The Watts 2 174A 050 FS is a 2-inch FNPTF x FNPTF bronze pressure safety relief valve designed for hot water space heating boilers. Featuring a 50 PSI factory set pressure and a discharge capacity of 5,575,000 BTU/hr, it protects hydronic heating systems from over-pressurization. Constructed with an ASME HV safety rating, heavy-duty bronze body, stainless steel spring, non-metallic disc-to-metal seating, and an integrated test lever handle.
We have inspected this item and we do not have the capability to install the unit to fully test it. There are some cosmetic scuffs and scratches throughout the unit.
Please refer to the photos for more information.
This unit only includes what is photographed in the listing.
Made in USA.
Technical Specs
| Item | Safety Relief Valve |
| Manufacturer Part Number | 2 174A 050 FS |
| Product Type | Pressure Only Relief Valve |
| For Media | Water |
| Factory Set Pressure | 50 psi |
| Connection Type | FNPTF x FNPTF |
| Inlet Connection Size | 2 in |
| Outlet Connection Size | 2 in |
| Body Material | Bronze |
| Seat Material | Metal |
| Spring Material | Stainless Steel |
| Operating Pressure Range | 30 psi to 150 psi |
| Operating Temperature Range | -40 °F to 250 °F |
| Discharge Capacity | 5,575,000 BtuH |
| Overall Height | 11-1/2 in |
| Overall Width | 6-1/2 in |
| Application | Hot Water Space Heating Boiler |
| Country of Origin | USA |