Fluid Line Products” Wear Chek oil-sampling valve provides leak-free sampling of system fluids without the need for system shutdown. The unit can be opened with a pushbotton control. Double seal construction and automatic positive closing ensure zero leak performance in return lines and blocks, oil galleries, and pilot circuits. The unit”s one-piece, T-shaped design is rugged and compact to support installation in tight spaces. Material of construction is Zinc-plated steel. Operating pressure range is zero to 600 PSI. Minimum burst pressure is 2,400 PSI. Operating temperature range is -30 F to 250 F. Minimum particle restriction is 400 microns.