DAWSONS-TECH most cost effective Needle Valve Series : NV109 is designed very carefully with dual ‘O’ Ring sealing arrangement between Stem and Bonnet of the Valve to provide reliable leak tight performance under High Pressure UPTO 10,000 PSIG (690 Bar) applications.
Features / Benefits :
- Compact and rugged design.
- Bar Stock Body in straight pattern.
- Panel Mountable.
- Low operating torque.
- Anti blow-out stem.
- Available with Orifice Size : 4.3mm and 6.3mm.
- Available in material SS316 and Carbon Steel.
- Available with 1/4" to 1/2" Male, Female NPT, BSP, BSPT Pipe Threads and Metric / Fractional Tube end connections.
- Every Valve is Factory tested.
Product Range & Operating Parameters :
- Pressure Rating :
- UPTO 10,000 PSIG (690 Bar) at CWP
- Temperature Rating :
- : -120° C
Applications :
- General Plant Services
- Hydraulic & Pneumatic
- Instrumentation Isolation,
- Venting
Material of Constructions :
| Sr. No. | Part Description | Material |
| 1 | Handle | SS316 |
| 2 | Screw | SS316 |
| 3 | Valve Stem | SS316 |
| 4 | Stem Tip | 17-4 PH |
| 5 | Bonnet | SS316 |
| 6 | Panel Nut | SS316 |
| 7 | Dust Cap | PVC |
| 8 | Back-up Ring | PTFE |
| 9 | ‘O’ Rings | Fluorocarbon |
| 10 | ‘O’ Ring | Fluorocarbon |
| 11 | Safety Pin | SS316 |
| 12 | Valve Body | SS316 |
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 | A/F | |
| Female to Female NPT | 1/4" | 4.3 | 0.37 | 58.0 | 29.0 | 29.0 | 63.5 | 54.0 | 28.57 | NV109-FF4N |
| 3/8” | 4.3 | 0.37 | 60.0 | 30.0 | 30.0 | 63.5 | 54.0 | 28.57 | NV109-FF6N | |
| 1/2" | 6.3 | 0.73 | 65.0 | 32.5 | 32.5 | 65.0 | 58.0 | 31.75 | NV109-FF8N | |
| Male to Female NPT | 1/4" | 4.3 | 0.37 | 60.0 | 31.0 | 29.0 | 63.5 | 54.0 | 28.57 | NV109-MF4N |
| 3/8” | 4.3 | 0.37 | 62.0 | 32.0 | 30.0 | 63.5 | 54.0 | 28.57 | NV109-MF6N | |
| 1/2" | 6.3 | 0.73 | 70.0 | 37.5 | 32.5 | 65.0 | 58.0 | 31.75 | NV109-MF8N | |
| Female to Female BSP | 1/4" | 4.3 | 0.37 | 58.0 | 29.0 | 29.0 | 63.5 | 54.0 | 28.57 | NV109-FF4RG |
| 3/8” | 4.3 | 0.37 | 60.0 | 30.0 | 30.0 | 63.5 | 54.0 | 28.57 | NV109-FF6RG | |
| 1/2" | 6.3 | 0.73 | 65.0 | 32.5 | 32.5 | 65.0 | 58.0 | 31.75 | NV109-FF8RG | |