--- product_id: 40735517 title: "R622-DFF Propane 2nd Stage Regulator – LP Gas Pressure Control for Tank, 9\"-13\" WC, 3/4\" x 3/4\" FNPT, 1,400,000 BTU, Residential Regulators" brand: "emerson-fisher lp-gas equipment" price: "€ 246.81" currency: EUR in_stock: true reviews_count: 8 category: "Emerson Fisher Lp Gas Equipment" url: https://www.desertcart.com.cy/products/40735517-r622-dff-propane-2nd-stage-regulator-lp-gas-pressure-control store_origin: CY region: Cyprus --- # 1,400,000 BTU capacity 3/4" x 3/4" FNPT standard fit Built-in relief valve & screened vent R622-DFF Propane 2nd Stage Regulator – LP Gas Pressure Control for Tank, 9"-13" WC, 3/4" x 3/4" FNPT, 1,400,000 BTU, Residential Regulators **Brand:** emerson-fisher lp-gas equipment **Price:** € 246.81 **Availability:** ✅ In Stock ## Summary > 🔥 Keep your home’s flame strong and steady — never settle for weak heat again! ## Quick Answers - **What is this?** R622-DFF Propane 2nd Stage Regulator – LP Gas Pressure Control for Tank, 9"-13" WC, 3/4" x 3/4" FNPT, 1,400,000 BTU, Residential Regulators by emerson-fisher lp-gas equipment - **How much does it cost?** € 246.81 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/40735517-r622-dff-propane-2nd-stage-regulator-lp-gas-pressure-control) ## Best For - emerson-fisher lp-gas equipment enthusiasts ## Why This Product - Trusted emerson-fisher lp-gas equipment brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safety-First Engineering:** UL-listed relief valve and vent protect your system from dangerous overpressure - • **Unmatched Power Handling:** Supports whole-house propane demand up to 1.4 million BTU without pressure drops - • **Precision Pressure Control:** Maintains steady 9-13" WC output for consistent flame and equipment performance - • **Seamless System Integration:** Standard 3/4" FNPT connections ensure hassle-free installation and compatibility - • **Optimized for Two-Stage Systems:** Expertly designed to balance and stabilize pressure after first-stage regulators ## Overview The Emerson-Fisher R622-DFF is a UL-listed second-stage propane regulator engineered for residential LP gas systems. It delivers precise pressure control between 9-13 inches water column, supports up to 1,400,000 BTU for whole-house demand, and features standard 3/4" FNPT connections for easy integration. With a built-in relief valve and screened vent, it ensures safe, reliable operation by preventing pressure surges and protecting downstream equipment. Ideal for two-stage propane setups, it guarantees consistent performance across multiple appliances, eliminating weak flames and uneven heating. ## Description Product Description R600 Series second-stage regulators are Underwriters Laboratories (UL) listed designed to reduce the Outlet pressure from a first-stage regulator in domestic LP-gas (propane) systems installations. Type R622 is designed for two-stage domestic applications up to 1,400,000 BTU per hour/15,8 such. Type R622 contains a high performance Relief Valve and a large 3/4-inch Screened vent to limit downstream pressure to less than 2 PSIG/0,14 bar in an overpressure situation. Types R642 and R652 are designed in an angle body and back mounted design!!! WARNING !!! Failure to follow these instructions or to properly install and maintain this equipment could result in an explosion and/or fire causing property damage and personal injury or death. Fisher equipment must be installed, operated and maintained in accordance with Federal, state and local codes and Fisher instructions. The installation in most States must also comply with NFPA no. 54 and 58 standards. Only Personnel trained in the proper procedures, codes, standards and regulations of the LP-gas industry should install and service this equipment. BUYER AGREES THAT RESPONSIBILITY FOR PROPER SELECTION, INSTALLATION, USE AND MAINTENANCE OF ANY PRODUCT REMAINS SOLELY WITH THE PURCHASER AND END-USER. BUYER AGREES TO COMPLY WITH THE ABOVE WARNING AND ALL INSTRUCTION MANUALS, BULLETINS AND INSTALLATION GUIDES ASSOCIATED WITH THIS PRODUCT. From the Manufacturer When Your System Can’t Keep Up ***You feel it right away. Weak flame. Slow heat. Equipment that struggles when everything is running. It’s not always the appliance. It’s the regulator behind it. When pressure is off, your whole setup falls behind. The R622-DFF is engineered to restore balance, so your system runs the way it should every time you turn it on. *** Built To Handle Real Demand ***From early-morning water-heater use to full-load generator demand, your system should respond without hesitation. This high BTU-capacity regulator supports whole-house propane gas flow across residential LP setups, helping multiple appliances run simultaneously without pressure drop or performance lag. *** Smart Fit Without The Frustration ***Nothing slows a job down like the wrong products and parts. Designed with standard NPT sizing, this regulator fits into existing tank, hose, and kit configurations, helping simplify replacement and avoid mismatched connections across LPG installations. *** Protection Where It Matters Most ***Pressure spikes do more than disrupt performance. They put equipment at risk. A built-in valve and screened vent help manage excess PSI and protect downstream parts, supporting safer operation across two-stage systems, RV setups, auto changeover systems, and residential equipment. *** The Control Point Your System Relies On ***This isn’t just another part. It’s where your system either works or doesn’t. Designed for second-stage use after first-stage regulators, it helps maintain steady pressure, balanced