PI391 | Extension Ring 4x4x1-1/2in | DiversiTech Pressure Regulator Setting_-0.02IN Its normally closed (N/C) configuration

Its normally closed (N/C) configuration allows for precise fluid flow regulation

With its compact design and powerful motor

Engineered with NPT threads for secure connections

The switch is responsive to temperature changes

This 56FR motor is designed to deliver exceptional performance in demanding environments

PI391 | Extension Ring 4x4x1-1/2in | DiversiTech Pressure Regulator Setting_-0.02IN Its normally closed (N/C) configurationDiversitech's Extension Ring (PI391) is a 4x4x1 1 2 inch extension for compatible HVAC systems. This extension ring offers a sturdy construction and efficient performance, making it a reliable addition to industrial and commercial applications. With its compact design, it can easily fit into tight spaces, ensuring seamless integration with existing equipment. The Devco PI391 Extension Rings, 4 in. length, 4 in. width, 1 1 2 in. depth, 21. 0 cubic in.