Safety valve with pressure up to 1.2bar. Connect by flange screwed on valve body: G 3/4-FG 1-F; G 1 1/4-F; 3/4"NPT-F; 1 "NPT-F; 1 1/4" NPT-F. Connections to EN or ASME flanges are available upon request. only when the inlet pressure exceeds the initially set value will the relief valve allow the fluid to close through it. When the pressure is below the set value, the relief pressure is again controlled by the rubber membrane.