Valves
Pressure Relief Valves
Series 250/260 Pressure Relief Valves
Features and Benefits
- For tanks and hydronic heating systems
- Protects against over-pressure
- Minimizes hammering with flash steam
- Low differential pressure – 3 psi (.21 kg/cm2) between opening and closing
- Meets ASME Pressure Vessel and Boiler Code, Section IV
- Maximum temperature 250°F (121°C)
- Maximum operating pressure range 30 – 125 psig (2.1 – 8.8 kg/cm2) – Series 250
- Maximum operating pressure range 30 – 50 psig (2.1 – 3.5 kg/cm2) – Series 260
Sizes and Materials – Series 250
- 3⁄4″ – 1″ NPT – bronze body and seat
- 2″ NPT – cast iron body, brass seat
- EPDM rubber diaphragm and seat disc
Sizes and Materials – Series 260
- 1 1/2″ NPT Inlet and 2″ NPT Discharge– cast iron body and brass seat
