Top-Entry Ball Valve Adjustable PTFE Seat For on-line Maintenance
Top Entry Ball Valve is specially designed and developed for lower
operating torque and easy in-line maintenance to meet the demands
of oil and gas pipeline applications.
Top-entry ball valves are in-line field repairable, thus
eliminating long down times. The bolted construction allows
disassembly on-site for inspection and possible repair. Removal of
the bolted cover from the valve body allows access to the ball and
seats which can be removed with special maintenance tools.
The standard features for Top Entry Ball Valve include a built-in
cavity relief mechanism, Double Block & Bleed, Fire Safe Design,
Emergency Sealant Injection and ISO Mounting pad. Extended
stem/bonnet for underground service is also a typical option.
Kolink Top Entry Ball Valve could be manufactured in a wide range
of diameters and pressure classes.
Top Entry Features:
The seats are installed adjustable, and the rear ends of the seat
retainers are set in oblique angle to prevent impurities
accumulated on the seats from blocking the adjustment of the seats.
Features of Top Entry Trunnion Mounted Ball Valves:
1 Piece Body, Top Entry
Trunnion Mounted Ball
Full Port
Cavity relief mechanism
Emergency sealant injection
Fire Safe to API 607
Antistatic Device
Anti-blowout Stem
Gear Operation or Actuator Available
Optional Low emission packing according to ISO 15848
Applicable Standards of Top Entry Trunnion Mounted Ball Valves:
a) Design & Manufacture: API 6D, BS 5351, API 608, ISO 17292, MSS
SP-72
b) Fire-safe: API 607, API 6FA
c) Face to Face: API B16.10, API 6D, EN 558, DIN 3202
d) End Connection: ASME B16.5, EN 1092, JIS B2220, ASME B16.25
e) Test and Inspection: API 6D, EN 12266, API 598
