{"product_id":"3-4-inch-compression-to-1-2-inch-npt-pilot-unloade","title":"3\/4 Inch Compression To 1\/2 Inch NPT Pilot Unloader Check Valve For Air Compressors, Factory Set 140 PSI Cut In 175 PSI Cut Out, Tank Outlet 1\/2 Inch NPT, Inlet 3\/4 Inch Copper Tubing, 1\/8 Inch NPT Throttle Port For Gearheads","description":"\u003cdiv\u003e3\/4 to 1\/2 in NPT Pilot Unloader Valve for Air Compressors\u003cbr\u003e\n✔️ Brass bodied valve: 1\/2\" NPT outlet, 3\/4\" copper inlet, 145-175 psi \u003cp\u003eThis piloted discharge check valve blends a pilot valve, a pressure discharge valve, and a check valve into one unit to keep air delivery steady and unload when needed. It’s commonly used on gas-engine or electric-motor air compressors where reliable pressure regulation matters.\u003c\/p\u003e \u003cp\u003e✅ Material: Machined brass\u003cbr\u003e✅ Outlet: 1\/2\" NPT to tank\u003cbr\u003e✅ Inlet: 3\/4\" copper tubing side inlet\u003cbr\u003e✅ Port: 1\/8\" NPT throttle\/unloader\u003cbr\u003e✅ Factory set: 145 psi cut-in, 175 psi cut-out (adjustable 30-40 psi)\u003cbr\u003e✅ Max flow: 30 cfm\u003cbr\u003e✅ Muffler on exhaust port\u003cbr\u003e✅ Made in the United States\u003cbr\u003e\u003c\/p\u003e \u003cp\u003e💡 What is a piloted discharge check valve used for in air compressors?\u003c\/p\u003e\n\u003cp\u003eIt combines a pilot valve, a discharge valve, and a check valve to control and unload air pressure in one compact unit.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eunloads the compressor at the 145-175 psi window\u003c\/li\u003e\n\u003cli\u003ereduces cycling by venting through a muffled exhaust\u003c\/li\u003e\n\u003cli\u003e1\/8\" NPT throttle port supports engine or unloader control\u003c\/li\u003e\n\u003cli\u003eoutlet and inlet sizes match common air systems (1\/2\" NPT to tank, 3\/4\" copper inlet)\u003c\/li\u003e\n\u003c\/ul\u003e\n✝️\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":49082790215915,"sku":"VXB07VBGCDMS","price":125.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/vxb.com\/products\/3-4-inch-compression-to-1-2-inch-npt-pilot-unloade","provider":"VXB Bearings","version":"1.0","type":"link"}