GO Needle Valve 316 Stainless Scr BSP Range



GO Needle Valve 316 Stainless Scr BSP Range

A needle valve uses a tapered pin to gradually open a space for fine control of flow. The flow can be controlled and regulated with the use of a spindle. A needle valve has a relatively small orifice with a long, tapered seat, and a needle-shaped plunger on the end of a screw, which exactly fits the seat.

As the screw is turned and the plunger retracted, flow between the seat and the plunger is possible; however, until the plunger is completely retracted, the fluid flow is significantly impeded. Since it takes many turns of the fine-threaded screw to retract the plunger, precise regulation of the flow rate is possible.

The virtue of the needle valve is from the vernier effect of the ratio between the needle's length and its diameter, or the difference in diameter between needle and seat. A long travel axially (the control input) makes for a very small and precise change radially (affecting the resultant flow).

GO Stainless Steel Needle Valves are made for performance. With a pressure rating of 6,000 psi and features guaranteeing positive shut off, you can count on long life and stellar performance.

  • 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
  • Pressure responsive multi-ring/piston packing for compression and pressure dynamic sealing
  • 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
  • Backing sealing stem to extend packing life
  • BSP threaded
  • 100% Hydrostatic testing

316 Stainless Steel needle valve allows the user to precisely control flow by screwing the needle down onto a seat. Rated to 408 BAR (6000 psi) with T bar handle. Great for use on compatable fluids and gases.

Port Size (BSP) Media Pressure Media Temperature CV
¼” 0 to 408 Bar -20°C to 230°C 4
3/8” 0 to 408 Bar -20°C to 230°C 4
½” 0 to 408 Bar -20°C to 230°C 6
¾” 0 to 408 Bar -20°C to 230°C 16
1” 0 to 408 Bar -20°C to 230°C 25

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