flow, and consistent performance across home and house setups. Because when your pressure is right, you stop dealing with weak flame, uneven heat, and equipment that can’t keep up. Everything just runs the way it should. Review: Good quality - Good quality second stage regulator. Installed propane line to new generator and factory set @ 11 inches water column. Works fine from a known manufacturer. Review: no leaks - works wonderfully. definitely needed the additional parts to install. ## Features - Steady 2nd Stage Pressure Control: Reduces pressure from first-stage propane tank systems to a steady 9-13 inch WC range, helping gas equipment maintain reliable output without surges, drops, or uneven performance in residential LP setups - High Capacity for Whole House Demand: Handles up to 1,400,000 BTU, so generator, heater, water heater, and home equipment don’t fall behind during peak use, helping prevent pressure loss when multiple propane gas appliances run at once - 3/4” x 3/4” FNPT Connection Fit: Standard NPT inlet and outlet sizing integrates with common propane tank, hose, kit, and parts configurations, preventing fit issues, mismatched connections, and wasted time during replacement across LPG systems - Built-In Relief Valve & Screened Vent: UL-listed design with high-performance valve and 3/4” vent helps manage excess PSI and protect downstream equipment, supporting safer operation across propane gas regulators in two stage systems - Expertly Engineered For 2 Stage System Integration: Designed for second stage use after first stage regulators in propane systems, helping ensure proper system balance and consistent performance across RV, dual tank, and home equipment ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01N20XKTC | | Best Sellers Rank | #20,642 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #9 in Industrial Pressure Regulators | | Brand | Emerson-Fisher LP-Gas Equipment | | Date First Available | January 9, 2017 | | Is Discontinued By Manufacturer | No | | Item Weight | 1.4 pounds | | Item model number | R622-DFF | | Manufacturer | Emerson Process Management Regulator Technologies, Inc. | | Material | Metal | | Package Dimensions | 12.01 x 9.09 x 7.17 inches | | Thread Type | 10-32 | | UPC | 674788664381 674788664299 674788664398 674788664374 674788664367 | ## Product Details - **Brand:** Emerson-Fisher LP-Gas Equipment - **Item Weight:** 635 Grams - **Material:** Metal - **Thread Type:** 10-32 - **UPC:** 674788664381 674788664299 674788664398 674788664374 674788664367 ## Images ![R622-DFF Propane 2nd Stage Regulator – LP Gas Pressure Control for Tank, 9"-13" WC, 3/4" x 3/4" FNPT, 1,400,000 BTU, Residential Regulators - Image 1](https://m.media-amazon.com/images/I/71P58Ex3wIL.jpg) ## Questions & Answers **Q: Do I need this regulator and a first-stage regulator to run my Cummins 20kw generator off of 2 25 gallon propane tanks?** A: You have to know what the incoming pressure has to be on your generator. If it’s between 9-13 water columns per inch. You just need this one. The first stage reduces the psi from the tank to 11-15 pounds per square inch. So check your generator incoming pressure. **Q: can this be used on natural gas** A: As an expert in the field for over 4 decades,,,,, YES, you can use this for natural gas as long as you put an NG appliance regulator on the appliance. Not an issue since all new equipment comes with the appliance regulator. Or..... you can order the NG spring and change that. Both are easy fixes. **Q: Horizontal mounting: can the top be rotated so that with the inlet at 3 o'clock and the outlet at 9 o'clock the vent will be down at 6 o'clock?** A: That would be fine, and is actually preferred. I’m almost all cases, the vent should be placed down or horizontally to prevent blockages such bugs, leaves, etc. **Q: Will this regulator work with a 30,000 btu ventless lp heater? Also does it come with a mount?** A: Yes it will work with 30,000 lp ventless lp heater. I have one on my 30,000 ventless lp 5 brick heater and it is working great. I would recommend checking the inches of water column while heater is running wide open to make sure the regulator is supplying sufficient pressure (9-13" wc). The regulator does not come with mounting bracket,but it does come with the bolts to use for a mounting bracket ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good quality *by D***T on July 17, 2024* Good quality second stage regulator. Installed propane line to new generator and factory set @ 11 inches water column. Works fine from a known manufacturer. ### ⭐⭐⭐⭐⭐ no leaks *by R***. on August 22, 2025* works wonderfully. definitely needed the additional parts to install. ### ⭐⭐⭐⭐⭐ Value for the money *by F***T on May 25, 2025* Great secondary regulator, has held up well for 1.5 years. It is pretty large so make sure you aren't mounting it close to a wall where you won't be able to turn it down on the pipe. Was a value for the money. ## Frequently Bought Together - Emerson-Fisher LP-Gas Equipment R622-DFF 2nd Stage Regulator, 9-13" W.C Spring, 3/4" x 3/4" NPT - MCAMPAS 15 Inch Propane Regulator Copper Pigtail POL x 1/4"NPT Male Pipe Thread - Emerson-Fisher LP-Gas Equipment R122H-AAJ First Stage Compact Regulator, Non-Adjustable 10 psig Spring, 1/4" x 1/2" NPT --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.cy/products/40735517-r622-dff-propane-2nd-stage-regulator-lp-gas-pressure-control](https://www.desertcart.com.cy/products/40735517-r622-dff-propane-2nd-stage-regulator-lp-gas-pressure-control) --- *Product available on Desertcart Cyprus* *Store origin: CY* *Last updated: 2026-07-03*