W L Hamilton, Pressure Relief Valve, Adjustable 0-300PSI, Brass, BSP
Popular for use on ring mains for heating oil burners where a line pressure needs to be maintained upstream of Pressure Regulating Valves at the burner entry points. The valves are adjustable from zero up to 13.75 or 27.50 Bar, though we recommend a minimum line pressure requirement of 0.5 Bar or greater, as the valve will oscillate (make noise) at very low pressures when the spring becomes "wobbly", when the spring is under tension the oscillation will not occur.
Specification of the valves we offer differs from the standard product specification on the W.L.Hamilton datasheet attached.
A quality product manufactured in the U.S.A
Specification| Model | 2042-01 | 2053-01 |
| Inlet Thread | 1/2" NPT Male (compatible with 1/2"BSP) | 3/4" NPT Male (Will fit a 3/4"BSP Paralell Female) |
| Outlet Thread | 1/2" NPT Female (compatible with 1/2"BSP) | 3/4" NPT Female (Will accept a 3/4"BSP Taper Male Fitting) |
| Max Working Temp | 80 Celcius | 80 Celcius |
| Max Pressure | 300 PSI | 300 PSI |
| Pressure Range | 0-300 PSI | 0-300 PSI |
Wetted components| Body | Brass |
| Valve Ball | 316 Stainless Steel |
| Valve Stem | Brass |
| Spring | 316 Stainless Steel |
| Seal | NBR (External on adjustment shaft, easily replaceable with Viton or Other material) |
Download W.L.Hamilton Pressure Relief Valve - Technical Spec PDF
