Features Certified to BS6759 parts 1, 2 and 3 by SAFED. A.D.Merkblatt (TUV Approval). ASME Code Section VIII and Section XIII (National Board Approval), with “NB/UV” stamp. Stoomwezen rules A1301. UDT Poland. Chinese SQL. Australian standard AS1271. Full lift maximum discharge capability. Each valve individually tested and set. Top un-wetted guiding giving unobstructed seat bore. Positive re-seating with either resilient or stainless steel trim. Comprehensive range of accessories.