Apollo ASME Section IV high-capacity heating relief valves with female inlet, expanded or standard female outlet protect against excessive water pressure due to failure of controls to regulate BTU input. Elevated seat for drainage of water away from seat area. Entire pressure range is National Board capacity certified.
This 3/4″ x 1″ relief valve features a bronze body and spring cage, a silicone seat, and a fabric-reinforced molded diaphragm that isolates the spring from the water at all times. Made in the USA.
- 3/4″ female NPT inlet and 1″ female NPT outlet
- Certified pressure range: 15-160 psig
- Dimensions: 1.03″ x 5.25″ x 1.72″
- Weight: 236 lbs
- Capacity: 970,000
- Maximum temperature service: 250 degrees F
- Registered in all Canadian Provinces and Territories, CRN #0G8547.5C