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 Description | Material |
1 | Handle | SS316 |
2 | Screw | SS316 |
3 | Valve Stem | SS316 |
4 | Packing Nut | SS316 |
5 | Belleville Washer | Stainless Steel |
6 | Upper Gland | SS316 |
7 | Packing | PTFE / Graphite |
8 | Lower Gland | SS316 |
9 | Panel Nut | SS316 |
10 | Bonnet | SS316 |
11 | Washer | SS316 |
12 | Safety Pin | SS316 |
13 | Valve Body | SS316 |
Technical Data :
The temperature and pressure rating for a standard Valve with PTFE packing.
Temperature | Pressure | |
PSIG | Bar | |
-54OC to 38OC | 6000 | 408 |
-54OC to 93OC | 5160 | 351 |
-54OC to 148OC | 4660 | 317 |
-54OC to 204OC | 4280 | 291 |
-54OC to 232OC | 4130 | 289 |
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 Connection | Flow Data | Dimensions in mm | Dawsons-TechPart No. | ||||||||
Type | Size - A | Orifice | Cv | B | C | D | E | F | G | A/F | |
Tube OD to Tube OD(Fractional) | 1/4" | 4.3 | 0.37 | 72.8 | 36.4 | 36.4 | 75.0 | 54.0 | 19.6 | 25.40 | NV107-TT4 |
3/8” | 4.3 | 0.37 | 72.8 | 36.4 | 36.4 | 75.0 | 54.0 | 19.6 | 25.40 | NV107-TT6 | |
1/2" | 6.3 | 0.73 | 80.0 | 40.0 | 40.0 | 79.0 | 58.0 | 19.6 | 28.57 | NV107-TT8 | |
Tube OD to Tube OD(Metric) | 6mm | 4.3 | 0.37 | 72.8 | 36.4 | 36.4 | 75.0 | 54.0 | 19.6 | 25.40 | NV107-TT4M |
8mm | 4.3 | 0.37 | 73.0 | 36.5 | 36.5 | 75.0 | 54.0 | 19.6 | 25.40 | NV107-TT6M | |
10mm | 6.3 | 0.73 | 73.2 | 36.6 | 36.6 | 79.0 | 54.0 | 19.6 | 28.57 | NV107-TT8M | |
12mm | 6.3 | 0.73 | 80.0 | 40.0 | 40.0 | 79.0 | 54.0 | 19.6 | 28.57 | NV107-TT12M | |
Female to Female NPT | 1/4" | 4.3 | 0.37 | 58.0 | 20.0 | 29.0 | 75.0 | 54.0 | 19.6 | 25.40 | NV107-FF4N |
3/8” | 4.3 | 0.37 | 60.0 | 30.0 | 30.0 | 79.0 | 54.0 | 19.6 | 28.57 | NV107-FF6N | |
1/2" | 6.3 | 0.73 | 65.0 | 32.5 | 32.5 | 80.5 | 58.0 | 19.6 | 31.75 | NV107-FF8N | |
Male to Female NPT | 1/4" | 4.3 | 0.37 | 60.0 | 31.0 | 29.0 | 75.0 | 54.0 | 19.6 | 25.40 | NV107-MF4N |
3/8” | 4.3 | 0.37 | 62.0 | 32.0 | 30.0 | 79.0 | 54.0 | 19.6 | 28.57 | NV107-MF6N | |
1/2" | 6.3 | 0.73 | 70.0 | 37.5 | 32.5 | 80.5 | 58.0 | 19.6 | 31.75 | NV107-MF8N | |
Female to Female BSP | 1/4" | 4.3 | 0.37 | 58.0 | 29.0 | 29.0 | 75.0 | 54.0 | 19.6 | 25.40 | NV107-FF4RG |
3/8” | 4.3 | 0.37 | 60.0 | 30.0 | 30.0 | 79.0 | 54.0 | 19.6 | 28.57 | NV107-FF6RG | |
1/2" | 6.3 | 0.73 | 65.0 | 32.5 | 32.5 | 80.5 | 58.0 | 19.6 | 31.75 | NV107-FF8RG | |
Socket Weld to Socket Weld | 1/4" | 4.3 | 0.37 | 58.0 | 29.0 | 29.0 | 75.0 | 54.0 | 19.6 | 25.40 | NV107-SW4 |
3/8” | 4.3 | 0.37 | 58.0 | 29.0 | 29.0 | 75.0 | 54.0 | 19.6 | 25.40 | NV107-SW6 | |
1/2" | 6.3 | 0.73 | 65.0 | 32.5 | 32.5 | 79.0 | 54.0 | 19.6 | 28.57 | NV107-SW8 | |
3/4" | 6.3 | 0.73 | 70.0 | 35.0 | 35.0 | 80.5 | 58.0 | 19.6 | 31.75 | NV107-SW12 |