Needle Valve Series : NV107


DAWSONS-TECH most cost effective Needle Valve Series : NV107 is designed very carefully with Live Loaded PTFE/ Graphite Packing to provide repeated leak tight seal between Stem and Bonnet of the Valve and also compensate for wear & Pressure / Temperature fluctuations during its operations.
Features / Benefits :
  • Compact and rugged design.
  • Bar Stock Body in straight and angle pattern.
  • Low operating torque.
  • Anti blow-out stem.
  • Flow coefficient (Cv) from 0.25 to 0.73.
  • Orifice Size : 4.3mm and 6.3mm.
  • Available in material SS316, all wetted parts in accordance with NACE MR01-75.
  • Available with Male, Female NPT, BSP, BSPT Pipe Thread, Socket Weld and Tube O.D. end connections.
  • Available with self centering non-rotating stem tip.
  • Suitable for pressure rating UPTO 6000 PSIG (413 Bar) at CWP.
  • Every Valve is Factory tested.
Product Range & Operating Parameters :
  • Pressure Rating :
    • UPTO 6000 PSIG (413 Bar at CWP).
    • Pressure UPTO 10,000 PSIG (680 Bar) are available on request.
  • Temperature Rating :
    • : -54° C to 232° C with PTFE Packing.
    • : -96° C to 426° C with Graphite Packing.
Applications :
  • General Plant Services
  • Hydraulic & Pneumatic
  • Instrumentation Isolation,
  • Pressure Measurement Devices
  • Venting

Material of Constructions :
Sr. No.Part DescriptionMaterial
1HandleSS316
2ScrewSS316
3Valve StemSS316
4Packing NutSS316
5Belleville WasherStainless Steel
6Upper GlandSS316
7PackingPTFE / Graphite
8Lower GlandSS316
9Panel NutSS316
10BonnetSS316
11WasherSS316
12Safety PinSS316
13Valve BodySS316

Technical Data :
The temperature and pressure rating for a standard Valve with PTFE packing.
TemperaturePressure
PSIGBar
-54OC to 38OC6000408
-54OC to 93OC5160351
-54OC to 148OC4660317
-54OC to 204OC4280291
-54OC to 232OC4130289
 
Testing :
 
  • Standard Test : Each Valve is pressure tested with Nitrogen at 2000 PSIG (138 Bar) for leakage at the seat and packing.
  • Optional Hydrostatic Test : This test is performed with De-ionized water at 1.5 times the working pressure.
 
Certification :
  The certificate to 3.1 acc. to EN10204 for Valves Body Material and pressure test will be provided on request.

STANDARD CONFIGURATION DIMENSIONS :
End ConnectionFlow DataDimensions in mmDawsons-Tech Part No.
TypeSize - AOrificeCvBCDEFGA/F
Tube OD to Tube OD (Fractional)1/4"4.30.3772.836.436.475.054.019.625.40NV107-TT4
3/8”4.30.3772.836.436.475.054.019.625.40NV107-TT6
1/2"6.30.7380.040.040.079.058.019.628.57NV107-TT8
Tube OD to Tube OD (Metric)6mm4.30.3772.836.436.475.054.019.625.40NV107-TT4M
8mm4.30.3773.036.536.575.054.019.625.40NV107-TT6M
10mm6.30.7373.236.636.679.054.019.628.57NV107-TT8M
12mm6.30.7380.040.040.079.054.019.628.57NV107-TT12M
Female to Female NPT1/4"4.30.3758.020.029.075.054.019.625.40NV107-FF4N
3/8”4.30.3760.030.030.079.054.019.628.57NV107-FF6N
1/2"6.30.7365.032.532.580.558.019.631.75NV107-FF8N
Male to Female NPT1/4"4.30.3760.031.029.075.054.019.625.40NV107-MF4N
3/8”4.30.3762.032.030.079.054.019.628.57NV107-MF6N
1/2"6.30.7370.037.532.580.558.019.631.75NV107-MF8N
Female to Female BSP1/4"4.30.3758.029.029.075.054.019.625.40NV107-FF4RG
3/8”4.30.3760.030.030.079.054.019.628.57NV107-FF6RG
1/2"6.30.7365.032.532.580.558.019.631.75NV107-FF8RG
Socket Weld to Socket Weld1/4"4.30.3758.029.029.075.054.019.625.40NV107-SW4
3/8”4.30.3758.029.029.075.054.019.625.40NV107-SW6
1/2"6.30.7365.032.532.579.054.019.628.57NV107-SW8
3/4"6.30.7370.035.035.080.558.019.631.75NV107-SW12
  Dimensions are for reference only and are subject to change.