Consist of single piece moulding, for added safety and flexibility. The UNI-PIG Series includes the UNI-FLEX, a series of discs and a single cup on the rear, UNI-CUP a 3 Cup pig and the UNI-PLUS which has 2 cups for sealing and 2 discs for scraping the pipe wall. All UNI-PIGS have an opened center to the nose so pressure helps expand the pig for tighter seal when pigging.
