Danfoss CHV-X 125 function module (complete top part) for the SVL Flexline CHV-X check (non-return) valve range, code 148B6119. The function module is the complete field-serviceable operating top part — guide, spring, renewable seat and cone, gaskets and bolts — that mounts onto the matching 125 mm (5 in) CHV-X valve housing to make up or repair a complete check valve. Maximum working pressure 52 bar (754 psig); media temperature range -60 to 150 C (-76 to 302 F). For HCFC, non-flammable HFC, R717 (ammonia) and R744 (CO2) industrial refrigeration systems.