Bulkhead Unions

  • Designed for Plumbing Tubing through Equipment Housing
  • For Use with Standard 1/4-28, 10-32 and M6 Threaded Fittings
Thread Upchurch Scientific® PEEK™ Bulkhead Unions directly through your equipment housing to connect internal tubing to the outside. Each union has unique 3/8-24 external threads and comes complete with a stainless steel nut and lock washer to hold it in place. Requires a 3/8" hole to mount. The recommended torque limit for these unions is 15 in. lbs.

Stainless Steel Bulkhead Unions are also available.

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Item #

Item Name

Color

Thru-Hole

Internal Thread

Swept Volume

List Price

P-440

Union Assy PEEK 1/16 Bulkhead

Natural

0.02 in | 0.5 mm

11963

1.9 µL

$15.40
P-441

Union Asy PEEK 1/4-28 BlkHd

Red

0.04 in | 1 mm

46756

2.9 µL

$15.40
P-441N

Union Asy PEEK 1/4-28 BlkHd

Natural

0.04 in | 1 mm

46756

2.9 µL

$15.40
P-442

Union Assy PEEK M6 Bulkhead

Black

0.04 in | 1 mm

M6

2.9 µL

$19.09
P-440-01

Union Body PEEK 1/16 Bulkhead

N/A

0.02 in | 0.5 mm

11963

1.9 µL

$13.51
P-441-01

Union Body PEEK 1/4-28 BlkHd

Red

0.04 in | 1 mm

46756

2.9 µL

$13.51
P-441-01B

Union Body PEEK 1/4-28 BlkHd

Blue

0.04 in | 1 mm

46756

2.9 µL

$13.10
P-441-01BLK

Union Body PEEK 1/4-28 BlkHd

Black

0.04 in | 1 mm

46756

2.9 µL

$13.51
P-441-01G

Union Body PEEK 1/4-28 BlkHd

Green

0.04 in | 1 mm

46756

2.9 µL

$13.10
P-441-01N

Union Body PEEK 1/4-28 BlkHd

Natural

0.04 in | 1 mm

46756

2.9 µL

$13.51
P-441B

Union Asy PEEK 1/4-28 BlkHd

Blue

0.04 in | 1 mm

46756

2.9 µL

$15.40
P-441BLK

Union Asy PEEK 1/4-28 BlkHd

Black

0.04 in | 1 mm

46756

2.9 µL

$15.40
P-441G

Union Asy PEEK 1/4-28 BlkHd

Green

0.04 in | 1 mm

46756

2.9 µL

$15.40
P-442-01

Union Body PEEK M6 Bulkhead

N/A

0.04 in | 1 mm

M6

2.9 µL

$13.10
U-439-01

Union Body .052 Bulkhead

N/A

N/A

N/A

N/A

$30.64
U-440

Union Asy ZDV .020 thru BlkHd

N/A

N/A

N/A

N/A

$44.59
U-440-01

Union Body ZDV .020 Bulkhead

N/A

N/A

N/A

N/A

$27.41
U-441

Union Asy ZDV .010 thru BlkHd

N/A

N/A

N/A

N/A

$48.22
U-453

Union Asy Flat Bttm .040 BlkHd

N/A

N/A

N/A

N/A

$72.07
U-454

BULKHEAD UNION FLTBTM. .062

N/A

N/A

N/A

N/A

$26.27