Fully Welded Ball Valve for Oil & Gas Industry

What Is a Gas Ball Valve?

A gas ball valve is a quarter-turn valve used to control the flow of gas, vapor, and air. They provide effective fluid flow control, as well as, regulate even combustible mediums which is why they are used in services that work with corrosive materials and fire protection. They are favored for their ease of shut-off and sealing and their prevention of backflow of liquid and gaseous materials.

The Advantages of Gas Ball Valves

Gas fully welded ball valves offer a range of benefits for industrial gas system applications, with few drawbacks. The advantages of choosing a ball valve include:

• Versatility – Performs in a broad range of industrial applications
• Efficiency – Works at low torque with a bubble-tight seal
• Ease-of-use – The lightweight and compact design removes frustration from use and installation
• Affordability – Lower cost than valves of a similar rating
• Simple maintenance – Reliable operation and easy to repair
• Strength – Dependable performance in high-temperature, high-pressure, and high-volume applications
• Durability – Robust operation with a long service life

What Ball Valves Are Approved for Natural Gas?

Fast shut-off and tight seals are the reasons why it is good to choose a ball valve for a gas pipeline. A floating ball valve performs well in low to medium-pressure pipelines while a trunnion-mounted one is better for high-pressure applications.

Brass Ball Valve for Natural Gas

A Brass Ball valve is favorable for uses that involve high temperatures because of its high melting point. It also has high resistance to corrosion. These characteristics make it an ideal valve for natural gas applications.

Stainless Steel Gas Ball Valve

The advantages of a stainless steel gas ball valve lie in its durability and robustness. It is resistant to both abrasion and corrosion and requires less maintenance compared to its other counterparts. It is also ideal for use in high-pressure and high-temperature applications, as well as, extremely low temperatures.

Full Port Gas Ball Valve

A Full Port Gas Ball valve maintains the flow according to the pipe's diameter, sustaining a consistent flow rate throughout the valve. Its design reduces pressure drop and avoids cavitation and build-up.

3 Way Gas Ball Valve

A 3 Way Gas Ball Valve is special because they can may not only be used to shut off flow, but can also be used to switch and combine flow from different origins, and alternate flow to different destinations.

Advantages of Buried Fully Welded Ball Valve

Safe To Use

Because of the accidental failure of the valve seat caused by media objects or fire accidents, the greasing valve provides a fast connection to the grease gun so that the pump can inject the sealing grease into the sealing parts easily and quickly, easing leak problems.

Reliable Stem Sealing

in addition to the standard sealing ring, there is also an O-ring sealing ring at the packing gland so as to double ensure reliability.

Full Bore Or Reduced Diameter

you can use the full bore or reduced diameter structure according to the need. For a full bore valve, its flow aperture is consistent with the pipeline's inner diameter, which makes it easy to clean the pipeline.

Stem Can Be Lengthened

according to installation or operation needs, the valve stem can be lengthened. The lengthened stem is especially suitable for city gas and other occasions that need underground laying pipelines. What's more, extended size is determined by customers' needs.

Flexible Operation

with a small friction coefficient and good self-lubricating properties of the valve seat and stem bearings, it will greatly reduce the operating torque. Therefore, for buried full welded ball valves, you can flexibly operate the valve freely for a long period even without sealing grease.

Operating Precautions of Buried Fully Welded Ball Valve

• Remove the protective cover at both ends and check whether the valve hole is faulty and clean. If there is foreign matter clean it up to avoid foreign matter between the groove and the ball to damage the sealing surface of the valve seat.
• Try to open and close the ball valve several times to confirm whether the ball valve can work properly.
• Between installing the ball valve to the pipeline, the welded surface of the pipe should be wiped clean. When installing the ball valve, it is not necessary to pay special attention to the installation direction of the ball valve.
• Open the ball valve to be welded to avoid welding slag entering the valve during the welding process.
• When installed horizontally, the valve must be fully open to avoid welding sparks from injuring the ball surface. When installed on a vertical guestway, the valve must be safely open if welding the upper interface; if welding the lower interface, the valve must be completely closed to avoid high heat burns inside the valve.
• After welding is completed, wait for the valve to cool completely before operating the valve on and off.
• When installing the turbo vortex actuator (valve size DN200 and above or special customization), first adjust the actuator switching position according to the valve switching position with reference to the arrow indication direction (shut off, open on), so that the arrow indication switching direction of the actuator is consistent with the valve switching position. Dock the actuator with the standard flange of the valve body correctly and adjust the position of the limit bolt appropriately so that the valve can be completely closed and opened, which can refer to the arrow indicating direction.