The Fisher Type B NG is a direct-acting, spring-loaded residential gas regulator engineered for high performance and enhanced safety. It is designed to reduce pressure in a wide range of residential, commercial, and light industrial applications handling various gaseous media.
This regulator includes an integrated shut-off valve that activates under several safety conditions:
• When gas flow exceeds the normal threshold
• When outlet pressure drops below the set point (due to high demand or a line rupture)
• When inlet pressure falls below the required level (caused by network pressure loss or upstream damage)
Once the safety shut-off is triggered, the regulator must be manually reset to resume operation. The unit is factory pre-set, simplifying installation and ensuring consistency.
The Type B6 NG model is fully interchangeable with the angle-body Type B6 N, sharing the same key dimensions for seamless replacement.
Features
• Reinforced Integration?
• Two Stages of Reduction for Constant Outlet Pressures
• Compact Design
• Internal Relief
• Inlet Strainer
Specifications
Body Size
• NPS 3/4 x 1-1/4 / DN 20 x 32
Inlet Pressure Range
• 7.25 to 72.5 psig / 0,50 to 5,0 bar (1.45 to 102 psig / 0,10 to 7,0 bar) - on request
Maximum Inlet Pressure
• 72.5 psig / 5,0 bar
Outlet Pressure Range
• 3.6 to 20-inches w.c. / 9 to 50 mbar
Maximum Outlet Pressure
• 20-inches w.c. / 50 mbar
Pressure Registration
• Internal
Approximate Weight
• 2.16 to 2.21 Pounds / 0,9 to 1 kg
Temperature Capabilities
• -4° to 140°F / -20° to 60°C
• -22° to 140°F / -30 to 60°C (on request)
Additional Technical Data
• For additional technical information, contact your local Sales Office or refer to technical documentation.
Materials
• Body : Zinc/Aluminum Alloy
• Casing : Zinc/Aluminum Alloy
• Inlet Connection : Brass
• Inlet Filter : Bronze or Plastic
• Outlet Connection : Brass
• 1st Stage Plug : Nitrile
• 1st Stage Disc Orifice : Aluminum
• 2nd Stage Plug : Nitrile
• 2nd Stage Disc Orifice : Brass
• Diaphragms : Nitrile
• Vent Screen : Stainless Steel
• Vent : Plastic (option)
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