Hammer union assembly

  • Quick-connect hammer union with nitrile O-ring.
  • Ideal for fast assembly/removal in oilfield mud tanks.
  • Maintains a leak-proof seal even with misalignment up to 7°
  • Designed for low-pressure, large-diameter pipelines.
  • Handles big misalignments and frequent disassembly.
  • Reduces labor and speeds up construction.
  • Improved version of Air Unions.

Structure & Design

  • Externally threaded (female) portion welds onto a stub of a pipe on the mud tank wall
  • Connection pipe passes through nut and O-ring into female part.
  • Nut tightens to compress O-ring and seal.

Technical Parameters

  • Withstands fluid pressure up to 150 psi.
  • Working medium: Oil based mud, water based mud, slurry or other drilling fluid
  • Ambient temperatures: -30℃~55℃
  • Medium temperature: 0℃~90℃ (Viton seal required for Hi-temp)

 

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Available in 6″, 8″, 10″, and 12″

6 (in) 8 (in) 10 (in) 12 (in)
Inch mm Inch mm Inch mm Inch mm
A (Clearance Radius) 6 1/4 158.75 7 3/4 196.85 9 1/8 231.775 10 254
B Outside Diameter 8 5/8 219.075 10 3/4 273.05 12 11/16 322.2625 14 355.6
C (End to Face) 5 1/8 130.175 5 1/8 130.175 5 1/4 133.35 5 1/8 130.175
D (Socket Weld Depth)   3/16 4.7625   3/16 4.7625   3/16 4.7625   3/16 4.7625
Weight (LBSF) 36 48 63 67
Weight (KGF) 16.329 21.772 28.576 30.391

Hammer Union Dimensions