Yale Unions

Our Yale union design allows valves and other fittings to be removed easily from the production line.

  • Description Description
  • Ruler Specifications

The ease of removal of our Yale union from the production line offers an advantage when installing the fitting in a short section of line, as it is not necessary to “spread” or bend the line when removing the fitting. Our unions can be manufactured to your material specifications: carbon steel, alloy steel, or ductile iron.


  • Figure 110 “Insulating Unions”
  • Figure 210 “Blanking Union”
  • Figure 300I “Insulating Unions”
  • Figure 300 “Flat Face”
  • Figure 310 “Threaded Choke”
  • Figure 800 “Quick Stab”
  • Figure 800R “Quick Stab”

Yale Union Specifications

Maximum working pressure range 500 to 12,500 psi
Maximum temperature 500 °F (260 °C)
Size range ¼ to 8 in.
A closeup of a Yale Union piece