Honeywell Pneumatic Fail-Safe Spring Return - MP953E1418/U

This Honeywell Pneumatic Fail-Safe Spring Return is a direct acting control, operating within a pressure range of 4 psi to 11 psi and offering a 1.5 inch stroke. It boasts a robust rolling diaphragm design that ensures prolonged service life as well as minimal hysteresis for delicate control tasks.

Notable for its easy installation process, this controller can readily attach to the valve either before or after pipework assembly. Its innovative Slide Lock feature further facilitates simple engagement with the valve stem.

The control can be programmed for either direct or reverse-action output depending on the application requirements. However, it should be noted that it does not possess a positive positioner feature.

In terms of technical specifications, this controller is engineered to operate effectively within a temperature range from 0 F to 140 F (-18 C to 60 C), delivering a performance at a consistent working pressure of 10 psi. In the event of a pressure drop or interruption, the controller reverts to a fail-safe mode, responding with the in-built spring return mechanism to ensure the continuity of operations.