafe last position - extend applicability throughout plant or site