Instrumentation Valves For Process & Gas Industries


DAWSONS-TECH® offers most Cost-Effective Needle Valves, Gauge Valves, Block and Bleed Gauge Valves and Bleed Valves which have been design very carefully and manufactured to close tolerances to provide leak free performance for mounting on Pressure Gauges, Pressure Transmitters, Pressure Switches, etc.

Features / Benefits :
  • Available in Material SS316, all wetted parts in accordance with NACE MR01-75.
  • Bar stock body in straight patterns.
  • Low operating torque.
  • Anti blow-out stem.
  • Flow Coefficient (Cv) from 0.25 to 1.8.
  • Orifice size : 4.3mm, 6.3mm and 9.5mm.
  • Available with Male, Female NPT, BSP, BSPT Pipe Thread, Socket Weld and Tube O.D. end connections.
  • Every Valve is pressure tested.
Product Range & Operating Parameters :
  • Pressure Rating : UPTO 6000 PSIG (413 Bar) at CWP.
  • Temperature Rating :
    • : -54° C to 232° C with PTFE Packing.
    • : -96° C to 426° C with Graphite Packing.
  • End Connections -
    • Fractional : 1/4" to 1" Tube OD.
    • Metric : 6mm to 16mm Tube OD.
    • Pipe Threads : 1/4" to 3/4" Male / Female NPT, BSPT, BSP & Socket Weld
Applications :
  • General Plant Services
  • Hydraulic & Pneumatic
  • Instrumentation Isolation,
  • Pressure Measurement Devices
  • Venting
Type Test Approvals :
The design of DAWSONS-TECH Valves Series : NV101, NV103, NVD31, VGR23, BBGV1 & VBL03 have been tested for Hydrostatic Proof and Burst Test in accordance with MSS SP-99-2016a Clause 5.5 & 5.6.

Testing :
  • Standard Test - Each Valve is pressure tested with Nitrogen at 2000 PSIG (69 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.
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    Certification :
    The certificate to 3.1 acc. to EN10204 for Valves Body Material and pressure test will be provided on request.

    Instrumentation Needle / Gauge Valves includes :
    Panel Mounted Needle Valves, High Pressure Needle Valves, Bleeder Screw Gauge Valves, Bleeder Screw Gauge Valves with Swivel Nut, Gauge / Root Valves, Block & Bleed Gauge Valves, Angle Needle Valves, Bleed Valves, Needle Valve with Live Load Packing, etc.