China Fully WELDED STEEL BALL VALVE Exporter, Exporters

The steel fully welded ball valve is a very common valve, its main feature is that because the ball and the valve body are welded into one piece, the valve is not easy to produce leakage during use. It is mainly composed of valve body, ball, stem, seat, gasket and so on. The stem is connected to the valve handwheel through the ball, and the handwheel is rotated to turn the ball to open and close the valve. Production materials vary according to the use of different environments, media, etc., mainly carbon steel, stainless steel, alloy steel, cast steel, etc.

Product Description

Main Use & Applications
1) City Gas
Gas output pipelines, main line, and branch line supply pipelines, etc.
2) Central Heating
Output pipelines, main lines, and branch lines of large heating equipment.
3) Heat Exchanger
Open and close pipes and circuits.
4) Steel Plants
Various fluid pipelines, exhaust gas discharge pipelines, gas and heat supply pipelines, fuel supply pipelines.
5) Industrial Equipment
Various heat treatment pipes, various industrial gas and heat pipes.
Features & Advantages
Zero External Leakage: Fully welded ball valve ensures no external leakage or related phenomena.
High Precision Spheres: Processing of the sphere is tracked and detected by advanced computer detectors for extreme accuracy.
Stress & Aging Resistant: Valve body material is identical to the pipeline material, preventing uneven stress, earthquake or vehicle load deformation, and aging.
Superior RPTFE Sealing: Sealing ring body is made of RPTFE containing 25% Carbon to ensure 0% leakage.
Direct Underground Burial: Can be directly buried without large valve wells—only shallow wells needed, drastically reducing construction cost and time.
Customizable Body & Stem: Valve body length and stem height are fully adjustable according to pipeline construction requirements.
Smooth Operation: High precision machining ensures effortless operation without adverse interference.
High Pressure Capability: Uses advanced raw materials capable of handling pressures above PN25.
Compact Design: Compared to industry equivalents, the body is compact, lightweight, and aesthetically refined.
20+ Years Lifespan: Delivers long-term reliable performance with a service life exceeding 20 years under normal operation.
Technical Specifications & Standards
Size & Pressure Rating & Standard
Size DN50-DN1600
Pressure Rating PN16-PN600, ANSI 150lb ~ 1500lb
Design Standard API 6D, ASME B16.34, BS 5351, API 608, MSS SP-72
Butt Welding Ends ASME B16.25
Face to Face ASME B16.10, API 6D, EN 558
Material Specifications
Body ASTM A105, ASTM A182 F304(L), A182 F316(L), Etc.
Trim A105+ENP, 13Cr, F304, F316
Actuator Lever, Gear, Electric, Pneumatic, Hydraulic actuators
Product Gallery
Frequently Asked Questions (FAQ)
What makes fully welded ball valves free from external leakage?

The fully welded structure integrates the valve body seamlessly without bolting joints, eliminating potential leak paths to provide total containment and 0% external leakage.

Can these valves be buried directly underground?

Yes, these welded ball valves are designed for direct underground burial. They do not require large, expensive valve chambers—only shallow ground-level access wells are needed, significantly reducing civil engineering costs.

What sealing materials are used to ensure reliable shutoff?

The sealing ring is constructed with high-grade RPTFE containing 25% Carbon, providing exceptional resistance to wear, deformation, and pressure to maintain bubble-tight zero leakage.

What are the available size ranges and pressure classes?

The valves are available in nominal sizes from DN50 up to DN1600, with working pressure ratings ranging from PN16 to PN600 (ANSI Class 150lb to 1500lb).

What is the expected operating life of the valve?

Under normal operating conditions and maintenance practices, the fully welded ball valve is engineered for a service lifespan exceeding 20 years.

Can the stem height and body length be customized?

Yes, both the overall valve body length and the valve stem extension height can be customized to match precise pipeline depth and installation requirements.

Related Products