1-1/2" Isolation Flow Control Flange, Lead-Free, Thread x Flange

Bell & Gossett Check-Trol™ Flow Control Flange – Integrated Control and Isolation for Hydronic Systems

The Bell & Gossett Check-Trol™ Flow Control Flange streamlines circulator installation and maintenance by combining an isolation valve, spring check valve, and companion flange in a single compact unit. Built for hydronic heating applications, this valve assembly eliminates the need to drain the system when servicing a circulator, while also preventing unwanted gravity flow during off cycles.

With a rugged, lead-free brass body and chrome-plated finish, the Check-Trol is engineered to withstand working pressures up to 150 psi and fluid temperatures up to 200°F. This valve is a preferred solution for mechanical contractors working on residential and light commercial closed-loop systems.

Product Advantages

• Integrated Isolation & Flow Control: One body houses both a ball shut-off and a spring check, simplifying system design and installation.
• No System Drain-Down Required: Enables quick circulator removal or replacement without disrupting the entire system.
• Spring Check Valve: Automatically stops backflow and gravity circulation when the pump is off.
• Free-Floating Companion Flange: Provides easier alignment and a cleaner install, even in tight mechanical rooms.
• Lead-Free Brass Construction: Complies with potable water codes and offers long-term corrosion resistance.

Technical Specifications

• Connection: NPT x Flanged
• Nominal Pipe Size: 1-1/2 inch
• Max Operating Pressure: 150 psi
• Max Fluid Temperature: 200°F
• Material: Lead-free brass with chrome-plated finish
• Application: Compatible with many popular circulator models including Bell & Gossett ecocirc® series

Installation Notes

This flange is designed for straightforward installation in standard hydronic systems. While its features help reduce install time, it’s still best practice for licensed professionals to perform installation to ensure compliance with local codes and to maintain system integrity. Use with standard flange gaskets and bolt kits for leak-free performance.

Professional Application Insights

For Contractors: The Check-Trol is ideal for new system installs or retrofit jobs where time, space, and reliability matter. It reduces the number of joints and fittings, lowering potential leak points and saving on labor. It's also a great option for servicing existing systems without interruption to other zones.

For Facility Maintenance Teams: When system uptime matters, the ability to isolate and replace a circulator without draining makes this a valuable asset in your hydronic system design.

Summary of Features

• ? Integrated isolation and check valve functions
• ? Tool-free circulator replacement
• ? Lead-free and corrosion-resistant materials
• ? Chrome-plated for added protection and appearance
• ? Suitable for use with multiple brands and pump types

Designed to meet the demands of the professional trade, the Bell & Gossett Check-Trol Flow Control Flange delivers dependable flow control, simplified serviceability, and rugged performance in one smart design.