Technical description
KO (rising spindle) 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. This is a special type of ball valve where the ball is pressed to the seat when the valve is closing, or pressed away from the seat when the valve is opening. This design is suitable for demanding applications in various industrial sectors. It is distinguished by a long service life and serviceability. The ball valves allow the medium to flow in both directions.
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
API 608, API 6D, ASME/ANSI B16.34
Building lengths
ASME/ANSI B16.10, EN 558-2, EN 12 982
Flange dimension
ASME/ANSI B16.5, ASME/ANSI B16.47 A, EN 1759-1
Testing
API 598, API 6D, EN 12 266-1
Pressure-temperature rating
ASME/ANSI B16.34, EN 12 516-1
Dimension of welding-on ends
ASME/ANSI B16.25, EN 12 627
Special
NACE MR-01-75
Range DN (NPS): 15 – 500 (1/2″ – 20″)
Range PN (CLASS): 16 – 400 (150 – 2500)
Operating temperature range: -50°C ÷ +425°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
