Description
The Norgas Controls and Metering B42R-1/2 is a 1/2″ Internal Relief Valve (IRV) gas regulator engineered for precise downstream pressure regulation in commercial and industrial gas distribution systems. Featuring a 1/2″ x 9/16″ orifice and a 6–16″ water column (WC) spring range, this regulator delivers consistent, dependable gas pressure control across a wide range of applications.
The internal relief valve design provides an added layer of safety by venting excess downstream pressure directly through the regulator body — eliminating the need for a separate external relief valve in many installations. This compact, robust construction makes the B42R-1/2 an ideal choice for HVAC technicians, gas fitters, and mechanical contractors working on boilers, furnaces, rooftop units, and other gas-fired equipment.
Key Features
- Internal Relief Valve (IRV) design for integrated overpressure protection
- 1/2″ inlet connection for straightforward installation
- 1/2″ x 9/16″ orifice for optimized gas flow performance
- 6–16″ water column (WC) spring range for precise outlet pressure adjustment
- Compact, durable construction suited for commercial and industrial gas systems
- Eliminates the need for a separate external relief valve in qualifying installations
Specifications
- Brand: Norgas Controls and Metering
- Model / SKU: B42R-1/2
- Valve Type: Internal Relief Valve (IRV) Gas Regulator
- Inlet Size: 1/2″
- Orifice Size: 1/2″ x 9/16″
- Spring Range: 6–16″ Water Column (WC)
Typical Applications
- Commercial and industrial gas-fired HVAC equipment
- Boilers, furnaces, and rooftop unit gas trains
- Gas distribution and metering systems
- Anywhere precise downstream gas pressure regulation with internal relief is required
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