Honeywell Pneumatic Fail-Safe Spring Return - MP953C1489/U

The Pneumatic Fail-Safe Spring Return is a uniquely dynamic product from Honeywell's range of industrial automation equipment. It is a controller that boasts a dual-barbed fitting, compatible with both a 5/32-inch O.D. and 1/4-inch O.D. plastic tubing. Providing direct acting control from 4 psi to 11 psi, this product is equipped with a 1 1/2 inch stroke.

One of its distinguished features is the inclusion of a rolling diaphragm, designed to ensure long life and low hysteresis. Its design allows for easy attachment to valves, even after the valve piping has been installed. A prominent feature of this product is the slide lock, which allows users to engage it effortlessly with the valve stem, offering either direct or reverse action control.

Do note that this controller does not come with a positive positioner. Regardless, it operates efficiently in extreme conditions, capable of weathering temperatures from 0 F all the way up to 140 F (or -18 C to 60 C). Honeywell's Pneumatic Fail-Safe Spring Return is truly an excellent control system solution that combines versatility, robustness, and convenience in one package.