This is a Johnson Controls MP843E MP8000 series pneumatic valve actuator. It features a 50 sq in effective diaphragm area, a 3/4-inch stroke length, and a 9 to 13 psi spring range with a maximum control pressure of 25 psi. Designed for spring return action in hot/chilled water control applications.
We have inspected this item and we do not have the capability to install the unit to fully test it. This unit has not been functionally tested with pneumatic pressure.
Defects Noted: It exhibits minor cosmetic scuffs and scratches along the flange edges and housing from handling/storage. It may also be missing some hardware.
Please refer to the photos for more information.
This unit only includes what is photographed in the listing.
Technical Specs
| Item | Pneumatic Valve Actuator |
| Application | Control of Hot/Chilled Water |
| Spring Range Minimum | 9 psi |
| Spring Range Maximum | 13 psi |
| Stroke | 3/4 in |
| Effective Diaphragm Area | 50 sq in |
| Compatible Valve Type | Globe |
| Air Connection Size | 1/4 in |
| Air Connection Type | Barbed Hose |
| Control Pressure - Maximum | 25 psi |
| Valve Action | Normally Open |
| Return Action | Spring Return |
| Stem Material | Stainless Steel |
| Housing Material | Carbon Steel |
| Diaphragm Material | EPDM |
| Spring Material | Chrome-Silicon Steel |
| Yoke Material | Steel |
| Includes Mounting Kit | Valve Mounting Kit Not Included |
| Specific Valve Action | Spring Return Up |
| Includes Positioner | Positioner Not Included |
| Operating Temperature - Minimum | -20 °F |
| Operating Temperature - Maximum | 150 °F |
| Overall Width | 11-13/16 in |
| Overall Length | 14-1/4 in |
| Manufacturer Series | MP8000 |
| Manufacturer Part Number | MP843E |