Spirax Sarco Bronze Sight Glass Check Valve, BSPP 1/2in, 3.6 bar

Sight tube should be periodically checked for thinning. Combined Sight Glass and Check Valve. Spirax Sarco combined sight glass and check valve has been designed to observe discharges from steam traps. There is no need for a separate check valve as the condensate rises after the trap due to its position, thus simplifying installation. The valve is also suitable for use on other liquid lines for which the materials of construction are compatible. Position of ball check indicates whether or not condensate is flowing No need for separate check valve Gaskets made from Glass reinforced graphite laminate Horizontal or vertical fitting