Cast 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.