Underground Fully Welded Ball Valve

We meet the clear or potential needs of our customers with quality Axial Flow non slam Check Valve, Globe Valve, Threaded Forged Check Valve and in-depth services to achieve maximum customer satisfaction. We believe in the power of sharing and support, and work with our colleagues and partners to create a win-win situation for the future. We strengthen experience feedback, focus on summary improvement, and promote good practices to achieve standardization and specialization. We insist on taking strategy as the guide and brand as the core to provide customers with a full range of services.

 

Introduction

GZP Pipeline Ball Valves are manufactured by the latest edition of API 6D and rigorously tested to meet the same standard. They have passed the API 607 fire test standard for soft seal valves, ensuring their reliability in emergencies. Before shipment, all valves undergo a strict 100% testing process to guarantee zero leakage.

 

These valves are essential for fluid regulation and control, particularly in emergency cut-off scenarios where high safety and operational reliability are paramount. They find widespread application in petroleum refining, long pipeline systems, natural gas distribution, power generation, metallurgy, energy systems, and gas chemicals.

 

The stem of a ball valve drives the ball to rotate around its axis, allowing for closure with a 90-degree rotation and minimal torque. Ball valves are renowned for their excellent sealing performance, lightweight operation, and long service life.

 

The main construction features of GZP Pipeline Ball Valves include:

1. Body Construction: Available in 1-piece, 2-piece, 3-piece, and welded designs.

2. Port Configuration: Full bore and reduced bore options to suit various flow requirements.

3. Ball Type： Floating ball and fixed ball

4. Sealing Type: Front-seat sealing, back-seat sealing, and bi-directional sealing options.

5. Sealing Design: Multi-sealing design ensures robust sealing performance. In the event of primary seal damage or leakage, a secondary seal design provides emergency rescue capabilities. The fire-safe design forms a metal-to-metal seat in case the sealing ring is burned by fire, effectively preventing the spread of media and fire.

6. Fire Safe and Anti-Static Design: A conductive spring is incorporated between the ball and stem, stem, and body, to ground static energy through an electrostatic channel, preventing static ignition of flammable media and ensuring system safety.

7. Blowout-proof stem, automatic pressure relief design, emergency grease injection design, drain valve, locking device, anti-corrosion design, anti-sulfur design, etc.

Blowout-proof stem： The stem employs a bottom-mounting design to prevent it from being blown out by high-pressure media, even in the event of abnormal pressure rises in the valve body or ineffective packing glands.

Highly efficient sealing structure： The packing features a strategically designed V-shaped structure, which efficiently converts the internal body cavity's medium pressure and the external gland's locking force into sealing force for the valve stem.

Automatic pressure relief design： In cases where the stagnant medium experiences abnormal pressure increases due to temperature changes, the medium pressure will push the valve seat away from the ball, enabling automatic pressure relief. Once pressure relief is achieved, the valve seat can automatically reset.

Drain valve： The drain valve is designed to check for seat leaks and discharge retained media from the body cavity, thereby minimizing pollution from the media.

 

Technical data
Design	API 6D, ASME B16.34, ISO 14313, ISO 10423, ISO 17292
Pressures range	ANSI 150 ~ANSI 2500 ,PN10~PN420
Size range	DN50(2") ~DN1200 (48")
Body Material	Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel. Etc.
	NACE MR-01-75/NACE MR-01-03 Special Requirements
Face to face	API 6D, ASME B 16.10,EN 558,DIN3202
Fanged RF, FF, RTJ Ends	ASME B16.5 ≤ DN600 (24") ASME B16.47 A ≥ DN650 (26")
	BS 4504,DIN 2543-2545,EN1092
Butt-Weld BW Ends	ASME B16.25 ,DIN 3239,BS 2080, EN 12627
Temperature range	-29°~ 425°C
Design feature
Construction	One, Two, or Three piece body and Welded body
Port	Full bore and Reduced bore
Ball Type	Floating ball and fixed ball
Stem	Blowout-proof stem
Seat Sealing	Front-seat sealing, Back-seat sealing, bi-directional sealing
Valve Operation	Gear, pneumatic, Hydraulic, and Electric actuators.
	Bypasses, locking devices, extended stem, etc
Fire Safe	API 607, BS 6755, ISO 10497-5
Other design	Anti-static design, automatic pressure relief design, emergency grease
	injection design, drain valve, anti-corrosion design, anti-sulfur design, etc
Inspection and Test
Visual Inspection	MSS SP-55
Material Inspection	PMI Test----Chemical Analysis
	HB Test---Hardness Test
	UT---Ultrasonic Test
	RT---Radio-graphic Test
	MT---Magnetic Test
	NDT Test Non-destructive
Dimension inspection	According to drawings
Valve Inspection and Test	API 598, DIN 3230, EN 12266, BS 5146

 

 

 

 

 

Our Underground Fully Welded Ball Valve has reasonable production process, stable product quality, and is suitable for large-scale production. Our corporate style is: quick response, decisive decision, strict implementation, and sincere cooperation. We believe that a scientific and reasonable human resource strategy is conducive to the realization of the strategic goals of enterprise development, and the key to the formation of enterprise core competitiveness is the improvement of the level of enterprise human resource management.

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