Technical description
K81 (floating ball) 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 ball valves allow the medium to flow in both directions. Their construction is designed to prevent the build-up of sediment in the flow channel, which would otherwise hinder the valve operation. These ball valves are designed and manufactured to ensure maximum service life and reliability. They are suitable for liquids, gases and steam.
MATERIAL SPECIFICATION
Ball 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
EN 12 516-1, API 6D
Building lengths
EN 558-1, EN 12 982
Flange dimension
EN 1092-1
Testing
EN 12 266-1
Pressure-temperature rating
EN 12 516-1
Dimension of welding-on ends
EN 12 627
Special
NACE MR 01-75
Range DN (NPS): 6 – 500 (1/4″ – 20″)
Range PN (CLASS): 10 – 160 (150 – 900)
Operating temperature range: -196°C ÷ +400°C
Connection into piping:
Flanged, Welding-on, Combinated
Control:
Hand Wheel, Hand Wheel with gearbox,
Electric actuator, Pneumatic actuator,
Without control
Top flange dimension – EN 5211
