| Pressure Set Point: | 125 psi |
|---|---|
| Capacity: | 12170000 BTU/hr |
| Size: | 2" |
| Material: | Bronze |
| Application: | Heating |
| Thread Type: | Female |
| Temperature Range (F): | 250°F Max |
| Connection Type: | Threaded |
| ASME: | Yes |
You likely have a relief valve designed to release pressure at 30 psi. This is part 0274428 on our website.
relief valves come in different pressures like 30 50 75 125 150 are the most you would see yours you said is 30 so if the water pressure gets over 30 psi the valve opens and lets water out to keep from any damage to the system. PUT ON SAME SIZE YOU THAKE OFF