Sanitary Push Pull Clamps are most popular for easy assembly and breakdown of fractional non-metallic process lines and equipment. Push Pull Clamps are sized for Fractional Tri-Clamp® fittings ranging from 1/8 to ¾. GVC Direct, Inc. offers Non-metallic Sanitary Tri-Clamp® Fittings in PolyPro and Kynar® materials in many different configurations and sizes.