{"product_id":"2nd-stage-3-4-lp-ng-10psi-regulator-b42r-df400-idf-series-models-50274a","title":"Frost Fighter 50274A 2nd Stage LP\/NG Regulator for IDF and DF400 Heaters","description":"\u003ch2\u003eSecond Stage Propane Regulator for the Two-Stage Heater System\u003c\/h2\u003e\n\n\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe first stage regulator delivers 10 PSI from the propane tank. The heater manifold tolerates only 14 in. water column. Feed it 10 PSI, and you damage the manifold regulator. The \u003cstrong\u003eFrost Fighter 50274A\u003c\/strong\u003e is a second-stage propane regulator that drops 10 PSI to 11 in. water column. This Frost Fighter 2nd stage regulator completes the pressure chain so the burner gets stable gas.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features and Benefits\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eThis Frost Fighter 2nd stage regulator has 3\/4 in. FNPT connections on both ports. The 2,000,000 BTU capacity covers every IDF and DF400 heater with room to spare.\u003c\/li\u003e\n  \u003cli\u003eA built-in internal relief valve protects the downstream system against overpressure. For installations above the regulator's relief capacity, add a separate relief valve downstream.\u003c\/li\u003e\n  \u003cli\u003eThe 50274A works on both propane and natural gas. On propane, pair it with the 50276A first stage. On natural gas at 1 to 10 PSI supply, this 2nd stage LP gas regulator is the only external regulator the heater needs.\u003c\/li\u003e\n  \u003cli\u003eFactory set at 11 in. water column. The outlet is adjustable within the low-pressure propane regulator range to match the heater's intake requirement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow the 50274A Fits the Two-Stage System\u003c\/h2\u003e\n\u003cp\u003eOn propane, the 50276A first stage regulator at the tank drops pressure from up to 250 PSI to 10 PSI. The 50274A second stage propane regulator then takes 10 PSI and brings it to 11 in. water column. As a 2nd stage LP gas regulator, the 50274A feeds the heater's manifold regulator, which sets the final burner pressure from there.\u003c\/p\u003e\n\u003cp\u003eOn natural gas, the setup depends on supply pressure. If NG supply is already at 7 to 14 in. water column, no external regulator is needed. If supply is 1 to 10 PSI, the 50274A handles the full drop on its own as a natural gas regulator. No first stage required.\u003c\/p\u003e\n\u003cp\u003eAll piping must follow CSA B149.1 in Canada or NFPA 54 in the United States.\u003c\/p\u003e\n\n\u003ch2\u003eWhich Heaters Use It\u003c\/h2\u003e\n\u003cp\u003eThis Frost Fighter 2nd stage regulator fits all IDF and DF400 heaters on propane or natural gas. Cleanflow stocks the \u003cstrong\u003e\u003ca href=\"https:\/\/cleanflow.net\/products\/frost-fighter-idf350-indirect-fired-heater-350-000-btu-h\"\u003eIDF350\u003c\/a\u003e \u003c\/strong\u003eand \u003cstrong\u003e\u003ca href=\"https:\/\/cleanflow.net\/products\/frost-fighter-idf500-indirect-fired-portable-heater-420-000-btu-h-dual-fuel-50-ft-ducting-capability-csa-etl-certified-industrial-grade\"\u003eIDF500\u003c\/a\u003e.\u003c\/strong\u003e IHS700 heaters use a different regulator system (70093B). The DF1500 uses its own manifold regulation.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n    \u003cth\u003eSpec\u003c\/th\u003e\n    \u003cth\u003eValue\u003c\/th\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eFrost Fighter Part\u003c\/td\u003e\n    \u003ctd\u003e50274A\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eType\u003c\/td\u003e\n    \u003ctd\u003e2nd stage LP\/NG regulator\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eConnections\u003c\/td\u003e\n    \u003ctd\u003e3\/4 in. FNPT inlet x 3\/4 in. FNPT outlet\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eMax Inlet Pressure\u003c\/td\u003e\n    \u003ctd\u003e10 PSIG\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eOutlet Pressure\u003c\/td\u003e\n    \u003ctd\u003e11 in. W.C. factory set\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eAdjustment Range\u003c\/td\u003e\n    \u003ctd\u003e6 to 16 in. W.C.