The Anderson Greenwood Series 5100 pilot-operated pressure-relief valve is designed for over-pressure protection of economizers in fossil-fired power plants. The Anderson Greenwood Series 5100 ...

It’s called the pilot-operated relief valve, and it sits atop the pressurizer attached to the Unit 2 reactor of Three Mile Island. It is often referred to as PORV, and something went very ...

balanced spring-operated relief valves (balanced using a bellows or balanced piston), rupture discs, pilot-operated relief valves, and rupture-pin relief devices. Combinations of these devices may ...

Many combined cycle power plants are being operated as peaker plants, rather than as baseload units. That can pose a problem for economizer safety valves. Pilot-operated safety valves offer several… ...

MONTVILLE, N.J.--(BUSINESS WIRE)--Marotta Controls, a rapidly growing aerospace and defense supplier, announced it has upgraded its motor operated pilot valve (MOPV) used in aqueous film-forming ...

The failure of a pilot-operated relief valve in the primary circuit was a key factor in the partial meltdown of a reactor at the Three Mile Island plant in the US in March 1979, and which led to ...