Forged Side-Entry Ball Valve

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

Fire Safe Seat Sealing

KFTE Forged Side-Entry Ball Valves’ fire safe is designed in accordance with API 607 & API SPEC 6FA. When non-metal resilient seats are destroyed in a fire, the upstream medium pressure push the ball into the downstream metal seat lip to cut off the line fluid and prevent the internal leakage due to a secondary metal-to-metal seals.

Blow-out Proof Stem

The stem is designed with integral T-type shoulder to provide blow-out proof effectively. It is internally inserted as the backseat function to assure stem sealing safety at all pressures.

Anti-Static Device

Antistatic devices between ball & stem and stem & body are assembled by a spring & a stainless steel ball, which ensure all metal valve parts are grounding.

Low Emission Packing

KFTE designed low emissions valve use special low emissions packing to ensure the seal of stem. The cone packing is made of expanding graphite in die-formed rings and has features of heat resistance, less stress relaxation and low creep. With this special structure, it allows for a low-friction on rotary & rising stem valve, therefore providing the stabilized sealing performance for long cycle life.

Live Loaded Gland Flange

KFTE designed low emissions valve use a set of Belleville springs installed on each gland stud to provide a continuous compressive force on gland, which guarantees permanent load retention for the stem packing to avoid fugitive emissions.