Texas Pneumatic Tools Y-line strainers are Y-shaped pipe fittings for removing or filtring out unwanted solids from liquid, gas or steam lines using a mesh filter. They are ideal for protecting pumps, meters, control valves, steam traps & regulators from contamination. These Y-line strainers are made from cast iron for withstanading high-pressure streams and can be installed vertically or horizontally (with filter arm facing downwards for efficient operation). Choose from a wide range of strainers, available in 1/2, 3/4, 1, 1-1/4, 1-1/2 and 2 inch sizes.