Why natural gas pipelines must use forged steel ball valves

October 10, 2018

Why natural gas pipelines must use forged steel ball valves

The natural gas pipeline forged steel ball valve is a forged steel structure, which is especially suitable for working conditions of gas, purified natural gas, acid natural gas, water, coal slurry and oil. It is suitable for oils with Class150~Class1500 and working temperature of -28~300°C. In the pipelines of various working conditions, such as chemical and thermal power stations, it acts to cut off or turn on the medium. Because the material of the forged steel ball valve is also carefully selected, the wall thickness of the valve body and the bolt strength of the valve body are in accordance with the requirements of the American standard ASME B16.34, and are strictly calculated to ensure the corresponding valve body pressure level and joint. Reliable strength.

The ball adopts a fixed structure, a floating valve seat, which can achieve a small torque under operating pressure. A metal bushing with self-lubricating PTFE is used to cooperate with a high-strength, high-gloss valve stem to minimize the friction coefficient.

The pipeline forged steel ball valve uses a polymer material as the seat seal, and the seal seat is spring-loaded, which has excellent sealing performance over a wide range of temperature changes and pressure changes, ensuring a bubble-free seal under the closed pressure difference, and The minimum operating torque can be maintained at the maximum differential pressure.

The specifications and pressure ratings of forged steel ball valves meet the requirements of American Petroleum Institute API 16D/ISO 14314, China GB/T 19672 and American ASME standards. Depending on customer requirements, the valve may be available in accordance with the American Society of Corrosion Engineers NACE MR 0175 or NACE MR 0103.

The design and manufacturing quality system of the ball valve is based on the ISO 9001 quality system standard and the API Q1 quality outline specification. It is approved by DNV Classification Society and the American API Petroleum Institute, and conforms to the ISO 9001 quality system standard and conforms to API Q1 and API. 6D specification, and authorized to use API Monogram, certificate number is API 6D-0652.

Pipeline forged steel ball valve has a variety of materials to choose from, the specification and pressure level are complete, all pass and shrinkage, oil, natural gas, chemical raw materials and other pipelines are widely used in the ideal valve.