DN15-PN40-NPT c/w Nipples SS Needle Valve

DN15-PN40-NPT c/w Nipples SS Needle Valve

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

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Stainless Steel Needle Valve – Technical Data Sheet

Size: DN15 | Pressure: PN40 | Connection: NPT with Nipples

Item

Specificazione

Product Name

Needle Valve, Integral Bonnet, Non‑rotating Stem

Dimensione nominale

DN15 (1/2″)

Valutazione della pressione

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)

Materiale del corpo

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

Intervallo di temperatura

-29°C ~ +200°C (PTFE packing) / -29°C ~ +400°C (graphite packing)

Applicable Media

Water, oil, gas, steam, chemicals, instrumentation fluids

  1. Main Parts & Materials (All Stainless Steel)

Component

Material (Standard)

Optional Material

Corpo

SS316 (forged)

SS304, Monel, Hastelloy

Stelo

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)

  1. Dimensions & Weight (Reference – Valve Body Only, without Nipples)

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.

  1. Design Features
  1. Non‑rotating Stem – Prevents galling and extends seat/packing life; stem moves axially without rotation.
  2. Metal‑to‑Metal Seating (Standard) – Sharp needle tip provides fine flow control and positive shut‑off (bubble‑tight).
  3. PTFE Packing – Low friction, good chemical resistance, suitable up to 200°C. Graphite packing available for high temperature.
  4. Integral Bonnet Construction – Reduces potential leak paths; robust for high‑pressure applications.
  5. Included Nipples – Valve is supplied with two stainless steel male NPT nipples for easy connection to piping or tubing.
  6. Fine Flow Regulation – Needle profile allows precise, repeatable flow adjustment from fully closed to fully open.
  1. Performance Characteristics

Parametro

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

  1. Applicazioni
  • Instrumentation panels (pressure gauges, transmitters, switches)
  • Chemical injection lines
  • Sample points
  • Bleed and vent ports
  • High‑pressure hydraulic and pneumatic systems
  • Steam tracing lines (with graphite packing)
  1. Testing & Compliance

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)

  1. Nipples Specification (Included)

Parametro

Value

Thread type

NPT male (ASME B1.20.1)

Misurare

1/2″ NPT both ends

Materiale

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.

  1. Ordering Information

Please specify:

  • Valve size: DN15 (1/2″)
  • Pressure: PN40
  • Connection: Female NPT + 2 matching male NPT nipples
  • Body material: SS316 / SS304
  • Stem tip: Metal / Soft (PTFE)
  • Packing: PTFE / Graphite
  • Handle: Knob / T‑handle
  • Nipple length: ___ mm
  • Special: Panel mounting, NACE MR0175, low‑emission packing, etc.

Notes:

  • “c/w Nipples” means the valve is supplied complete with two nipples, ready for installation.
  • For high‑temperature steam (>200°C), select graphite packing and metal stem tip.
  • Needle valves are not intended for full on/off isolation in high‑cycle applications; they are designed for flow regulation and shut‑off.
  • Confirm pressure‑temperature limits with the manufacturer for specific media.

GARANZIA:

SAVVY VALVES si impegna a fornire una qualità di prodotto eccezionale e un servizio post-vendita senza pensieri. Le nostre valvole sono garantite per una durata minima di 12 mesi, durante i quali forniremo gratuitamente tutti i pezzi di ricambio necessari e istruzioni di manutenzione dettagliate. Durante il periodo di garanzia, in caso di danni non causati dall'uomo, sostituiremo i componenti gratuitamente e forniremo supporto tecnico professionale. Dopo la scadenza della garanzia, i clienti dovranno pagare solo il costo dei pezzi di ricambio, beneficiando comunque di servizi di manutenzione scontati. Il nostro obiettivo è aiutare i clienti a ridurre i costi operativi e a migliorare l'efficienza produttiva attraverso una qualità affidabile e un supporto post-vendita completo. Che si tratti di richieste tecniche o di esigenze di manutenzione, il nostro team di esperti risponderà tempestivamente per garantire che il vostro sistema di valvole mantenga prestazioni ottimali in ogni momento.

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