{"product_id":"air-compressor-pressure-switch-replacement-valve-w","title":"Air Compressor Pressure Switch Replacement Valve With Unloader For Four Port Systems 145 To 175 PSI Black Durable Control Unit Fits One Quarter Inch NPT Port And Replaces Furnas Square D H4 Compatible Models For Home Shop Use","description":"\u003cdiv\u003eAir Compressor Pressure Switch for Four-Port Systems\u003cbr\u003e\n✔️ 1-unit pack, 145-175 PSI range, 1\/4 in NPT, unloader \u003cp\u003eThe four-port pressure switch is a compact control valve used to regulate air pressure in four-port air compressor setups. It includes an unloader function to vent pressure when the unit stops, improving startup and reducing motor wear in home shop systems that use 1\/4 in NPT piping.\u003c\/p\u003e \u003cp\u003e✅ Four-port pressure switch with unloader for 145-175 PSI range\u003cbr\u003e\n✅ 1\/4 in NPT port fits common home\/shop lines\u003cbr\u003e\n✅ Durable black control unit for four-port systems\u003cbr\u003e\n✅ Replaces standard control valves in compatible models for easy upgrade\u003cbr\u003e\u003c\/p\u003e \u003cp\u003e💡 What is an air compressor pressure switch used for?\u003c\/p\u003e\n\u003cp\u003eIt controls start\/stop cycling and unloads pressure for a safe, handy operation in home shop systems.\u003c\/p\u003e\n- regulates cycling pressure for safe operation in a 145-175 PSI system\n- unloader feature reduces motor wear by venting pressure at shutdown\n- compatible with 1\/4 in NPT ports in four-port air compressor setups \u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":48207329853675,"sku":"VXB00QHUKUYS","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/51EC0M0x4ZL.jpg?v=1778813531","url":"https:\/\/vxb.com\/products\/air-compressor-pressure-switch-replacement-valve-w","provider":"VXB Bearings","version":"1.0","type":"link"}