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Needle Valves
Alco N Series High-Pressure Needle Valve, 1/4" Female NPT, 6000 psi, SS316, N2NS
Alco

Alco N Series High-Pressure Needle Valve, 1/4" Female NPT, 6000 psi, SS316, N2NS

Mfr. part no.
N2NS
SKU
NV-UK-06K-FF-04

Specifications

Series N Series
Maximum Pressure 6000 psi @ 38°C
Temperature Range -40 to +230°C
Connection Size 1/4" Female NPT
Valve Pattern Straight / inline
Body Material 316 Stainless Steel
Packing Material RTFE
Orifice Size 5 mm
Stem Tip Hardened non-rotating 17-4PH

Key Features

  • Rated to 6000 psi at 38°C
  • 1/4" Female NPT end connection
  • Compact SS316 straight-pattern body
  • Metal-to-metal seat for positive shutoff
  • Hardened non-rotating tip helps reduce wear
  • RTFE packing with back-sealing stem
  • Made in UK.

Description

The Alco N2NS is a 1/4" female NPT high-pressure needle valve rated to 6,000 psi at 38°C, with an operating temperature range of -40 to +230°C. Its SS316 straight-pattern body is fitted with a metal-to-metal seat, hardened 17-4PH non-rotating tip, RTFE packing and a stainless steel T-bar handle. The valve provides precise flow regulation and secure isolation in gauge lines, instrument panels, sampling systems and high-pressure process tubing.

Applications

  • Gauge and pressure transmitter isolation
  • Sampling panels and analyzer lines
  • Chemical injection and dosing skids
  • Hydraulic and pneumatic control lines
  • High-pressure process isolation and throttling

Documents

  • Alco Instrumentation Valves — Catalog

    PDF, 7.1 MB

  • Alco N Series Needle Valves — Datasheet

    PDF, 153 KB

Cross-reference

The closest equivalents from other brands, with the differences stated so you can check before you order.

HOKE (Crane Instrumentation & Sampling) 2219F4Y

2219 Series Severe Service Needle Valves — Forged Body, Union Bonnet

Hoke 2219F4Y — 2219 Series severe-service needle valve, 1/4 in female NPT, 316 stainless steel forged body with union bonnet, 6,000 psig at 70°F (414 bar at 21°C), 0.250 in (6.4 mm) orifice, Cv 1.09, Grafoil packing, non-rotating 316 stainless steel stem tip. Listed here as a cross-reference, not as an identical part. The Alco N2NS offered on this page matches it on connection size, body material and 6,000 psi rating at the same 38°C reference temperature, but it is the smaller-bore valve — 5 mm orifice against 6.4 mm — so flow capacity is lower. Packing is RTFE rather than Grafoil, which sets the continuous service ceiling at 230°C against the Hoke valve's 538°C at reduced pressure, and the stem tip is hardened 17-4PH rather than 316 stainless steel.

Parker Hannifin (Instrumentation Products Division) 4F-U6LR-T-SS

U Series Needle Valves — Union Bonnet, 6,000 PSI Maximum (Catalog 4110-NV)

Parker 4F-U6LR-T-SS - U Series union-bonnet needle valve, 1/4 in female NPT (ANSI/ASME B1.20.1), 316 stainless steel body, regulating stem, PTFE packing, 6,000 psig (414 bar) CWP, -54 to +232 C. Listed here as a cross-reference to help buyers searching that number; the valve on this page is the Alco equivalent indSpare stocks. Pressure rating, port size, thread standard, 316 stainless body, non-rotating 17-4PH stem tip, metal-to-metal seat and metal-to-metal body-to-bonnet seal all correspond. Flow capacity does not: the Parker part has a 0.228 in (5.8 mm) orifice and Cv 0.78, where the Alco N Series 1/4 in valve is published at Cv 0.6, so the Parker part passes roughly 30 per cent more at the same opening. Check flow and orifice before substituting. The Parker valve is also supplied with an aluminium T-bar handle as standard; this valve has a stainless steel T-bar handle.

We carry N2NS as the indSpare-stocked equivalent. Looking for a different brand? Request a quote →

Browse every published equivalence

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