The RJT union (Ring Joint Type) can be recognised by the slim hexagon nut and O section joint ring. Although still widely used because of comparative costs, it is not considered suitable for modern systems which are cleaned in place, because the crevice between the liner and the spigot on the male is difficult to clean. However, the positive location of the joint ring in the male part and the course whitworth thread make this a common choice where regular dismantling takes place for cleaning.
    RJT union parts conform generally to B.S. 4825 part 5 ( formerly B.S.1864 )
    Robust construction
    10 Bar working pressure
    316 SS wetted parts
    wide range of seal materials available, Nitrile, Silicone, EPDM, PTFE
    size range 1" – 4"