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

Fully welded ball valves - designed for heating networks and centralized heating systems!

Thermal pipelines are confronted with multiple challenges such as high temperatures, thermal cycling stress, underground damp environments and insulation requirements. Our fully welded ball valves are specially optimized for district heating (DN50 ~ DN1400), high-temperature hot water and steam systems, perfectly combining the zero leakage advantage of fully welded structures with the special requirements of thermal pipelines

Performance and security advantages

Buried application: The fully welded structure can be directly buried underground without a valve well. Combined with an extended valve stem, it can be operated on the ground

Stable operation: No problem of loose bolt connections, combined with self-lubricating valve seats and dust-proof spherical surfaces, long service life

Pigging capacity: Full bore design, ball holes are consistent with the inner diameter of the pipe, pressure loss is nearly zero, and it supports the smooth passage of pigging devices

Fireproof and anti-static: It uses a graphite-metal composite fireproof secondary seal. Even if the primary seal is burned in an accident such as a fire, the ball will automatically press against the metal valve seat under differential pressure to maintain effective blocking, meeting the API 607 fireproof requirements. And it is equipped with an internal anti-static device

Typical applications: natural gas distribution stations, high-pressure long-distance pipelines, buried urban gas pipeline networks, heating pipeline networks, crude oil and refined oil pipeline networks