Applicable Standards:

Ball Valve Design Standards: API 6D, BS 5351, ASME B16.34

Face-to-Face Dimensions: ASME B16.10, API 6D

Flange Standards: ASME B16.5 / ASME B16.47

Butt-Weld End Standards: ASME B16.25

Fire Safe Testing: API 607, API 6A

Inspection and Testing Standards: API 598, API 6D

Design Features:

Structure: 2-piece or 3-piece body design

High-integrity sealing structure with low operating torque

Double Block and Bleed (DBB) function

Cavity self-relief mechanism

Fire-safe design

Anti-blowout stem

Anti-static design

Locking device (for lever-operated valves)

ISO 5211 actuator mounting pad

Emergency sealant injection function

Application Fields:

Oil & Gas: Wellhead equipment, pipeline pigging stations, storage tank inlets/outlets, oil and natural gas transmission

Chemical Processing: Reactor isolation, toxic media transport, high-pressure process lines

Energy & Power: Power generation, boiler fuel shut-off, main steam line isolation

Special Applications: Subsea pipelines, LNG facilities, strategic reserve depots

Brand: KOZO

Valve Materials: Carbon steel, high-temperature Cr-Mo steel, stainless steel, duplex stainless steel, Monel, aluminum bronze, special alloy steels, etc.

Valve Type: KOZO Ball Valve

Valve Testing: 100% tested prior to delivery

Warranty: 18 months after shipment or 12 months after installation (whichever occurs first)

Valve Structure: Trunnion-mounted ball valve

Size Range: 1/2" to 48"

Pressure Class: ASME Class 150, 300, 600, 900, 1500, 2500

Lead Time: 15 – 30 days

Samples: Samples available upon request from KOZO Valves

Valve Color: Customized according to customer requirements

Packaging: Plywood crates

Minimum Order Quantity (MOQ): 1 set

Country of Origin: Zhejiang, China (Mainland)

Shipping Port: Shanghai or Ningbo

Payment Terms: L/C, D/P, T/T, Western Union

Hydraulic forged steel fixed ball valve

Design concept

The forged steel valve body is integrated with the fixed ball structure. The ball is firmly supported by the upper and lower rotating shafts, and the medium thrust is transmitted to the bearing. The opening and closing torque is low and not affected by pressure fluctuations. The hydraulic drive system provides a stable and large thrust, and in combination with the accumulator, it automatically shuts off in case of power failure, meeting the frequent operation and emergency shut-off requirements of large-diameter and high-pressure pipelines.

Performance advantage

Fixed ball low torque - The upper and lower shafts of the ball support, and the torque does not increase sharply with pressure. It can be equipped with smaller-sized actuators to reduce the cost of the hydraulic system

Hydraulic high thrust - The hydraulic output torque is large, the operation is smooth, and there is no jamming when opening and closing under high pressure difference

Forged steel high strength - The valve body is forged into shape, with dense material, impact resistance and high-pressure fatigue resistance

Bidirectional sealing - double-piston effect valve seat, low-pressure spring pre-tightening, high-pressure medium self-tightening, full pressure difference tight shut-off

Self-pressure relief in the valve cavity - When abnormal pressure rises inside the cavity, the valve seat is released to the pipeline side to prevent excessive stress in the valve body

Full bore and low flow resistance - The flow channel is consistent with the inner diameter of the pipe, allowing it to pass through the pigging device with a small pressure drop

Safety and reliability

Fireproof - Graphite fireproof ring, high-temperature sealing, compliant with API 6FA

Anti-blow-out and anti-static - The valve stem is equipped with an anti-blow-out step and double packing. The conductive spring connects the ball - valve stem - valve body

Application scenarios

Long-distance oil and gas pipeline cutting, production manifold on offshore platforms, inlet and outlet of underground gas storage facilities, LNG receiving stations, high-pressure hydrogen refueling in petrochemicals, isolation of crude oil storage facilities, high-pressure systems in power plants