Resideo D146M1032 Regulator 321042-401 this valve is equally effective

this valve is equally effective for chilled water and glycol solutions (up to 50%)

As a veteran-grade OEM replacement air filter

It can be accessed and replaced without fully removing the contactor from the mounting plate or changing the main power wiring layout

Common Questions Is the AL-181 compatible with 24V control systems

Multi-Turn Adjustment: Features a micrometer-style handwheel for 360-degree fine-tuning and accurate flow regulation

Resideo D146M1032 Regulator 321042-401 this valve is equally effectiveThe Resideo D146M1032 is a professional grade 3 4 inch differential pressure regulator designed specifically for hydronic heating systems. As a veteran requested solution for maintaining system balance, this brass bypass valve effectively eliminates excessive pump head pressure that occurrs when zone valves or thermostatic radiator valves close during low demand cycles. By redirecting flow through a dedicated bypass line, the D146M1032 regulator