Dafram 16STA Ball Valve

All FLOATING BALL VALVES are manufactured according to BS5351 (API-6D and B16.34 available upon request), and supplied complete of UNI/EN 10204 3.1B certificates showing the materials mechanical and chemical properties plus the pressure tests and any other special tests performed. Tests are carried out as standard to BS 6755 part 1 or according to other international rules upon specific request by the user. All valves are equipped with antistatic device, anti blow-out stem, flanged ends ANSI B16.5 or DIN with different finish: RF, RFS, RTJ or with special finish BW, PE, SW, HUB. Most of the valves are with standard ISO 5211 TOP FLANGE to ensure easy mounting of any actuation system. Fire Safe Certified executions to BS 6755 part 2 and API 607 4th Edition are available for all valves’ types; TA-LUFT low emission certificates are available for most common types and executions. Special accessories may be installed on the whole range, such as: Gearboxes, Actuators, Chain Wheels, Locking Devices, Stem extensions for insulation, cryogenic and high temperature service, limit switches, pup pieces, heating jackets.

BALL VALVES FOR FUGITIVE EMISSIONS DAFRAM’s ball valve range may be supplied with special stem extensions to reduce the fugitive emission to the environment and equipped with stem leakage detection plugs. Most of the standard valves are TA-LUFT certified while special executions may be tested and certified with Helium tests according to the following methods: • Quantitative : VACUUM - ASME V Art. 10 App. V par. 1062.2 (Hood Technique) for leakage of 1x10-6 mBar x L / sec. (this test is able to quantify the leak entity) • Qualitative : SNIFFER METHOD - ASME V Art. 10 Par. 1000 “Detector Probe Technique” - for leakage of 1 x 10-6 mBar x L / sec. (this test is able to verify if the sniffer detects a leak within its sensitivity range) Both tests are carried out at the DAFRAM quality laboratory by our Level 2, ASNT TC-1A: 2001 Qualified Inspectors