{"product_id":"castair-1-1-2-std-250-max-psi-500-cfm-regulator-less-gauge","title":"Castair 1 1\/2\" Std. 250 Max.PSI 500 CFM Regulator less gauge","description":"\u003cp\u003eThe \u003cstrong\u003eCastair RS112\u003c\/strong\u003e is a \u003cstrong\u003e1-1\/2\" NPT standard regulator rated at 250 maximum PSI and 500 CFM\u003c\/strong\u003e, sold without a gauge. The asterisk in the part number (*RS112) indicates this is the no-gauge configuration — the gauge port is present if you want to add one, but the unit ships without an installed gauge. At 500 CFM, this is a high-flow regulator designed for large industrial air supply headers, trunk lines, or main system pressure reduction — not for small shop drop-leg applications. If you need to regulate pressure on a main supply header feeding multiple stations at high volume, this is the regulator for that job.\u003c\/p\u003e\n\n\u003ch2\u003eWhere This Regulator Belongs\u003c\/h2\u003e\n\u003cp\u003eThe RS112 is at the top of Castair's standard regulator lineup. Put it in context:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-1\/2\" body, 500 CFM:\u003c\/strong\u003e This flow capacity matches the output of large rotary screw or duplex piston compressors — machines in the 30–60+ HP range pushing 100–200+ CFM at the compressor. A 1-1\/2\" regulator on a header feeding six to twelve stations handles the aggregate flow without becoming the restriction in your system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e250 PSI maximum:\u003c\/strong\u003e Rated for full system pressure, not just regulated downstream pressure. You can install this directly on a 200 PSI rated compressor outlet header without concern about the regulator becoming a failure point under pressure spikes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo gauge (*) configuration:\u003c\/strong\u003e Appropriate where you have a gauge panel downstream, where you are monitoring pressure at the point of use rather than at the regulator, or where a gauge at this location would be inconvenient or redundant. If you want a gauge at the regulator, ask about the RS112 with gauge or add one to the gauge port.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCastair Regulator Lineup — Sizing Reference\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eC-RE14\u003c\/strong\u003e — 1\/4\" Mini, 150 PSI max, 38 CFM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eC-RS12\u003c\/strong\u003e — 1\/2\" Std, 250 PSI max, 104 CFM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eC-RS34\u003c\/strong\u003e — 3\/4\" Std, 250 PSI max, 162 CFM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eC-RS10\u003c\/strong\u003e — 1\" Std, 250 PSI max, 162 CFM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRS114 (*)\u003c\/strong\u003e — 1-1\/4\" Std, 250 PSI max, 400 CFM — no gauge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRS112 (*) — this unit\u003c\/strong\u003e — 1-1\/2\" Std, 250 PSI max, 500 CFM — no gauge\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you are sizing a regulator for a new installation, match the pipe size and CFM to your expected demand at that point in the system. The RS112 is appropriate for main headers in large facilities. A smaller 3\/4\" or 1\" regulator is correct for drop-leg or individual station use.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInstall with airflow direction per the regulator body arrow\u003c\/li\u003e\n\u003cli\u003eMount with the adjustment knob accessible for pressure setting\u003c\/li\u003e\n\u003cli\u003eCastair recommends using a 5-micron particulate filter (FS112 or similar) upstream of any regulator to prevent debris from affecting the poppet and seat\u003c\/li\u003e\n\u003cli\u003eGauge port location allows field installation of a gauge if needed after installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e RS112* (no-gauge configuration)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet\/Outlet Size:\u003c\/strong\u003e 1-1\/2\" NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Inlet Pressure:\u003c\/strong\u003e 250 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow Rating:\u003c\/strong\u003e 500 CFM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGauge:\u003c\/strong\u003e Not included (gauge port present)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Cast Air\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Buy From OEM Diagnostic Tools?\u003c\/h3\u003e\n\u003cp\u003eCastair air system components shipped from our warehouse. Free shipping on qualifying orders. Free tech support at \u003cstrong\u003e866-217-0063\u003c\/strong\u003e. Full Castair manufacturer warranty. We can help you size the correct regulator for your system if you call with your CFM and pipe size requirements.\u003c\/p\u003e\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":53342596235477,"sku":"RS112*","price":572.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0622\/8466\/0949\/files\/CastairFlltersElementsRegulatorsLubricators.jpg?v=1772652878","url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-1-1-2-std-250-max-psi-500-cfm-regulator-less-gauge","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}