Vectores

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Needle Valves / Plug Valves / Angle Pattern / Miniature Valves

N Series
Needle valves 6,000 psi & 10,000 psi rated

Tube Ended N Series
Compression ended needle valves

UNV Series
Problem solver - unrivalled flexibility of end connections 6,000 psi rated

PV Series
Soft seated plug valves 6,000 psi and 10,000 psi rated

MN Series
Economical mini series 6,000 psi rated

The AlcoMidget™ Valve
Compact soft tip needle valve 3,000 psi rated

OB Series
Oblique needle valve 6,000 psi and 10,000 psi rated

AV Series
Angle pattern needle valve 6,000 psi and 10,000 psi rated

FN Series
Compact forged body needle valves

How to order the above
An explanation of the part numbering system

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N Series
GeneralInformation

Needle Valves 6,000 psi & 10,000 psi
The precision made ‘N’ series, single isolation hand valve utilising metal to metal seat and body to bonnet connection for superior, bubble tight sealing capabilities at both extreme pressures and temperatures. The “N” series also offers nonrotating hardened tip for extended service life. The unique antivibration cam locking device at the bodybonnet connection is for extra safety. Working pressures are 6,000 psi and 10,000 psi. Maximum working temperature up to 230°C and up to 570°C with GP option at reduced pressure.

Design Features
q q q q q q q q q Bubble tight metal to metal seat for positive shut off. 2 piece non-rotating hardened (17-4PH) tip for first time seal and long service life. Pressure responsive multi-ring / pistonpacking for compression and pressure dynamic sealing. Metal to metal body bonnet seal for high pressure and high temperature sealing. Unique bonnet locking cam. No accidental removal of head unit, or loosening due to vibration. Positive no slack stem action. Bi-directional flow, with preferred flow indicated. Back sealing stem to extend packing life. Available NPT, BSPP, BSPT threaded. C q q q q q qq q Temperature rating -50°C to 230°C (570°C with GP option). Repair / service kits available to extend field life further. Actuating threads are above the packings to prevent contamination by the process medium. Body to bonnet ingress seal fitted as standard to prevent crevice corrosion. Full material traceability of major components. 100 % Hydrostatic testing. Available fire safe to BS6755 Part2 API 607. Materials of construction can be supplied to meet the requirements of NACE MR-01-75 latest revision.

Flow B

The Alco N series needle valve has a preferred flow direction however the unit is bi-directional

A

D

Part Numbers
St / St Part No. N2NS N3NS N4NS N6NS N8NS Connections
Size

A 61 61 68 76 85

B
(Open)

1/4” NPT 3/8” NPT 1/2” NPT 3/4” NPT 1” NPT

73 73 7577 85

Orifice size 5 5 5 5 8

C 50 50 50 50 50

D 26 26 28 38 45

CV 0.3 0.75 0.75 0.75 1.8

KV 0.26 0.65 0.65 0.65 1.6

Weight
(Kgs)

0.35 0.35 0.38 0.7 1.1
Dims are in mm (Appx)

For 10,000 psi version add “U” i.e. UN4NS For BSPP threads change “N” to”P” i.e. N2PS For BSPT threads change “N” to”T” i.e. N2TS Packing materials: RTFE (standard) graphoil high temperature option-GP Orifice may vary with rating

See technical section for important additional valve data.

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Tube Ended N Series
General Information

Compression Ended Needle Valve
The standard ‘N’ serieswith compression type tube fitting ends. Single isolation hand valve utilising metal to metal seat and body to bonnet connection for superior, bubble tight sealing capabilities at both extreme pressures and temperatures. The N series also offers non-rotating hardened tip for extended service life. The unique anti-vibration cam locking device at the body bonnet connection is for extra safety....
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