The tank connectors are supplied with self tapping screws (stainless steel / any other appropriate material) and are therefore ideally suited for total immersion under water. Special care is taken to ensure that these screws do not have adverse effect under water, especially when salt or chemicals such as formalin and malachite green come into regular contact with such fixings.

Tank Connectors require hand tightening only. They are designed for tanks with different wall thickness, the maximum thickness being around 4mm.

Pressure Tank Connector
A pressure tank connector apparatus is described with a connector fitting that has a fitting insert sleeve of metal (that is harder than the fitting body) which is crimped over an outwardly extending flange or lip portion of the tank wall (surrounding the opening in the pressure tank) to which the connector is attached. This is done to position the fitting body within the tank and spaced inwardly from the flange.

Many spaced hemispherical projections are molded onto the outer side of the fitting body. These mate with correspondingly shaped indentations, on the inner side of the tank wall portion, surrounding such opening to prevent rotation of the fitting when a tank connector member is threaded into the central passage of such fitting body.

A sealing ring of elastomer material is clamped between the outer side of the fitting body and the inner side of the tank wall at a position surrounding the fitting insert sleeve, in order to provide a gas tight seal. As a result, the pressure tank connector apparatus is safe and strong so that it is capable of withstanding much higher pressures than atmospheric pressure (such as a working pressure of 150 psi and a failsafe pressure of five times that amount). Thus, the invention is suitable for use as a connector for an air brake tank on a truck or other vehicle.