DN15-PN64-Ferrule Needle Valve
Description
DN15 – PN64 – Ferrule Needle Valve
Technical Data Sheet
1. General Information
| Item | Description |
|---|---|
| Valve Type | Needle Valve |
| Nominal Size | DN15 (1/2 inch; ferrule size typically 12mm or 1/2″) |
| Pressure Rating | PN64 (64 bar / 6.4 MPa) |
| End Connection | Twin Ferrule / Double Ferrule (both ends) |
| Body Material | Stainless Steel 316 (SS316) as standard; 304 / alloy steel optional |
| Operation | Manual with handle or handwheel |
| Application | Instrumentation lines, sampling systems, flow regulation or shut-off for high-pressure gas or liquid lines |
2. Design & Manufacturing Standards
| Standard | Description |
|---|---|
| Design Code | ISO 17292 / Referencing API 6D and ASME B16.34 (needle valve section) |
| Ferrule Connection Dimensions | ISO 8434-1 / DIN 2353 / GB/T 3733 (twin ferrule) |
| Body Configuration | Straight pattern or angle pattern (as required) |
| Pressure-Temperature Rating | ASME B16.34 |
| Inspection & Testing | API 598 / ISO 5208 |
| Nut Thread Standard | UNF or metric thread (ferrule nut) |
| Packing Material | PTFE / Graphite / Graphite + PTFE |
3. Main Materials (Typical)
| Component | Standard Material | Optional Materials |
|---|---|---|
| Body | Stainless Steel 316 / 316L | Stainless Steel 304, Alloy Steel 4140, Hastelloy |
| Stem | Stainless Steel 316 | SS316 hard chrome plated, 17-4PH |
| Stem Packing | PTFE | Flexible graphite, PTFE+graphite, PEEK |
| Stem Tip | Needle type (sharp edge or blunt), SS316 | Hardfaced (Stellite) |
| Ferrule (front & back) | Stainless Steel 316 | Stainless Steel 304, Alloy Steel |
| Ferrule Nut | Stainless Steel 316 | Stainless Steel 304 |
| Handle / Handwheel | Stainless steel or aluminum alloy | Carbon steel chrome plated |
| Fasteners | Stainless Steel A193 B8 | Alloy Steel B7 |
4. Outline Dimensions & Weight (Typical values – may vary by manufacturer)
| Dimension Parameter | Value (Straight pattern, twin ferrule) |
|---|---|
| Valve Length (end-to-end) L | Approx. 65 – 85 mm (depending on design) |
| Ferrule Tube O.D. | 12 mm (common for DN15) or 1/2″ (12.7 mm) |
| Overall Height (handwheel) H | Approx. 70 – 90 mm (higher when handwheel raised) |
| Handwheel Diameter | Approx. 40 – 50 mm |
| Hex Size (body) | Approx. 22 mm |
| Valve Weight | Approx. 0.3 – 0.5 kg |
⚠ Dimensions above are typical references. Final dimensions to be confirmed with manufacturer’s drawing.
5. Pressure-Temperature Rating (Stainless Steel 316 body)
| Temperature (°C) | Max. Working Pressure (bar) | Remarks |
|---|---|---|
| -20 ~ 38 | 64 (PN64 rating) | Ambient |
| 100 | 56 | |
| 150 | 48 | |
| 200 | 42 | |
| 250 | 36 | |
| 300 | 28 | |
| 350 | 22 | |
| 400 | 16 |
Note: PN64 is the maximum allowable working pressure at ambient temperature. As temperature increases, pressure must be derated per ASME B16.34. PTFE packing has a maximum service temperature of approx. 200°C; graphite packing is required for higher temperatures.
6. Performance Data
| Parameter | Value |
|---|---|
| Pressure Rating | PN64 (64 bar @ 38°C) |
| Shell Test Pressure (water) | 96 bar |
| Seat Test Pressure (water) | 70 bar |
| Air Seat Test Pressure | 6 bar |
| Allowable Differential Pressure | Full rated pressure |
| Leakage Rate | Metal stem tip: Minimal leakage (per API 598) Soft tip (PTFE/PEEK): Zero leakage |
| Temperature Range (PTFE packing) | -20°C ~ +200°C |
| Temperature Range (Graphite packing) | -20°C ~ +400°C |
| Suitable Media | Water, oil, gas, steam, non-corrosive and mildly corrosive media |
| Flow Characteristic | Linear |
| Valve Type | Needle regulating / shut-off valve |
| End Connection | Twin ferrule – suitable for stainless steel or copper tubing |
7. Key Features
-
Needle stem tip – Provides precise flow regulation for very low flow rates
-
Twin ferrule connection – No welding required; reliable leak-tight seal; easy disassembly and maintenance
-
Stainless steel body – Excellent corrosion resistance
-
Blow-out proof stem – Ensures safety under high pressure
-
Replaceable packing – Easy online adjustment or replacement
-
Multiple stem tip options – Soft seat (PTFE/PEEK) or metal hard seat (sharp edge / blunt)
-
Bi-directional sealing – Can withstand pressure from both directions (arrow indicates recommended flow direction)
8. Installation & Operation Instructions
-
Ferrule installation – Insert tube fully into the ferrule socket. Hand-tighten the nut, then tighten with a wrench 1 – 1.25 turns from finger-tight (follow manufacturer’s instructions).
-
Flow direction – An arrow on the body indicates recommended flow direction. The valve can be used bidirectionally, but pressure drop may differ slightly.
-
Operation – Turn the handle clockwise to close, counterclockwise to open. Needle valves are designed for flow regulation; avoid long-term operation in fully closed or barely open positions.
-
Maintenance – If external leakage occurs, carefully tighten the packing nut after depressurizing. If leakage persists, replace the packing.
9. Ordering Information
Please provide the following when ordering:
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Valve size (DN15), pressure rating (PN64)
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End connection: Twin ferrule, tube O.D. (e.g., 12mm or 1/2″)
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Body material (SS316 / SS304 / other)
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Stem tip sealing type (metal needle tip / PTFE soft tip)
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Packing material (PTFE / graphite)
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Valve configuration (straight pattern / angle pattern)
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Media name, temperature, and pressure
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Additional accessories (panel mounting nut, dust cap, etc.)
