Natural Gas Industry - GRAT Explosion-Proof Pneumatic On-Off Ball Valve in Pipeline Applications

In March 2016, GRAT successfully deployed a series of pneumatic explosion-proof on-off ball valves in a natural gas pipeline project in Qinghai, China. These valves, crafted from SUS304 stainless steel and equipped with advanced explosion-proof technology (Exd II BT6), have been operational for over eight years, ensuring safe and efficient operation under demanding industry standards. 

The natural gas pipeline in Qinghai faced several challenges, including:

1. Safety: Explosion-proof equipment was essential due to the volatile nature of natural gas.
2. Durability: Long-term operation in varying temperatures and environmental conditions.
3. Efficiency: The valve needed to provide precise on-off control with minimal maintenance.

GRAT's pneumatic explosion-proof ball valves met these requirements through innovative design, incorporating:

Compact structure and lightweight design for ease of installation.

Fire and explosion-proof features to enhance safety.

Low flow resistance and high sealing performance, ensuring operational efficiency.

Flexible adjustment capabilities, allowing ±5° fine-tuning at both 0° and 90° positions.

Specifications:

• Medium: Natural gas (at ambient temperature)
• Nominal Pressure: PN64-PN100
• Size: DN80 / DN100
• Material: SUS304
• Connection Type: Flanged
• Operation Mode: On-off control
• Power Supply: DC24V
• Explosion-Proof Rating: Exd II BT6
• Design Life: 5-8 years
• Operating Date: March 2016
• Location: Qinghai, China

The installed ball valves, with flange connections, operate via DC24V power and are driven by dry or lubricated compressed air at 2.5-8 bar. These valves provide seamless on-off functionality, supporting the natural gas pipeline's operational needs while complying with strict safety regulations. Their design life of 5-8 years has been exceeded without significant performance degradation.

GRAT's pneumatic explosion-proof on-off ball valves have proven to be a reliable and effective solution for the natural gas industry. By combining advanced technology with industry expertise, GRAT continues to support critical infrastructure projects worldwide. For inquiries and technical support, please contact us.

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