Cast floating ball valves are designed with a ball that floats within the valve body, providing a reliable seal by pressing against the valve seats. These valves are manufactured using casting processes, which allow for complex shapes and robust construction. Suitable for a wide range of applications, they offer excellent performance in high-pressure and high-temperature environments. Cast floating ball valves are known for their durability, bi-directional sealing, and ease of operation, making them ideal for various industrial and commercial uses.
Design & Features for Casting Floating Ball Valves
Applicable Standards
Basic Design: API 6D, ISO 17292, BS 5351, API 608
Face to Face: ASME B16.10
Flange End: ASME B16.5
Butt Welding End: ASME B16.5
Test and Inspection: API 598
Fire-safe Test: API 607 / API 6FA
Fugitive Emission Test: ISO 15848-2
Pressure & Temp.: ASME B16.34
Sour: NACE MR 0175
Blow-out Proof Stem
The stem is designed with a shoulder that is retained by the body preventing the stem from being blown out from internal pressure.
Anti-static Device
The anti-static device is designed between the ball, stem, and body to maintain electrical continuity and avoid static charges.
Unique Seat Design
A special integral seat lip provides a tight seal under both low and high pressure while maintaining low operational torque.
Fire Safe Design
External leakage prevention:
A fire-safe gasket and a metal-to-metal sealing face are designed in the body-cap area, and a metal-to-metal sealing face is designed in the stem area. After a fire, the body-cap gasket and metal sealing face prevent external leakage.
Internal Leakage Prevention:
After the soft seat is destroyed by fire, the fluid pushes the ball against the metal sealing face on the valve body to prevent flow.
Adjustable Packing Design
KFTE cast floating ball valves are designed with an adjustable stem packing flange. This allows tightening of the packing bolts to ensure sealing performance. The packing material can be graphite or PTFE V-packing. There is also an available live-loaded packing design for severe service. This design utilizes disc springs to maintain adequate tightness to the packing.
Locking Device
Both lever and gearbox operated valves offer a locking point at the full open and full closed positions to protect valve against unauthorized operation. Please note the padlock is not provided standard, it can be provided upon request.
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