Spa valve

Claim 1

An air injector valve for a spa, the valve comprising a body having an internally threaded section and an externally threaded section, a support section above the externally threaded section, said support section being of larger transverse dimensions than the externally threaded section, the underface of the larger section forming a valve support surface and the part of the body below said externally threaded section being of smaller transverse dimensions than the support section whereby the valve body can be passed downwardly through an aperture in a spa shell until said underface of the support section engages said shell, a valve seat within the body at a level below said underface, a cap which is releasably secured to the upper end of the body, said cap comprising an externally threaded sleeve which screws into said internally threaded section, and said cap further comprising an externally threaded sleeve which screws into said internally threaded section, and said cap further comprising a dome-shaped portion, said sleeve protruding downwardly from the underside of said dome-shaped portion and there being a non-circular opening in said dome-shaped portion, and a valve jumper within the body, said jumper being below said surface, co-operating with said valve seat and being in a chamber which is bounded partly by said body and partly by the cap, the jumper being removable through the open upper end of said chamber once said cap has been detached from the body.