The SRV 811R safety relief valve is installed downstream of pressure regulators to relieve limited volumes of gas. Used where venting to the atmosphere is acceptable, it provides a cost-effective solution to prevent safety shut-off valves from triggering in case of creep leaks from regulators.
Model 10L valve has a designed-in aspirating characteristic that minimizes system pressure rise during relief valve operation. The relief valve curves indicates a drop-in relief
pressure with increasing fl ow followed by a gradual rise as the valve strokes to full open
position.