Valve position feedback starts with the real motion and control response, not a component label. Document travel, target geometry, mounting, cable routing and service access before selecting a limit switch.
Important: a limit switch does not by itself establish valve compatibility, process approval, rating, sealing or life. Source note: confirm selected-model documentation and IEC 60947-5-1 scope in the complete assembly review.
– FAQ
Part 1. What is valve position feedback?
It is a documented position signal in an assembled valve-control design. The expected motion, target event and controller response belong in the same review file.
Start from the LEMA Limit Switch product line after defining the interface.
Part 2. Which travel and target inputs should be documented?
Record travel positions, target shape, approach direction, available adjustment, mechanism clearance and the required feedback state. Add a representative drawing or sample assembly to the RFQ.
| Valve review field | Record for the supplier | RFQ |
|---|---|---|
| Valve event | Open, close or intermediate feedback objective | Yes |
| Target interface | Stem, cam or actuator geometry with travel drawing | Yes |
| Control handoff | Required controller state and cable-entry constraints | Yes |
Part 3. How should control and cable context be recorded?
Supply the control drawing, required state transition, wiring method, cable exit and route. Keep the electrical requirement connected to the mechanical event it must represent.
See the position-feedback context for another motion-review pattern.
Part 4. Which mounting and service details matter?
Review bracket geometry, adjustment path, cable clearance, inspection access and the replacement procedure. The installed valve assembly provides the only meaningful service context.
Part 5. Why does a general guide not prove model suitability?
General feedback guidance cannot prove any model’s electrical duty, environmental protection, approval or service life. Confirm required properties from selected documentation and the completed system review.
Part 6. What should be validated before release?
Validate the representative assembly for target engagement, feedback response, alignment retention, cable routing and service access. Retain the accepted configuration with the release record.
Fit Boundary: this guide structures feedback inputs; it does not certify a valve assembly or model.
Part 7. How can LEMA support an inquiry?
Use the Limit Switch product route once the valve and control details are ready.
Send a valve-feedback RFQ with motion, target, circuit, mounting and sample inputs.
## FAQ
What is valve position feedback?
It is a documented position signal in a defined valve-control assembly.
Which travel inputs belong in an RFQ?
Include positions, target geometry, approach direction, adjustment range and clearance.
How should a target be documented?
Provide its shape, path, approach direction and the representative mechanism drawing.
Does a switch alone prove valve suitability?
No. The complete assembly and selected-model documentation must be reviewed.
Which service details matter?
Document inspection, adjustment, cable access and replacement conditions.
What should be validated before release?
Validate engagement, feedback response, alignment, cable route and service access.
## References