Spray Gun/Nozzle Assembly
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This page explains how Needle Valve 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.
A precision flow control valve that uses a tapered needle to regulate fluid passage through an orifice.
Technical details and manufacturing context for Needle Valve
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Nominal Diameter | DN15–DN50 mm | Common sizes for industrial applicationsISO 6708 |
| Operating Pressure | 1.0–1.6 MPa | Below 1.0 MPa the seat load is insufficientISO 5208 |
| Operating Temperature | -40–85 °C | Seal material limits the upper range |
| Flow Coefficient (Cv) | 0.1–10 Cv | Depends on orifice size and needle taper |
| Leakage Rate | ≤0.01 % of rated capacity | Class VI shutoff for metal seatsISO 5208 |
| Needle Travel | 5–20 mm | Determines fine adjustment range |
| Body Material | SS304/SS316 | SS316 for corrosive mediaASTM A276 |
| Seat Material | PTFE/PEEK | PTFE for chemical resistance, PEEK for high tempASTM D4894 |
| Connection Type | Threaded | BSP or NPT threads availableISO 228-1 |
| Weight | 0.5–5 kg | Depends on size and material |
| Ingress Protection | IP65 | For outdoor or washdown environmentsIEC 60529 |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is essential for the following industrial systems and equipment:
| pressure: | Up to 6000 psi (413 bar) depending on size and material |
| flow rate: | 0.01 to 100 GPM (0.04 to 378 LPM) depending on orifice size |
| temperature: | -20°C to 200°C (standard), up to 400°C with special materials |
| slurry concentration: | Not recommended for slurries >5% solids by volume; fine particulates may cause needle wear |
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.
12 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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A needle valve is used to precisely regulate fluid flow in industrial applications, such as controlling spray patterns and flow rates in spray guns and nozzles.
Common materials include stainless steel, brass, and PTFE. Body materials may be SS304 or SS316, and seat materials may be PTFE or PEEK, depending on the application.
Typical parameters include nominal diameters DN15-DN50, operating pressures 1.0-1.6 MPa, temperatures -40 to 85°C, and flow coefficients (Cv) from 0.1 to 10. Always verify with the manufacturer.
Signs include leakage or erratic flow, which may indicate wear on the needle or seat. Regular inspection and testing are recommended to ensure proper function.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
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