Standard Steel Liquid Gauge with Straight Threads and Buna-N Seals - 4in., 1/2in.-20

Item # B1559-10400BA1W, Standard Steel Liquid Level Gauge, 4 Centerline, Front Mount 1/2-20Standard Steel Liquid Level Gauges can be used to view liquid levels in hydraulic reservoirs, tanks, large steel mill pumps, gearboxes, bearing housings, crankcases, transformers and machinery oil reservoirs. Their use can be extended to any industrial liquid level viewing application .This sturdy gauge is made of plated steel. The glass sight is protected by steel on three sides. A red line on a white background enhances liquid level visibility. Leak-proof construction is achieved with Buna-N seals. The unit tolerates up to 125 PSI and 225° F .Fluid enters through the cross hole in the hollow lower bolt. The gauge is vented into the tank through the cross hole in the top bolt. The length between the center of the two bolts is referred to as the center line. The distance between the center of the tank holes must be within 1/32 of the center line measurement. This gauge is mounted from the front of the tank with 2 1/2-20 plated steel bolts. The bolts should be torqued to 90 in-lbs. For fractional inch centerline distances, level markings or other seal options, please consult factory .