4L is an authorized DK-LOK® fittings and valves distributor.

DK-LOK® fittings and valves are manufactured to the most rigorous and stringent industry standards. This has led DK-LOK® to be one of the most certified tube fitting and valve manufacturers in the world. 4L and DK-LOK®’s guarantee is a leak-tight seal in process, power, and instrumentation applications. 4L’s pledge is to provide our customers with reliable quality products and unprecedented quality customer service. As your fittings and valve provider, it is our responsibility to bring increased value to your company and facility/plant.

4L is committed to providing you with unmatched customer service through our quality fitting and valve offerings. We can create a true value for you. 4L looks forward to working with you and creating a solution for your needs.

Contact us: [email protected]

  • TUBE FITTINGS – COMPRESSION TUBE FITTINGS
  • PIPE & WELD FITTINGS
  • BALL & PLUG VALVES
  • CHECK VALVES
  • INSTRUMENTATION MANIFOLDS
  • NEEDLE VALVES
  • QUICK CONNECTS
  • RELIEF VALVES
  • JIC ADAPTERS
  • BLEED/PURGE VALVES
  • PRESSURE GAUGES
  • PRESSURE REGULATORS
  • METERING VAVLES
  • DIN 2353 METRIC ADAPTERS
  • ORFS ADAPTERS
  • HIGH PRESSURE ADAPTERS, FITTINGS, & VALVES
  • DOUBLE BLOCK & BLEED MONOFLANGES
  • UHP CLEAN FITTINGS – WELD & FACE SEAL FITTINGS
  • BELLOWS VALVES
  • STAINLESS STEEL TUBING
  • LARGE BORE BALL VALVES
  • ALTERNATIVE FUEL PRODUCTS
  • VENT RELIEF VALVES
  • DIAPHRAGM VALVES
  • PRESSURE REGULATORS
  • PUSH ON HOSE AND FITTINGS
  • HYDRAULIC CONDENSATE POTS
  • O-RING FACE SEAL FITTINGS
  • AIR DISTRIBUTION MANIFOLD (AIR HEADER)
  • CNG CHECK VALVES
  • NGV PRODUCTS – RCQ SERIES RECEPTACLES
  • HIGH FLOW QUICK COUPLERS (CONNECTS)
  • ULTA-TORR VACUUM FITTINGS
  • METAL FLEXIBLE HOSES
  • STAINLESS STEEL BRAIDED PTFE LINED HOSES
  • HYDRAULIC PIPE FITTINGS
  • V43 SERIES GATE VALVES
  • HOSE ADAPTERS-HOSE BARBS, ETC.
Compression Tube Fittings – SS, brass, and exotic material-img

Compression Tube Fittings – SS, brass, and exotic material

Instrumentation Pipe & Weld Fittings-img

Instrumentation Pipe & Weld Fittings

JIC adapters and Fittings-img

JIC adapters and Fittings

Needle Valves-img

Floating flanged teflon lined hoses

Ball and Plug valves-img

All SS flanged expansion joints

Check Valves-IMG

Check Valves

Relief valves-img

Relief valves

Push-on hose-img

Push-on hose

Push-on hose fittings & Hose Barb Fittings-img

Push-on hose fittings & Hose Barb Fittings

Gauges-img

Gauges

High Pressure Fittings and Valves (C & T)-img

High Pressure Fittings and Valves (C & T)

O-ring Face Seal Fittings- Zero Clearance-img

High Pressure Fittings and Valves (C & T)

Liquid Leak Detector-img

Liquid Leak Detector

Tube and Pipe Supports-img

Tube and Pipe Supports

High Purity Fittings and Valves-img

High Purity Fittings and Valves

Ultra-Torr Fittings-img

Ultra-Torr Fittings

ORFS Face Seal Fittings (Hydraulic)-img

Ultra-Torr Fittings

Metering Valves-img

Metering Valves

Pressure Regulators and Back-pressure Regulators-img

Pressure Regulators and Back-pressure Regulators

Quick Connects-img

Quick Connects

Ultra-High Purity Fittings (weld and metal gasket face seal)-img

Ultra-High Purity Fittings (weld and metal gasket face seal)

Instrument Manifolds – Flanges, Remote and Direct mount-img

Ultra-High Purity Fittings (weld and metal gasket face seal)

CNG components-img

CNG components

Braided Teflon lined and All SS hoses-img

Braided Teflon lined and All SS hoses

Large Bore Ball Valves-img

Large Bore Ball Valves

info4lfluidtech-img
Contact us:[email protected].