Description
- 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
| Unit Count | 1 Count |
|---|---|
| Part Number | R622-DFF |
| UPC | 674788664381 674788664299 674788664398 674788664374 674788664367 |
| Manufacturer | Emerson Process Management Regulator Technologies, Inc. |
| Model | R622-DFF |
| Material Type | Metal |
| Thread Style | Npt |
| Item Weight | 635 g |
| Material | Metal |
| Number Of Items | 1 |
| Thread | Npt |
Fisher Residential Second Stage Regulators
About the Manufacturer
Emerson is where technology and engineering come together to create solutions for the benefit of our customers, driven without compromise for a world in action. Emerson is committed to radically improving our process and industrial business customers’ performance with measurable results.
- Helping the world make the most use of its valuable resources
- Enabling nations to move their economies forward in a responsible way
- Empowering industries to thrive when it matters most
- Advancing the industries that are the backbone of daily life
Fisher Residential Second Stage Regulators
Compact, high-performance regulators engineered to stand the test of time.
Fisher LP residential regulators are one of the world’s most complete line of regulators for domestic applications, offering first-stage, second-stage, and integral two-stage regulators in both full size and compact options. Second-Stage regulators are Underwriters Laboratories (UL) listed regulators designed to reduce the outlet pressure from a First-Stage regulator, usually 10 psig / 0.69 bar to 11 in. w.c. / 27 mbar, in domestic installations. Vents are screened with standard orientation over the inlet, but other orientations are available. Fisher brand Second- Stage regulators are painted palm green for easy identification.
Types R222, R622, R642 and R652 are equipped with a stainless steel inlet screen to reduce the amount of debris entering the regulator and have a temperature rating of -20 to 160°F / -29 to 71°C, but have passed Fisher internal testing for lockup, relief start-to-discharge and reseal down to -40°F / -40°C. Type HSRL is an UL listed regulator designed for light commercial applications up to 2,600,000 BTU per hour / 29.3 SCMH. It utilizes a high strength cast iron body and a 3/4 in” NPT drip lip vent design.
Types R622E and R652E, 2-psi Service Regulators, are designed for 2-psi LPG Regulator Systems and listed by Underwriters Laboratories (UL). These units are installed downstream from a First-Stage regulator and reduce an inlet pressure of 10 psig / 0.69 bar to a nominal 2 psig / 0.14 bar outlet pressure. 2-psi Service Regulators are designed for domestic applications that supply 2 psig / 0.14 bar LPG to a line regulator located inside the building. Fisher brand Types R622E and R652E are painted green with a white closing cap for easy identification and have a temperature rating of -20 to 160°F / -29 to 71°C, but have passed Fisher internal testing for lockup, relief start-to-discharge and reseal down to -40°F / -40°C.
- Easy installation
- Corrosion-resistant and wear-resistant materials
- High capacity
- Reliable performance
- Best overpressure protection in the industry
Learn More About Other Fisher LP Products from Emerson
Internal Valves
Primary shutoff and excess flow function for bobtail/transport trucks, stationary storage tanks, and in-line installations.
Emergency Shutoff Valves
Designed for in-line installations to shut off gas in the event of a hose rupture or piping break at the transfer area.
Large Relief Valves
Typically installed in vapor/liquid applications on ASME tanks, transport trucks and stationary tanks, to provide pressure relief in an over-pressure situation.
Back Check Valves
Allow flow in only one direction and are normally closed. They are installed in liquid filling connections on stationary storage tanks, bobtail delivery trucks and liquid transfer lines.
Excess Flow Valves
Close upon excessive discharge of liquid after a break in hose or piping, protecting cylinder, tank and piping systems.
Globe Valves
Widely used at bulk plants to control gas flow in piping systems, at storage tanks, on trucks, and at pumps or compressors.
Angle Valves
Widely used at bulk plants to control gas flow in piping systems, at storage tanks, on trucks, and at pumps or compressors.
Transfer & Bypass Valves
Hose end valves, large filler valves and bypass valves which facilitate safe and rapid transfer between LP transport and storage tanks.
About Emerson
Emerson (NYSE: EMR), headquartered in St. Louis, Missouri (USA), is a global technology and engineering company providing innovative solutions for customers in industrial, commercial, and residential markets. Our Emerson Automation Solutions business helps process, hybrid, and discrete manufacturers maximize production, protect personnel and the environment while optimizing their energy and operating costs. Our Emerson Commercial and Residential Solutions business helps ensure human comfort and health, protect food quality and safety, advance energy efficiency, and create sustainable infrastructure.
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