Tri Clovers are measured according to the tube size they fit. It is often mistaken that the outside diameter of the flange end of the ferrule is interpreted as the size of the tri clover, but that is not the case.
Tri Clover unions consist of two ferrules with a grooved face to seat a seal in between. This is held together by a 1-piece heavy duty clamp with a single pin and a twist-to-tighten handle.
The clamped union provides a smooth, non-contaminating internal tube joint for manufacturing hygienic product. The unit can also be known as a Tri Clamp union.
A standard Tri Clover Ferrule butt-welds to imperial tube sizes. Ferrules are also available as Tri Clover Expansion Ferrule which features a ridged inside that works as a slip-on connection to suit imperial tube sizes. Both ferrule types are available as a standard Long Ferrule or as a Short Ferrule. The Short Ferrule has been developed to suit pumps and valves or process lines which are operating in confined areas.
The black EPDM Tri Clover Seals are used for standard applications and grey Viton Tri Clover Seals are used for high temperature and chemical resistance purposes.
Typical applications include pharmaceutical machinery and food & beverage plants in almost any industry globally. The New Zealand market uses Tri Clover unions, particularly for dairy sheds, due to the easy installation and the ability for a quick and clean disconnect of a process line.