DLOK Environmental Quality Engineering
Needle Valves

Needle Valves

  • DLOK Needle Valves are available with metal seat and soft seat options to suit different application requirements.
  • Available in sizes ranging from 1/8" to 1".
  • Maximum working pressure up to 10,000 psig (690 bar).
  • Manufactured from SS 316, Duplex, Monel, and Hastelloy using high-quality bar stock.
  • Offered with Male & Female NPT, BSPP, BSPT, ISO tapered pipe threads, and DLOK tube fitting end connections.
  • Standard PTFE gland packing, with optional Graphite (Graphoil) packing for high-temperature applications up to 538°C (1000°F).
  • Non-rotating Vee Tip or Ball Tip design provides smooth operation and reliable leak-tight shut-off.
  • Suitable for isolation, block & bleed, and vent applications.
  • Heat code traceability ensures complete material identification and quality assurance.
  • NACE-compliant versions are available on request for sour service applications.
Enquiry Catalogue

Products

Screwed Bonnet Needle Valves

Hard Seat Needle Valve (Male x Female) Hard Seat Needle Valve (Male x Female)
Hard Seat Needle Valve (Female x Female) Hard Seat Needle Valve (Female x Female)
Hard Seat Block & Bleed Valve (Male x Female) Hard Seat Block & Bleed Valve (Male x Female)
Hard Seat Block & Bleed Valve (Female x Female) Hard Seat Block & Bleed Valve (Female x Female)
Soft Seat Needle Valve (Male x Female) Soft Seat Needle Valve (Male x Female)
Soft Seat Needle Valve (Female x Female) Soft Seat Needle Valve (Female x Female)
Soft Seat Block & Bleed Valve (Male x Female) Soft Seat Block & Bleed Valve (Male x Female)
Soft Seat Block & Blled Valve (Female x Female) Soft Seat Block & Blled Valve (Female x Female)

Integrated Bonnet Needle Valves

Needle Valve (Male x Female) Needle Valve (Male x Female)
Needle Valve (Female x Female) Needle Valve (Female x Female)
Needle Valve (ODT x ODT) Needle Valve (ODT x ODT)

Hex Body Needle Valves

Hard Seat Needle Valve (Male x Female) Hard Seat Needle Valve (Male x Female)
Hard Seat Needle Valve (Female x Female) Hard Seat Needle Valve (Female x Female)
Hard Seat Block & Bleed Valve (Male x Female) Hard Seat Block & Bleed Valve (Male x Female)
Hard Seat Block & Bleed Valve (Female x Female) Hard Seat Block & Bleed Valve (Female x Female)
Soft Seat Needle Valve (Male x Female) Soft Seat Needle Valve (Male x Female)
Soft Seat Needle Valve (Female x Female) Soft Seat Needle Valve (Female x Female)
Soft Seat Block & Bleed Valve (Male x Female) Soft Seat Block & Bleed Valve (Male x Female)
Soft Seat Block & Bleed Valve (Female x Female) Soft Seat Block & Bleed Valve (Female x Female)

Gauge Root Needle Valves

Gauge Root Needle Valve (Male x Male) Gauge Root Needle Valve (Male x Male)
Gauge Root Needle Valve (Female x Male) Gauge Root Needle Valve (Female x Male)