... and back) aluminum alloy(or cast iron, cast steel)valve body, valve core, valve stem, splint, pull rod and or so other parts ... ok, forbid to use other tools; Install and Maintain:1,Our Pinch Valve’s measurement is Accord with Machinery industry standard, when ... it shouldn’t be unpick and wash or replace it. 2,This valve can install on the pipe for free, no fluent ...