The production of milk with pipe line milking equipment is becoming more Important daily. Every inspector should be thoroughly familiar with each unit and know the rules or regulations which apply. The unit must be installed properly and in such a manner that it can be examined by observation, feel, and swab or rinse tests. It must be installed to provide protection from both inside and outside contamination and must be constructed of a material that can be easily cleaned. A proper washing system is a must and no unit should be accepted without one.