No hydro plug is necessary as the pilot assembly can be mechanically gagged.
This valve utilizes a non-flow pilot construction.
The pilot eliminates seat leakage, enabling economizers to run at elevated pressures and maximize flow capacity. Consistent, repeatable tight shut-off of the valve seat further boosts overall operational efficiency.
This unit delivers overpressure safeguarding for economizers in steam discharge applications where liquid-qualified safety relief valves or conventional pilot-operated safety relief valves are not viable. It holds ASME Section I certification for steam and water service in compliance with ASME Code Case 2446.
A pressure snubber is integrated within the pilot piping, which suppresses valve chatter triggered by abrupt pressure fluctuations and water hammer shockwaves.
Technical Data
- Temperature range
- -20°F to 505°F, above 505°F with heat exchanger
- Pressure rating
- 40 psig to 5800 psig
- Body material
- Carbon steel base and 316 stainless steel internal components; pilot valve 316 stainless steel
Specifications
- Inlet Sizes
- 1” through 12”
- Inlet Ratings
- ASME Class 150 to 2500
- Outlet Sizes
- 2” through 16”
- Outlet Ratings
- ASME Class 150 to 300
- Orifice Sizes
- D through W