Stainless Steel Needle Valve – Technical Data Sheet
Size: DN15 | Pressure: PN40 | Connection: NPT with Nipples
Item | Specification |
Product Name | Needle Valve, Integral Bonnet, Non‑rotating Stem |
Nominal Size | DN15 (1/2″) |
Pressure Rating | PN40 (4.0 MPa / 40 bar / 580 psi) |
Connection Type | Female NPT (both ends) c/w Nipples – two stainless steel male NPT nipples included (threaded both ends) |
Nipple Specification | 1/2″ NPT male × 1/2″ NPT male, length ~50–80 mm (as specified) |
Body Material | Stainless Steel (SS304 / SS316) |
Stem Tip | Metal‑to‑metal (sharp needle) or soft tip (PTFE/PEEK) optional |
Packing | PTFE or Grafoil (graphite) |
Handle Type | Phenolic knob or metal T‑handle |
Temperature Range | -29°C ~ +200°C (PTFE packing) / -29°C ~ +400°C (graphite packing) |
Applicable Media | Water, oil, gas, steam, chemicals, instrumentation fluids |
Component | Material (Standard) | Optional Material |
Body | SS316 (forged) | SS304, Monel, Hastelloy |
Stem | SS316 (rolled threads) | SS316 with Stellite tip, Monel |
Stem Tip | Integral 316 (sharp angle) | PTFE, PEEK, Vespel |
Packing | PTFE (chest) | Flexible graphite, Grafoil |
Packing Nut | SS304 / SS316 | – |
Handle | Phenolic black knob | SS T‑handle, lockable handle |
Nipples (included) | SS316 seamless tube, NPT male both ends | SS304, length custom |
Gland / Bonnet | SS316 (integral or threaded) | – |
Dimension | mm (approx.) | inch (approx.) |
End Connection (valve) | 1/2″ NPT female | – |
Overall Length (valve body) | 65 – 80 | 2.56 – 3.15 |
Height (handle up) | ~110 – 130 | – |
Hex flats (body) | 22 mm (AF) | 7/8″ |
Panel mounting (optional) | 35 mm centre distance | – |
Weight (valve only) | ~0.3 – 0.5 kg | ~0.7 – 1.1 lbs |
Weight (with 2 nipples) | ~0.6 – 0.9 kg | – |
Note: Nipple length is typically 50 mm (2″) each unless specified otherwise.
Parameter | Value |
Cv (full open) | ~0.8 – 1.2 (depending on orifice) |
Orifice diameter | 6 mm (typical for DN15 needle valve) |
Maximum working pressure | 4.0 MPa (PN40) at ambient temperature |
Temperature derating | Reduce pressure by 1% per °C above 200°C (for PTFE packing) |
Leakage rate | Zero detectable leakage (metal seat) per API 598 |
Test | Standard / Requirement |
Hydrostatic shell test | 1.5 × PN40 (6.0 MPa) – no leakage |
Seat test (high pressure) | 1.1 × PN40 (4.4 MPa) – zero leakage |
Low pressure seat test | 0.6 MPa – zero leakage (bubble‑tight) |
Material traceability | EN 10204 3.1 (optional) |
Marking | Body marked: DN15, PN40, SS, flow direction arrow (if applicable) |
Parameter | Value |
Thread type | NPT male (ASME B1.20.1) |
Size | 1/2″ NPT both ends |
Material | SS316 seamless tube |
Length | 50 mm standard (custom available) |
Hex flat | 22 mm (AF) |
Wall thickness | Sch 40 or Sch 80 (as specified) |
Nipples are pre‑wrapped with PTFE tape or supplied without tape per customer request.
Please specify:
Notes:
GUATANTEE:
SAVVY VALVES is committed to delivering exceptional product quality and worry-free after-sales service. Our valves are guaranteed to provide a minimum service life of 12 months, during which we will supply all necessary spare parts and detailed maintenance instructions free of charge. Within the warranty period, if any non-human-induced damage occurs, we will replace components at no cost and provide professional technical support. After the warranty expires, customers only need to pay for the cost of spare parts, while still benefiting from discounted maintenance services. Our goal is to help clients reduce operational costs and enhance production efficiency through reliable quality and comprehensive after-sales support. Whether for technical inquiries or maintenance needs, our expert team will respond promptly to ensure your valve system maintains optimal performance at all times.
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