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Needle Valves

Needle Valves

Hy-Lok USA, Inc. needle valves offer secure, leak-free connections and provide the lowest overall cost of any instrument needle valve used in the market today. Rugged and compactly designed, Hy-Lok offers a wide range of sizes (1/8" to 1"), and stem tips (v-stem, regulating, and soft seat).

End connection options include male / female NPT, Hy-Lok tube fittings, and ISO threads from 1/8" to 1". Available in stainless steel, carbon steel, brass, and alloy 400. With pressure rating to 10,000 psi and temperatures up to 1,200°F, Hy-Lok has a needle valve solution to meet your needs.

Contact your Hy-Lok fluid system solutions expert today to learn more or locate a distributor.

Download Our Needle Valve Comparison Chart


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NV Series Needle Valves

NV Series: Integral Bonnet Needle Valves

  • Pressure rating to 5,000 psi (340 bar) at 100°F (38°C).
  • Temperature rating from -65°F to 450°F (-54°C to 232°C) with standard PTFE packing, and up to 600°F (315°C) with optional PEEK packing.
  • Integral bonnet with one piece body is available with straight and angle patterns.
  • Standard panel mounting nut allows easy mounting.
  • Variety of stem tips include vee tip standard, regulating, and soft seat as an option.
  • Size range from 1/8" thru 3/4" tubing and pipe.
  • Variety of end connections include Hy-Lok tube fittings, male/female NPT and ISO threads.
  • Standard materials are 316 stainless steel and brass.

View NV Needle Valve Catalog

SV Series Needle Valves

SV Series: Integral Bonnet Needle Valves

  • Pressure rating to 6,000 psi (413 bar) at 100°F (38°C).
  • Temperature rating from -65°F to 450°F (-54°C to 232°C) with standard PTFE packing, and up to 600°F (315°C) with optional PEEK packing.
  • Compact and rugged body design.
  • Body is made of extruded bar stock and available in straight and angle patterns.
  • Variety of stem tips include vee tip standard, regulating, and soft seat as an option.
  • Size range from 1/8" thru 1/2" tubing and pipe.
  • Variety of end connections include Hy-Lok tube fittings, male/female NPT and ISO threads.
  • Body Material is standard in 316 stainless steel.

View SV Needle Valve Catalog

SVH Series High Pressure Needle Valves

SVH Series: High Pressure Needle Valves

  • Pressure rating to 10,000 psi (689 bar) at 100°F (38°C).
  • Temperature rating from -65°F to 450°F (-54°C to 232°C) with standard PTFE packing, and up to 600°F (315°C) with optional PEEK packing.
  • Metal seal body-to-bonnet.
  • Rugged body is machined from barstock with straight pattern standard, angled pattern optional.
  • Size range from 1/4" thru 3/4" tubing and pipe.
  • Compact design with orifice from 0.125" to 0.2" (3.2mm to 5.0mm).
  • Variety of stem tips includes non-rotating vee tip standard, optional ball tip available.
  • Variety of end connections include Hy-Lok tube fittings, male/female NPT and ISO threads.
  • Body Material is available is 316 stainless steel standard.

View SVH Needle Valve Catalog

GB Series Needle Valves

GB Series: Union Bonnet Needle Valves

  • Pressure rating to 6,000 psi (413 bar) at 100°F (38°C).
  • Temperature rating from -65°F to 450°F (-54°C to 232°C) with standard PTFE packing, and up to 1,200°F (648°C) with optional Grafoil packing.
  • Union bonnet design ensures safety.
  • Panel mounting nut is standard.
  • Variety of stem tips include non-rotating vee tip standard, with optional ball, soft seat and regulating tip available.
  • Size range from 1/8" thru 1" tubing and pipe.
  • Variety of end connections include Hy-Lok tube fittings, male/female NPT and ISO threads. Tube and pipe socket weld available.
  • 316 stainless steel and alloy 400 is available.

View Union Bonnet Needle Valve Catalog

RP Series Needle Valves

RP Series: Rising Plug Valves

  • Pressure rating to 6,000 psi (413 bar) at 100°F (38°C).
  • Temperature rating from -20°F to 250°F (-29°C to 121°C) with PCTFE seat standard, and up to 400°F (204°C) with optional PEEK seat.
  • Stem seal below threads to keep threads clean.
  • Non-rotating stem tip minimizes seat wear-out.
  • Robust body design with safety bonnet locking plate.
  • Orifice in straight flow path ensures max CV.
  • PCTFE seat standard, PEEK available.
  • Sour gas service available.
  • Gauge port option available.
  • A Variety of end connections include male/female NPT, ISO, BSP threads and female Hy-Lok tube fittings.
  • Body Material is available is 316 stainless steel standard.

View Rising Plug Valve Catalog

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