Brand: Emerson-Fisher

Emerson Fisher’s Type R600 Series second-stage regulators are UL listed designed to reduce the outlet pressure from a first-stage regulator in domestic installations, usually 10 psig. Type R642 is designed for Two-Stage domestic applications up to 900,000 BTU per hour and contains a high performance relief valve and a large 3/4-inch screened vent to limit downstream pressure to less than 2 psig in an overpressure situation as required by NFPA 58.

• Improved Regulation: Emerson-Fisher’s large molded fabric-reinforced diaphragm and spring assisted vent stabilizer deliver accurate, stable regulation
• Superior Overpressure Protection – The combination of a high capacity relief valve and large vent provide overpressure protection which exceeds UL standards – when used in conjunction with a Type R622 or R652 the two-stage system will limit the downstream pressure from the second-stage to 2 psig (0,14 bar) even in a double failure situation
• Easy System Checks: 1/8 inch NPT inlet and outlet gauge taps orificed to a number 54 drill sized are easily accessible for gas system checks.
• Corrosion-Resistant: Added corrosion resistance with an internal and external coating process for all castings prior to painting, stainless steel relief valve spring and retainer and a non-corrosive relief valve seat
• Positive Drainage: When installed properly with the spring case pointed down the Fisher Positive Drainage design allows any moisture formed in the spring case to drain out eliminating the problems with corrosion and freezing of the water in the spring case

Specs:

• Type: R642-DFF
• Inlet: 3/4 in. FNPT
• Outlet: 3/4 in. FNPT
• Material: Aluminum
• Inlet Connection: 3/4 in. FNPT
• Outlet Connection: 3/4 in. FNPT
• Material: Aluminum
• Maximum Inlet Pressures: 10 psig (0,69 bar)
• Emergency Inlet Pressure: 50 psig (3,4 bar)
• Outlet Pressure Ranges: 9 to 13 inches w.c. / 22 to 32 mbar spring range
• Capacity: 900,000 BTU
• Vent Size: 3/4 NPT screened
• Temperature Capabilities: -20° to 160°F (-29° to 71°C)
• Certifications: UL, CRN
• Color: Palm green, for easy identification