Flow Control Valves
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This page explains how Stem/Actuator is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.
The stem/actuator is the mechanical interface that transmits motion from the valve operator to the closure element, enabling flow control.
Technical details and manufacturing context for Stem/Actuator
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Nominal Size | 15–600 mm | Common range for industrial valvesISO 6708 |
| Operating Temperature | -40–85 °C | Extended ranges require special sealsISO 5211 |
| Stroke Length | 10–500 mm | Depends on valve type and sizeISO 5211 |
| Torque Output | 50–2000 N·m | Must exceed valve breakaway torqueISO 5211 |
| Actuation Time | 5–60 s | For 90° rotation; affects control responseISO 5211 |
| Positioning Accuracy | ±0.5 % | For modulating controlIEC 60534-4 |
| Supply Voltage | 24 ±10% V DC | Other voltages available on requestIEC 60034 |
| Control Signal | 4–20 mA | Standard analog controlIEC 60381 |
| Ingress Protection | IP54–IP65 | Higher IP for outdoor useIEC 60529 |
| Body Material | WCB/CF8/CF8M | Select per media compatibilityASTM A216/A351 |
| Weight | 5–150 kg | Depends on size and material |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
| pressure: | Up to 6000 psi (413 bar) depending on stem diameter and material |
| flow rate: | Not applicable (motion transmission component) |
| temperature: | -40°C to 200°C (standard), up to 400°C with special materials |
| slurry concentration: | Up to 40% solids by weight with hardened/stellite surfaces |
Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.
Quoted from the published standard.
A practical evidence checklist for RFQ preparation and supplier evaluation.
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Manufacturer profiles associated with Stem/Actuator.
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The stem/actuator transmits motion from the valve operator (handwheel, lever, or automated actuator) to the closure element, enabling the valve to open, close, or modulate flow.
Common materials include stainless steel (304, 316), carbon steel, alloy steel, and brass. Material selection depends on media compatibility and environmental conditions.
Consider valve type, size, operating pressure, temperature, required torque, actuation time, and control signal. Verify all parameters with the manufacturer for your specific application.
Relevant standards include ISO 6708 for nominal size, ISO 5211 for mounting and torque, IEC 60534-4 for positioning accuracy, and IEC 60529 for ingress protection. Always confirm compliance with the supplier.
This component is essential for the following industrial systems and equipment:
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
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