Actaris 11J28R05121 Gas Regulator

Description:

The Actaris B-42 125 AG / Trane 11J28R05121 gas regulator is used in natural gas distribution systems to reduce inlet gas pressure and provide stable outlet pressure for commercial and industrial gas-fired equipment. Commonly installed in Trane commercial HVAC systems, gas heating equipment, boilers, rooftop units, and industrial gas distribution systems requiring a 3/4 in. NPT pressure regulator. Maintenance teams, HVAC service technicians, gas utility contractors, and system integrators use this gas regulator for replacement, retrofit, preventive maintenance, and gas system repairs.

Applications:

The Actaris B-42 125 AG gas regulator is designed to deliver accurate pressure regulation while protecting downstream gas-fired equipment from pressure fluctuations. It is commonly used in commercial HVAC systems, industrial heating equipment, boilers, rooftop units, manufacturing facilities, and natural gas distribution installations where reliable gas pressure control and safe system operation are essential.

Technical Specifications:

• Manufacturer Part Number (MPN): 11J28R05121
• Manufacturer: Actaris (Trane OEM)
• Product Type: Gas Pressure Regulator
• Model: B-42 125 AG
• Connection Size: 3/4 in. NPT
• Regulator Series: B42 Series
• Maximum Inlet Pressure: 125 PSIG
• Maximum Emergency Inlet Pressure: 300 PSIG
• Outlet Pressure Range: 5 in. W.C. to 5 PSIG
• Regulator Type: Spring-Loaded Gas Pressure Regulator
• Valve Body Material: Cast Iron
• Valve Seat Material: Buna-N / Silicone
• Diaphragm Area: 12.6 sq. in.
• Vent Connection: 3/4 in. or 1 in. NPT
• Function: Reduces and Regulates Natural Gas Pressure
• Compatible Equipment: Trane Commercial HVAC Equipment, Boilers, Rooftop Units, and Industrial Gas Systems
• Application Environment: Commercial HVAC, Industrial Heating Systems, Natural Gas Distribution, and Gas-Fired Equipment

Common Replacements:

• Itron B42R Gas Regulator
• Fisher 627 Series Gas Regulator
• Maxitrol 325 Series Gas Regulator