Series 53 Pressure Relief Valves are used in residential applications to protect against excessive pressure on domestic storage tanks and tankless water heaters. It consists of a bronze body construction with NPT threaded male inlet and NPT threaded female (drain) outlet connections, and stainless steel spring. Pressure Range: 75 to 175psi (5.2 to 12.1 bar), Standard Pressure Setting: 75psi (516.7 kPa), Optional Settings: 100, 125, and 150psi (6.9, 8.6, and 10.3 bar); Also available at 50psi (3.45 bar) setting.
These soft-seated butterfly valves are designed for a variety of general applications in the control of water, steam, air, oil, and gases. They are equally effective for on-off, throttling, isolation, and dead end requirements. They are especially well suited for higher velocity service and vacuum service.
| Watts | Mueller Steam Specialty | |
|---|---|---|
| Product Category | Industrial Valves | Industrial Valves |
| Product Number | 53 | 53 |
| Product Name | Pressure Relief Valve | Semi-Lug Butterfly Valves |
| Valve Type | Relief | Butterfly |
| Media | Water | Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Hydraulic (optional feature); Air; Breathable; Compressed Air; Chemical (optional feature) |
| Valve Size | 0.50 to 0.75 inch (12.70 to 19.05 mm) | 2.00 to 12.00 inch (50.80 to 304.80 mm) |
| Primary Material | Cast Iron | |
| Maximum Pressure | ? to 250.00 psi (? to 176 m H2O) |
