An installation kit that includes everything you need to get the WV-1 automatic tank drain up and running. The kit includes the WV-1 drain valve with push-in fitting installed, push-to-connect T, petcock, 8 ft. of nylon tubing and installation instructions that cover most compressor applications. Has 1/4" NPT Male inlet, 1/4" NPT Female outlet w/ 1/8" NPT female pilot.