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
Material Specifications
Ball Check
Body
Cap & Cover
Cover Bolts
Discharge Tube
Sight Tube
BS 970 420 S45 Stainless Steel
BS 1400 LG1 Gunmetal
BS 1400 PC81 Brass
BS 3692 Gr. 8.8 Steel Zinc Plated
BS 2871 PT2 C106 Copper
Borosilicate Glass
Warning
Sight tube should be periodically checked for thinning