The Spirax Sarco Hills Sight check is a combined sight glass and check valve. It is used to observe discharges from steam traps. The position of the ball check indicates whether or not condensate is flowing. Where condensate rises after the trap it eliminates the need for a separate check valve thus simplifying installation. The sight check is particularly useful for commissioning a steam trap fitted with an adjustable needle valve / steam lock release (SLR). It can also be used on other liquid lines where the materials of construction are compatible.
Standard size 1/2″ BSP, further sizes available on request.