Purge System
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This page explains how Vent/Exhaust Valve is classified within Chemical Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.
A valve designed to release gases or vapors from a purge system to maintain pressure balance and prevent overpressure.
Technical details and manufacturing context for Vent/Exhaust Valve
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Nominal Diameter | 15–100 mm | Common sizes for purge systemsISO 6708 |
| Operating Temperature | -20–150 °C | Seat material limits upper rangeISO 5211 |
| Leakage Rate | ≤0.01 % | Class VI seat leakageISO 5208 |
| Flow Coefficient (Cv) | 5–120 m³/h | Depends on size and trimISO 6358 |
| Body Material | CF8M | Stainless steel for corrosion resistanceASTM A351 |
| Seat Material | PTFE | Chemical compatibilityASTM D4894 |
| Connection Type | Flanged | ANSI or DIN flangesISO 7005 |
| Actuation Type | Pneumatic | Spring return fail-safeISO 5211 |
| Supply Voltage | 24 ±10% V DC | For solenoid pilotIEC 60038 |
| Enclosure Rating | IP65 | Dust-tight and water-jet protectedIEC 60529 |
| Weight | 5–50 kg | Depends on size and actuator |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
Commonly used trade names and technical identifiers for Vent/Exhaust Valve.
This component is essential for the following industrial systems and equipment:
| pressure: | 0 to 10 bar (g) |
| flow rate: | Up to 500 m³/h |
| temperature: | -20°C to 150°C |
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.
2 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.
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A practical evidence checklist for RFQ preparation and supplier evaluation.
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The primary function is to release gases, vapors, or air from the purge system to regulate internal pressure, prevent overpressure, and maintain system integrity. It opens when pressure exceeds a set threshold or during purging, and closes when pressure normalizes.
The directory reference ranges are -20 to 150 °C for operating temperature. However, actual limits depend on the specific model and seat material; verify with the manufacturer.
The body is made of stainless steel (CF8M per ASTM A351), and the seat is PTFE (ASTM D4894) for chemical compatibility. These materials are listed in the directory; confirm suitability for your specific chemicals with the supplier.
The valve is pneumatically actuated with a spring return fail-safe mechanism (ISO 5211). In case of air supply loss, the valve returns to its safe position. The solenoid pilot operates on 24 V DC ±10% (IEC 60038). Verify the fail-safe position (open or closed) with the manufacturer.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
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