Series 530C Calibrated Pressure Relief Valves are used in commercial, residential and industrial applications to protect against excessive pressure in systems containing water, oil, or air. It consists of a bronze body construction with NPT threaded male inlet and NPT threaded female (drain) outlet connections, stainless steel spring, brass bonnet, Buna-N disc, and Buna-N O-ring. Series 530C has a calibrated adjustment feature for setting the valve to the required relief pressure, and is ideal for by-pass thermal expansion pressure relief (not ASME approved). Model 530FP is for use in fire protection systems. Maximum Pressure: 300psi (20.67 bar). Adjustable Pressure Ranges: Sizes 1/2, 3/4 in. (15 to 20mm) - 50 to 175psi (3.45 to 12.06 bar), Size 3/4 in. (20mm) - 100 to 300psi (6.89 to 20.67 bar).
WATTS® Pressure Relief Valve, Calibrated, Series: 530, 1/2 in Nominal, MNPT x FNPT, 50 to 175 psi, 180 deg F, Brass Body, Buna-N® O-Ring, 1-5/8 in W x 3 in H, Domestic
| Type | : | Calibrated |
| Series | : | 530 |
| Nominal Size | : | 1/2 in |
| End Style | : | MNPT x FNPT |
| Pressure Rating | : | 50 to 175 psi |
| Temperature Rating | : | 180 deg F |
| Body Material | : | Brass |
| Softgoods Material | : | Buna-N® O-Ring |
| Dimensions | : | 1-5/8 in W x 3 in H |
| Domestic/Import | : | Domestic |
- Calibrated adjustment feature for setting valve to relief pressure required
- Adjustable range 50 to 175 psi (3.4 to 12.1 bar)
- All stainless steel spring
- Buna-N disc on machined body seat
- Inlet (bottom), male NPT threaded
- Outlet (side), female NPT threaded
- Brass bonnet
- Buna-N (nitrile) disc
- Brass spring washer
Data/Spec Sheet-1