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
