{"product_id":"castair-1x1-inline-check-valve-npt-female-inlet-outlet","title":"Castair 1\"X1\" Inline Check Valve NPT Female Inlet\/Outlet","description":"\u003ch2\u003eCastair CLB1010 — 1\" x 1\" Inline Check Valve, NPT Female Inlet\/Outlet\u003c\/h2\u003e\n\n\u003cp\u003eThe CLB1010 is a 1-inch by 1-inch NPT female inline check valve from Castair. It is part of the Castair inline check valve series — female NPT connections on both the inlet and outlet, designed for installation in compressed air distribution lines to allow airflow in one direction only and prevent backflow.\u003c\/p\u003e\n\n\u003cp\u003eInline check valves like the CLB1010 are used at several points in a compressed air system: at the outlet of the compressor pump before the receiver tank to prevent tank air from backflowing into the pump on shutdown, in multi-compressor installations to prevent one unit from pressurizing another, and in distribution systems where zone isolation is needed. The 1-inch female-by-female NPT configuration threads directly into standard pipe fittings or manifolds without adapters.\u003c\/p\u003e\n\n\u003ch3\u003eWhat This Unit Does\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Way Flow Control:\u003c\/strong\u003e Allows air to pass in one direction. When upstream pressure drops below downstream pressure, the check closes automatically to prevent reverse flow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFemale NPT Inlet and Outlet:\u003c\/strong\u003e Both ports are 1-inch NPT female — thread a nipple or male-threaded fitting into each port to install inline in your system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInline Body:\u003c\/strong\u003e Straight-through flow path — simpler installation than tank-mount check valves, and interchangeable with standard pipe tee or union connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCastair Construction:\u003c\/strong\u003e Built to the same standards as Castair's other major air system components. Suited for industrial and commercial compressed air service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCastair Inline Check Valve Lineup (CLB Series)\u003c\/h3\u003e\n\u003cp\u003eThe CLB series covers the most common pipe sizes for distribution systems:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCLB1414 (1\/4\" x 1\/4\"):\u003c\/strong\u003e NPT Female — light-duty drops and control lines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCLB1212 (1\/2\" x 1\/2\"):\u003c\/strong\u003e NPT Female — small shop and garage installations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCLB3434 (3\/4\" x 3\/4\"):\u003c\/strong\u003e NPT Female — mid-size commercial systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCLB1010 (1\" x 1\"):\u003c\/strong\u003e NPT Female — main line and large commercial\/industrial installations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCLB112112 (1-1\/2\" x 1-1\/2\"):\u003c\/strong\u003e NPT Female — high-volume industrial distribution\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eCastair also offers in-tank check valves (CTB and CTD series) for direct tank installation with a side port for unloaders — rated at 500 PSIG, 400°F. The CLB series is for inline distribution piping, not for direct tank mounting.\u003c\/p\u003e\n\n\u003ch3\u003eWhen Do You Need an Inline Check Valve?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-compressor setups:\u003c\/strong\u003e When two or more compressors feed a common receiver or distribution manifold, a check valve on each compressor outlet prevents backflow from the running unit into the idle unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZone isolation:\u003c\/strong\u003e Check valves at branch points prevent back-pressurization of an idle branch from an active one when check valves replace or supplement ball valves.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReceiver tank protection:\u003c\/strong\u003e Some installations use inline check valves between the pump and receiver as a backup to the standard tank check — particularly in high-cycle or high-vibration environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e CLB1010\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Size:\u003c\/strong\u003e 1\" NPT Female\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Size:\u003c\/strong\u003e 1\" NPT Female\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Style:\u003c\/strong\u003e Inline — straight-through flow path\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Type:\u003c\/strong\u003e NPT Female both ends\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e CLB Inline Check Valve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Castair, Spicer, Minnesota\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h3\u003e\n\u003cp\u003eWe have sold and supported Castair air system components since 2016. We carry the complete CLB inline check valve series and the full Castair component lineup. Call 866-217-0063 if you need help selecting the right check valve type and size for your installation. Free shipping on qualifying orders, full manufacturer warranty, free technical support.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCall 866-217-0063 for quick answers and help!\u003c\/strong\u003e\u003c\/p\u003e","brand":"Cast Air","offers":[{"title":"Default Title","offer_id":53342531584213,"sku":"CLB1010","price":134.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0622\/8466\/0949\/files\/CHECK-VALVES-2.jpg?v=1772652615","url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-1x1-inline-check-valve-npt-female-inlet-outlet","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}