- The ES prefix identifies single-acting spring-return operation in the EL-O-Matic E Series.
- The documented configuration uses L1 travel stops and clockwise spring-to-close action.
- The published matrix does not define the supplied “L” option, so nameplate confirmation is mandatory.
ES0350.M1A05L.27N0 is an Emerson EL-O-Matic E350 pneumatic valve actuator designed for spring-return operation of a quarter-turn valve.
Its supported code positions define metric ISO construction, L1 travel stops, spring-to-close rotation, a valve-shaft insert, and no local visual indication.
Before installation or replacement, verify the full nameplate, the unexplained “L” option, valve torque and interface, shaft orientation, pneumatic tubing, and required fail action.
Availability, condition, price, and shipping time for ES0350.M1A05L.27N0 are confirmed during quotation.
Emerson ES0350.M1A05L.27N0 Pneumatic Valve Actuator Manuals, Product Family, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Match the documented metric ISO valve flange and insert to the installed valve stem.
- Confirm that the assembly orientation produces the required clockwise fail-close movement.
- Keep the actuator aligned with the valve to avoid side loading of the drive interface.
- Connect the supply to the spring-return port arrangement shown in the Emerson manual.
- Select tubing with regard to run length so the actuator can move as intended.
- Isolate pneumatic and electrical energy before installation, adjustment, or disassembly.
- The L1 execution limits outward piston movement through the end-cap stop bolts.
- Adjust travel only after the actuator has been mounted to the valve.
- Secure the locknuts and covers after the required valve position has been established.
- Spring-return automation of quarter-turn ball valves.
- Fail-position operation of quarter-turn butterfly valves.
- Pneumatic actuation of quarter-turn plug valves.