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

Stainless Steel Needle Valve – Technical Data Sheet

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

Item	Specifikace
Product Name	Needle Valve, Integral Bonnet, Non‑rotating Stem
Jmenovitá velikost	DN15 (1/2″)
Jmenovitý tlak	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)
Materiál těla	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
Teplotní rozsah	-29°C ~ +200°C (PTFE packing) / -29°C ~ +400°C (graphite packing)
Applicable Media	Water, oil, gas, steam, chemicals, instrumentation fluids

Main Parts & Materials (All Stainless Steel)

Component	Material (Standard)	Optional Material
Tělo	SS316 (forged)	SS304, Monel, Hastelloy
Zastavit	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)	–

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.

Design Features

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

Performance Characteristics

Parametr	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

Aplikace

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)

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)

Nipples Specification (Included)

Parametr	Value
Thread type	NPT male (ASME B1.20.1)
Velikost	1/2″ NPT both ends
Materiál	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.

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.

ZÁRUKA:

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