Mcdonnell Miller 110192 Pressure Reducing Valve

Product Description

The MCDONNELL MILLER 110192 is a combination dual unit pressure reducing valve designed for hydronic heating systems. It integrates a pressure reducing valve and a relief valve in a single brass body, filling the system to a preset pressure for consistent, stable operation. The valve ships with a factory-set pressure of 12 psi and handles inlet pressures up to 125 psi, with an outlet pressure range of 10 to 25 psi. The 0.5-inch threaded connection fits standard residential and light commercial piping. Licensed plumbers and HVAC technicians install this valve on closed-loop hot water heating systems to maintain correct system fill pressure and provide overpressure protection in one compact assembly.

The 110192 is suited for residential and light commercial hydronic heating applications including hot water boiler systems. The brass construction and 225 degrees F maximum temperature rating make it appropriate for typical boiler loop service conditions. The combination design reduces installation time by eliminating the need for a separate relief valve on qualifying systems. Where local codes permit a dual-function valve, this unit simplifies the fill and protection assembly at the system entry point.

Key Features

• Combination unit: integrates pressure reducing valve and relief valve in one body
• Factory preset at 12 psi with an outlet range of 10 to 25 psi
• Accepts inlet pressures up to 125 psi
• Rated to 225 degrees F maximum, suitable for hot water boiler loops
• Brass construction for corrosion resistance in hydronic systems
• 0.5-inch threaded connection for straightforward in-line installation

Compatibility

Designed as an OEM-style replacement or new-installation fitting for residential and light commercial hydronic heating systems requiring a combined pressure reducing and relief valve at the system fill connection.

Installation Notes

Installation should be performed by a licensed plumber or HVAC technician in accordance with local plumbing and mechanical codes, including applicable IFGC and IPC requirements. Shut down the boiler and relieve system pressure completely before removing any existing valve or making connections. Use thread sealant rated for potable or hydronic service on all threaded joints. Verify the factory-set outlet pressure is appropriate for the system design before restoring system fill and returning the boiler to service.

Technical Specifications

• Size: 0.5 inches
• Connection Type: Threaded
• Pressure Set Point: 12 psi
• Outlet Pressure Range: 10 to 25 psi
• Max Inlet Pressure: 125 psi
• Max Temperature: 225 degrees F
• Material: Brass
• Application: Heating

Standard Information

• Brand: MCDONNELL MILLER
• Manufacturer Part Number: 110192