\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eCapacity\u003c\/td\u003e\n    \u003ctd\u003e2,000,000 BTU\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eSafety\u003c\/td\u003e\n    \u003ctd\u003eInternal relief valve (limited capacity)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eOperating Temp\u003c\/td\u003e\n    \u003ctd\u003e-20 to 150 F\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eWeight\u003c\/td\u003e\n    \u003ctd\u003e2 lbs assembled\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eUPC\u003c\/td\u003e\n    \u003ctd\u003e400027002443\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eCountry\u003c\/td\u003e\n    \u003ctd\u003eUnited States\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eFits\u003c\/td\u003e\n    \u003ctd\u003eIDF and DF400 heaters on LP or NG (IHS700: use 70093B)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eCompanion (Propane)\u003c\/td\u003e\n    \u003ctd\u003e50276A 1st Stage Regulator (required for LP)\u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eBuy Second Stage Propane Regulator Online from Cleanflow\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCleanflow Utility Supply Company\u003c\/strong\u003e is an authorized Frost Fighter dealer and stocks this Frost Fighter 2nd stage regulator along with other Frost Fighter heater parts and \u003ca href=\"https:\/\/cleanflow.net\/collections\/frost-fighter\"\u003eFrost Fighter heaters and accessories\u003c\/a\u003e. \u003c\/p\u003e\n\u003cp\u003eFree shipping on orders over $199. \u003ca href=\"https:\/\/cleanflow.net\/apps\/parcelpanel-returns\/\"\u003eReturns accepted within 30 days\u003c\/a\u003e; email \u003ca href=\"mailto:info@cleanflow.ca\"\u003einfo@cleanflow.ca\u003c\/a\u003e. Ships across Canada and the USA. Call 1-866-335-1078 to confirm your heater model.\u003c\/p\u003e\n\n\u003cdiv itemscope itemtype=\"https:\/\/schema.org\/FAQPage\"\u003e\n  \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n  \u003cdiv itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\"\u003e\n    \u003ch3 itemprop=\"name\"\u003eWhat does a second stage propane regulator do?\u003c\/h3\u003e\n    \u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n      \u003cdiv itemprop=\"text\"\u003e\n        \u003cp\u003eA second stage propane regulator takes the intermediate pressure from a first stage regulator (typically 10 PSI) and drops it to the low pressure propane regulator range the heater needs, usually around 11 in. water column. Without it, the heater manifold receives more pressure than it can handle.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\"\u003e\n    \u003ch3 itemprop=\"name\"\u003eWhat pressure should a second stage propane regulator be set at?\u003c\/h3\u003e\n    \u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n      \u003cdiv itemprop=\"text\"\u003e\n        \u003cp\u003eThe 50274A ships factory-set at 11 in. water column. The adjustment range is 6 to 16 in. water column. Leave it at the factory setting unless a licensed gas technician determines a different set point for your heater.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\"\u003e\n    \u003ch3 itemprop=\"name\"\u003eDo you need a second stage regulator for natural gas?\u003c\/h3\u003e\n    \u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n      \u003cdiv itemprop=\"text\"\u003e\n        \u003cp\u003eIt depends on supply pressure. If your natural gas regulator delivers 7 to 14 in. water column, the heater takes it directly. If supply is 1 to 10 PSI, the 50274A drops it to the correct range. Propane always requires both stages.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\"\u003e\n    \u003ch3 itemprop=\"name\"\u003eWhere should a second stage propane regulator be installed?\u003c\/h3\u003e\n    \u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n      \u003cdiv itemprop=\"text\"\u003e\n        \u003cp\u003eInstall the 50274A near the heater, downstream of the first stage, with the vent pointed down. This propane gas regulator and all piping must follow CSA B149.1 or NFPA 54. The 50274A is one of the Frost Fighter heater parts a licensed gas fitter can install without modifying the heater.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\"\u003e\n    \u003ch3 itemprop=\"name\"\u003eCan I use a second stage regulator without a first stage?\u003c\/h3\u003e\n    \u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n      \u003cdiv itemprop=\"text\"\u003e\n        \u003cp\u003eOn natural gas at 1 to 10 PSI, yes. This Frost Fighter 2nd stage regulator handles the full pressure drop alone. On propane, no. Propane tank pressure reaches up to 250 PSI, far beyond the 50274A's 10 PSI maximum inlet. You need the 50276A first stage at the tank.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Frost Fighter","offers":[{"title":"Default Title","offer_id":67739728085356,"sku":"50274A","price":341.25,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1016\/5405\/files\/2ndStageRegulator_0bbdccb5-3fd8-4d9e-aa31-35dff39d0013.webp?v=1792164224","url":"https:\/\/cleanflow.net\/products\/2nd-stage-3-4-lp-ng-10psi-regulator-b42r-df400-idf-series-models-50274a","provider":"Cleanflow","version":"1.0","type":"link"}