Pressure relief valves are used for the decay of pressure surges and of permanent overpressures within pipeline systems.
SR 6.2K and SR 6.2P are self-energized valves with lowest possible response times. They operate without any auxiliary or external energy.
The body is of welded construction and, therefore, very lightweight compared with cast ones. Building length, connections and materials can be customized to any requirement. The straightway valve with optimised design features the least possible flow loss. The valve cone is of the soft seal type.
SR 6.2K is directly acting with piston actuation. The response pressure has been pre-set.
SR 6.2P is pilot-controlled, the response pressure and the closing time are adjustable. If a second pilot valve is used, the valve can be switched to another pre-set response pressure.
At the control unit (closing piston) the inlet pressure is in balance with the valve spring force (set value). If the inlet pressure rises above the set value, the valve opens (in the pilot valve and/or in the inner chamber of the main valve). With the inlet pressure falling the valve closes, driven by the spring tension and the increasing pressure downstream of the closing piston. In a depressurized line the valve remains closed.
The valves are completely tubed. Control lines or similar are not required. The version for either horizontal or vertical installation can be selected.
Please click HERE to view the SR6.2 One Sheeter