Technical description
L32.1 butterfly valves are controlled shut-off valves. They are designed to stop or allow the flow of the medium by external operation, either manually or via the installed drive. The medium can flow in both directions. These butterfly valves are designed and manufactured to ensure maximum service life and reliability. They are suitable for liquids, gases and steam.
MATERIAL SPECIFICATION
Butterfly valves are made from carbon and stainless steel. The material type can be adjusted according to the customer´s request to optimally suit the operating conditions.
BASIC STANDARDS FOR DESIGN
Basic design
API 609, BS 5155, MSS SP 67
Building lengths
BS 5155, ISO 5752, MSS SP 67, API 609
Flange dimension
EN 1759-1, BS 4504, DIN 2501, ANSI B16.5, JIS
Testing
API 598, EN 12 266-1
Pressure-temperature rating
ASME/ANSI B16.34, EN 12 516-1
Range DN (NPS ): 32 – 2000 (1 1/4″- 80″)
Range PN (CLASS): 6 – 100 (150 )
Operating temperature range: -50°C ÷ +550°C
Connection into piping:
Flanged – type U, LUG type, WAFER type
Control:
Hand lever, Hand lever with gearbox
Electric actuator, Pneumatic actuator
Bare shaft, Electric actuator with gearbox,
Without control
Top flange dimension – EN 5211
