The Si 8 Series safety relief valves provide reliable overpressure protection for demanding industrial applications, designed to API Standard 526 and certified for ASME VIII and PED compliance. They feature a full nozzle design and a one-trim configuration for gas, vapour, and liquid applications. With orifice sizes from D to T, as well as extended options for very large flow capacities (V and W), they ensure high performance in refineries, chemical plants, and power facilities.

Key features

Set pressures: 0.5–414 bar

Temp range: -268°C to +538°C

Full nozzle design for durability

Positive lift stop for safety

Material flexibility for industries

Optional heating jackets & bellows