{"product_id":"castair-1-2npt-f-1-2-npt-f-outlet-vent-outlet-1-4-npt-f-pilot-60-max-cfm-gas-engine-2-way-pilot-valve","title":"Castair 1\/2\"NPT-F 1\/2\" NPT-F Outlet, Vent Outlet 1\/4\" NPT-F Pilot 60 Max. CFM, Gas Engine 2 Way Pilot Valve","description":"\u003cp\u003eThe Cast Air BLG is the high-flow pilot valve for gas engine-driven compressors that need a 1\/2\" NPT control circuit. It is the gas engine counterpart to the electric-application BLE — same 1\/2\" NPT-F inlet and outlet, same 60 CFM flow capacity, same hex brass body, but rated and configured for gas engine compressor applications. At $147.84, it is the top of the Cast Air pilot valve lineup, reflecting both the larger port size and the gas engine-specific design requirements.\u003c\/p\u003e\n\n\u003cp\u003eIf you are running a large trailer-mounted or stationary gas engine compressor — the kind used in oilfield, construction, or heavy industrial service — and the pilot valve that controls the load\/unload cycle has failed, sticks, or is hunting between states, this is the replacement part to source. The external adjustment makes it possible to dial in both cut-in pressure and differential without pulling the valve off the compressor.\u003c\/p\u003e\n\n\u003ch3\u003eWhat the BLG Does\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Gas engine-driven air compressors — manages the pilot signal controlling loading and unloading on larger gas engine compressor systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e 2-way pilot valve — two ports, one function per signal, reliable and straightforward to troubleshoot\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInlet:\u003c\/strong\u003e 1\/2\" NPT-F — threads directly into standard 1\/2\" NPT manifold or control circuit ports\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutlet:\u003c\/strong\u003e 1\/2\" NPT-F — full-size outlet preserves flow capacity; no restriction through the valve body\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePilot Port:\u003c\/strong\u003e 1\/4\" NPT-F — appropriately sized for the higher-flow pilot circuit this valve manages\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlow Capacity:\u003c\/strong\u003e 60 max CFM — handles the control circuit demands of larger gas engine compressor systems without starving the signal\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eConstruction and Adjustment\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e Hex brass — corrosion-resistant, robust connection threads, holds up in the field environments where gas engine compressors typically operate\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePressure Adjustment:\u003c\/strong\u003e Full external pressure adjustment — set the actuation pressure at the valve without removing it from the system; critical for field service where disassembly is not always practical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDifferential Adjustment:\u003c\/strong\u003e Full external differential adjustment — tune the spread between cut-in and cut-out to match engine speed recovery characteristics; prevents short-cycling that wears engine and compressor components prematurely\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePressure Range:\u003c\/strong\u003e 40–250 PSI available; most gas engine compressor applications in this flow class order the 100–120 PSI or 140–170 PSI versions — confirm working pressure before specifying\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorrosion Resistance:\u003c\/strong\u003e Corrosion-resistant construction throughout — built for the outdoor and field environments where trailer-mounted gas engine compressors live\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhere This Valve Fits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eReplacement pilot valve on large gas engine compressors with 1\/2\" NPT control circuit ports\u003c\/li\u003e\n  \u003cli\u003eNew builds for industrial or oilfield gas engine compressor installations requiring a full 60 CFM pilot valve\u003c\/li\u003e\n  \u003cli\u003eField service replacements where the original valve has failed in service — the external adjustments let you set it correctly on-site without a workbench\u003c\/li\u003e\n  \u003cli\u003eNot for electric compressor applications — the BLE covers 1\/2\" NPT, 60 CFM electric applications\u003c\/li\u003e\n  \u003cli\u003eNot for 1\/4\" NPT gas engine circuits — the BG2-M (20 CFM) handles those applications at a lower cost\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eBLG vs. the Cast Air Pilot Valve Lineup\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBG2-M — $78.54:\u003c\/strong\u003e 1\/4\" NPT-F, 20 CFM, gas engine — smaller gas engine compressors with 1\/4\" control ports\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBLE — $123.20:\u003c\/strong\u003e 1\/2\" NPT-F, 60 CFM, electric dual — same port size and flow, electric application\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBLG (this valve) — $147.84:\u003c\/strong\u003e 1\/2\" NPT-F inlet and outlet, 1\/4\" NPT-F pilot, 60 CFM, gas engine — largest in the lineup, highest flow, gas engine rated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBE2-M — $91.63:\u003c\/strong\u003e 1\/4\" NPT-F, 20 CFM, electric dual — for reference on the smaller electric side\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eBefore ordering the BLG versus the BG2-M, check your control circuit port size at the compressor. Gas engine compressors vary considerably in how the pilot circuit is ported — a 1\/4\" port means the BG2-M, a 1\/2\" port means the BLG. Getting that right the first time avoids bushing adapters and potential flow restriction in the control circuit.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSKU \/ Part Number:\u003c\/strong\u003e BLG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Cast Air (Castair)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e 2-Way Pilot Valve\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Gas Engine\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInlet Port:\u003c\/strong\u003e 1\/2\" NPT-F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutlet Port:\u003c\/strong\u003e 1\/2\" NPT-F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePilot Port:\u003c\/strong\u003e 1\/4\" NPT-F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Flow:\u003c\/strong\u003e 60 CFM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePressure Range:\u003c\/strong\u003e 40–250 PSI (specify range at order)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCommon Range Orders:\u003c\/strong\u003e 100–120 PSI or 140–170 PSI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Material:\u003c\/strong\u003e Hex brass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustment:\u003c\/strong\u003e External pressure and differential adjustment\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrice:\u003c\/strong\u003e $147.84\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialist since 2016\u003c\/strong\u003e — gas engine compressor parts are a known category for us; we can help you match the correct pilot valve to your specific compressor configuration\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e on orders to the contiguous US\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFree tech support at 866-217-0063\u003c\/strong\u003e — call with your compressor specs and port sizes before ordering if there is any uncertainty about which valve fits\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull manufacturer warranty\u003c\/strong\u003e — Cast Air warrants their parts; we process warranty replacements without delays\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull lineup stocked\u003c\/strong\u003e — we carry all four Cast Air pilot valve models so you get the correct part matched to your application, not a substitute\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCall 866-217-0063 for quick answers and help!\u003c\/strong\u003e\u003c\/p\u003e\n","brand":"Cast Air","offers":[{"title":"Default Title","offer_id":53342520541397,"sku":"BLG","price":272.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0622\/8466\/0949\/files\/AirCompressorPilotValve_0f1dcd7b-ad18-410b-8ca7-da7b5cc6d1e9.jpg?v=1772652582","url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-1-2npt-f-1-2-npt-f-outlet-vent-outlet-1-4-npt-f-pilot-60-max-cfm-gas-engine-2-way-pilot-valve","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}