UN MxF Series Needle Valves (ID=280)

10,000 psi

The precision made 'UN' series, single isolation hand valve utilizing metal to metal seat and body to bonnet connection for superior, bubble tight sealing capabilities at both extreme pressures and temperatures. The 'UN' 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. Maximum working pressure is 10,000psi. Maximum working temperature up to 230°C.

  • 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
  • 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
  • Back sealing stem to extend packing life
  • Temperature range -40°C to 230°C
  • Available in 316/316L stainless steel
  • Actuating threads are above the packing seals to prevent contamination by process medium
  • Body to bonnet ingress seal fitted as standard to prevent crevice corrosion
  • Repair/service kits available to extend service life further
  • Full material traceability of major components
  • Materials of construction supplied to meet the requirements of NACE MR 0175

UN MxF Series Needle Valves

Part NumberSizeABBoreCCVWeight
(in.) (mm) (in.) (mm) (in.) (mm) (in.) (mm) (lbs.) (Kg)
UN2NS-1M 1/4" NPT 2.40 61 2.99 76 0.12 3.0 0.98 25 0.38 0.77 0.35
UN4NS-1M 1/2" NPT 2.68 68 3.03 77 0.20 5.0 1.14 29 0.70 0.95 0.43

Item NumberDescriptionMaterialQuantity
1 Needle Body A479 UNS S31600 1
2 Handle Bolt A4 ST/ST 1
3 "T" Handle UNS S31600 1
4 Isolate Dust Cap PVC 1
5 Gland Adjuster UNS S31600 1
6 Gland Packing RTFE 4
7 Needle Stem A479 UNS S31600 1
8 Gland Locknut UNS S31600 1
9 Bonnet Housing A479 UNS S31600 1
10 Ingress Seal VITON 1
11 Valve Tip A564 UNS S17400 1
12 Cam Screw A4 ST/ST 1
13 Locking Cam UNS S31600 1


Region:North America
Location of United States: US: LooKupArray ( [userLocation] => US [userRegion] => North America )