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

Electric stainless steel fixed double-ball ball valve

Design concept

The integrated stainless steel valve body integrates two fixed balls. A single valve replaces the traditional series connection of two valves, significantly reducing the length. Each ball is independently sealed, and a relief port is provided in the middle cavity to meet the dual cutting and relief functions. Stainless steel material has strong corrosion resistance. The fixed ball structure has low torque. When combined with an electric actuator, it can achieve remote dual isolation control, which is suitable for automated pipelines with high requirements for isolation reliability.

Performance advantage

Double ball integrated - Single valve integrated with dual isolation, saving installation space and pipeline costs

Double shut-off - The two balls are independently sealed. If one side fails, the other side can still be cut off

Intermediate relief - The cavity between the two balls can be depressurized and emptied to verify the sealing performance and ensure complete isolation between the upstream and downstream

Fixed ball low torque - Both balls are supported by upper and lower shafts, ensuring stable torque and can be equipped with smaller-sized electric actuators

Bidirectional sealing - Each ball is equipped with a double-piston effect valve seat, featuring low-pressure pre-tightening and high-pressure self-tightening, ensuring a full pressure difference tight shut-off

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, compliant with API 6FA

Anti-blowout and anti-static - Both valve stems are equipped with built-in anti-blowout steps and conductive springs conduct

Stainless steel corrosion resistance - The valve body, ball and valve stem are all made of stainless steel, resistant to acids, alkalis and sulfur-containing media

Application scenarios

Dual isolation upstream and downstream of the metrology station, pigging ball receiving and dispatching cylinders, LNG storage and transportation, absolute isolation pipe sections for chemical media, aviation fuel transportation, and leakage prevention points for toxic and harmful media

Driving mode

Electric actuator drive, supporting on-off or regulating control. The two balls can be independently driven or linked to achieve remote operation and local control. It is equipped with standard limit switches and overtorque protection. Optional travel testing and bus communication interfaces are available, which can be connected to safety instrument systems and upper computer monitoring.