1-1/4" Brass Circulator Flange with Ball Valve, and Drain, Sweat

1-1/4" Brass Circulator Flange with Integral Ball Valve and Drain – Built for Demanding Hydronic Systems

The 1-1/4" Brass Circulator Flange with Ball Valve and Drain is a time-saving, high-performance solution for isolating circulator pumps in hydronic heating applications. Constructed from heavy-duty forged brass, this all-in-one valve assembly is designed to simplify installation, improve serviceability, and reduce the risk of leaks at critical connection points.

Precision-Made for Hydronic Efficiency

Engineered to combine multiple functions into a single component, this flange features a full-port ball valve for flow control, an integrated hose drain for fast system purging or maintenance, and an adjustable packing gland for in-field service. Its one-piece design minimizes the number of joints and fittings required, which means fewer potential leak paths and faster installation.

Professional-Grade Features

• Forged Brass Body – Delivers strength and corrosion resistance in high-pressure systems.
• Full-Port Ball Valve – Maintains unrestricted flow to ensure optimal circulator performance.
• Built-In Hi-Flow Drain – Facilitates efficient purging and draining during service.
• Blowout-Proof Stem – Enhances safety and structural integrity under pressure.
• Uni-Body Design – Reduces installation time and eliminates multiple fitting connections.
• Conical Inlet Geometry – Improves flow characteristics and minimizes turbulence.
• Serviceable Packing Gland – Allows for future adjustment and maintenance without disassembly.

Technical Specifications

• Nominal Size: 1-1/4"
• Connection Type: Sweat x Flange (C x Flange)
• Port Type: Full port
• Max Pressure: 600 PSI WOG (non-shock)
• Max Temperature: 250°F
• Construction: Forged brass with PTFE seat
• Warranty: Manufacturer's limited lifetime

Installation Notes

Designed for integration with 1-1/4" circulator pumps and compatible hydronic piping, this flange simplifies installation and future maintenance. Proper alignment and torque are essential when fastening to the pump body. For best results, follow all applicable plumbing codes and consider using with dielectric isolation as needed. Professional installation is recommended to ensure performance and code compliance.

Contractor Benefits

By replacing multiple fittings and valves with a single flange assembly, this product can reduce installation time by up to 45 minutes and eliminate up to five leak-prone joints. It’s an ideal choice for new installations, retrofits, or when upgrading system efficiency and serviceability is a priority.