Tri clover Clamps are a very popular Hygienic Fitting due to providing a smooth, non-contaminating internal pipework joint. They are part of a Union that consists of two ferrules which are compressed together using a clamp and a gasket between the two ferrules which provides a tight seal. Tri clamps are manufactured from both Grade 304 stainless steel to standard AS1528.3 and are easy to remove by hand using the single hinge clamp wing nut.