PVC Valve Take Off Adaptor's fit into PVC fittings and are glued into place. The fitting provides a male BSP threaded take off for a valve to be installed into an irrigation system.Watermark Certificate of Conformity As of 2nd February 2011 HOLMAN Industries are proud to be Watermark Certified - Level 1 - Evaluated to AS/NZS 1477 PVC Pipes and fittings for pressure applications - 2006