Collins Group A Dump Valve & Tee Piece - not DV26 on eBay (end time 07-Feb-10 21:50:21 GMT) Collins Group A Dump Valve & Tee Piece. Only used for about 2k miles on a Vauxhall Calibra Turbo. Its in excellent condition and works 100%. The tee piece and silicon tube are included, 2" bore from...