FAV is manufacturer and exporter of Compression Bulkhead Unions.  Our tubing unions are part of double ferrule fittings range. FAV Tube fittings range are most complete with availability of Male Bulkhead Connector, Bulkhead Union, Accessories and Spares, Nut, Double Ferrule, Port Connector Female, Port Connector Male, Cap, Tube Plug, Female Adaptor in Tube OD and Pipe Connections. With widest possible sizes , material and threading coverage you can get any type of instrument tube fittings at FAV . Compression tube fittings is one of the best way to connect tubes.

Material Availability

Bulkhead Unions are available in Stainless Steel 304 (SS 304), Stainless Steel 316 (SS316),  Brass (Grade IS 319), Carbon Steel, Monel 500, Hastelloy C 276, Incoloy 800 (Alloy 800), Titanium Grade 2 Fittings (Ti Gr 2), Monel 400, Inconel 625, Inconel 825, Duplex 2205 and Super Duplex 32750, Inconel 600 . Most common are Stainless Steel ferrule fittings tubing Union Bulkhead.

For Dedicated page on Titanium Fittings Union Bulkhead click here.

For Dedicated page on Duplex 2205 Fittings and Super Duplex 32750 Fittings Union Bulkhead click here.

Along with Monel 500 , Hastelloy C 276, Incoloy 800, Duplex 2205 and Super Duplex 32750 grade unions are most common.

Purpose of Union Bulkhead

To connect two straight pipes or tubes with assembly of Nut and Ferrule. Ferrules bites onto the pipes/tubes providing a leak proof connection. It has a straight shape so connection is straight. Bulkhead Unions has double ferrule or twin ferrule on both sides. Bulkhead helps in mounting the fittings in the panel. So part of the fittings is hidden and part of the fittings is visible.

Bulkhead union Compression tube fittings

We make Bulkhead union ferrule fittings

Bulkhead Union Instrument Tube Fittings

Bulkhead union double ferrule fittings

Size Availability

Tube options

Unions Bulkhead ferrule fittings are available in Union Double Ferrule Compression Tube, from 1/16″ to 2″ OD Tube and 3mm OD Tube to 50mm OD Tube with Double Ferrule &  Nut.

BULKHEAD UNIONS Tube OD Imperial (inches)

PART No.0D1 Imperial0DF HexA InchL InchPanel Hole sizeMax Panel ThicknessH InchH1 mm

BULKHEAD UNIONS Tube OD metric (mm)


PART No.0D1 Metric0DF HexA mmL mmPanel Hole sizePanel ThicknessH mmH1 mm

Why buy FAV make Bulkhead Unions?

  1. Competitive pricing and fast delivery . We keep spare Nut and Ferrules in stock plus common sizes of Bulkhead
  2. Easy installation design and procedure – Double Ferrule a Nut provides to most easy installation procedure .
  3. Nuts are silver plated on both sides of our instrument tube fittings
  4. Ferrules are annealed to provide amazing biting performance
  5. Except for the ferrules all other components provide easy re-usability option
  6. Our Compression tube fittings do not twist the tube during installation
  7. Heat Number traceability on the body insures right quality of raw material . MTC 3.1 and NACE certification available on request
  8. Standard range from 3000 psi to 6000 psi. On special cases we do undertake 10000 psi.

Industry Applications

Straight Unions are used wherever there are tubes/pipes. Therefore application is widespread with industries including Automobile, Electrical Equipment, Mining, Hydroelectric, Coal & Natural Gas Power, Electric Power Transmission, Nuclear Power. Almost any industry which has tubes involvement require our range of instrument tube fittings.

Some Common Sizes for SS Compression Fittings Bulkhead Union are

  1. FAV Stainless Steel 316 Bulkhead Union 1/8” OD tubing
  2. FAV SS 316 Union Bulkhead 1/4” OD tube
  3. FAV SS 304 Bulkhead Union 3/8” OD tubing
  4. FAV Stainless Steel 304 Bulkhead Union 1/2” OD nut ferrule
  5. FAV SS316 Instrument Bulkhead Union 3/4” OD pipe
  6. FAV SS Bulkhead Union 1” OD Compression
  7. FAV 316 SS Bulkhead Union 6 mm Tube OD
  8. FAV 304 SS Union Bulkhead 8 mm OD Diameter Tube
  9. FAV SS 316 Union Bulkhead 10 mm OD instrument Tube
  10. FAV SS 316 Ferrule Union Bulkhead 12 mm OD Ferrule Tube
  11. FAV SS 316 Ferrule Union Bulkhead 14 mm Ferrule OD Tube
  12. FAV SS 316 Ferrule Union Bulkhead 16 mm OD