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"Sincerity, Innovation, Rigorousness, and Efficiency" is the persistent conception of our company for the long-term to develop together with customers for mutual reciprocity and mutual benefit for Cast Steel Ball Valve,Cast Steel Mounted Ball Valve,Cast Steel Trunnion Ball Valve, Adhering into the business enterprise philosophy of 'customer initial, forge ahead', we sincerely welcome purchasers from at your home and abroad to cooperate with us.
Cast Steel Ball Valve, Our company adheres to the spirit of "lower costs, higher quality, and making more benefits for our clients". Employing talents from the same line and adhering to the principle of "honesty, good faith, real thing and sincerity", our company hopes to gain common development with clients from both at home and abroad!

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    Yongyuan works as a China based OEM manufacturer for oilfield threaded ball valve. By utilizing our expertise in design and manufacturing, we provide NPT ball valves for oil and gas industry. All these valves conform to NACE MR0175 requirements. They’re full opening to ensure a low pressure drop. Body materials are available in cast iron and cast steel. NPT threaded ends are on both sides.
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    Yongyuan works as the reliable grooved ball valve reduced port manufacturer in China. The end-entry valve designed for WOG services, normally used in oil and gas fields. It has a blow-out proof stem design, with low operating torque and high CV. Grooved end dimensions conform to AWWA C606. The working pressure is 1000psi for 2”-4” and 1500psi for 6”.
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    API 6D Wafer Swing Check Valve

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  • Threaded Swing Check Valve

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    Threaded swing check valves are main products made by Yongyuan in China. These valves are designed to prevent backflow of liquid or gas in pipeline. Materials of construction conform to NACE MR0175. Solid stainless steel clapper and hanger reduce the need for separate pins and rollers. They’re available in sizes 1” to 4”, pressure from 2000psi to 5000psi. NPT threaded ends are on both sides.
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  • Ball valve basic information

    The ball valve came out in the 1950s. With the rapid development of science and technology, the continuous improvement of production technology and product structure, in just 40 years, it has rapidly developed into a major valve type. In Western industrially developed countries, the use of ball valves is increasing year by year.

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    The sealing ring is made of alloy steel surfacing, so the hard-sealed ball valve will not cause much wear when opening and closing. (Its hardness coefficient is 65-70)

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    ​Ball valve is a commonly used fluid control valve with the following main characteristics: simple and reliable, compact structure, light operation, good sealing performance, small fluid resistance, and wide application range.

  • Ball valve introdiction

    A ball valve is a type of valve which uses a hollow, spherical body (the ball) to control flow through it. The ball can be rotated (either manually or with an actuator) to change the flow of the fluid.

  • What is the difference between trunnion mounted ball valve and floating ball valve?

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  • The key role and selection points of threaded check valves in industrial fluid systems

    In industrial fields such as petroleum, chemical industry, and electric power, the safety and stability of fluid transportation systems directly affect production efficiency and equipment life. As an indispensable "one-way checkpoint" in the pipeline system, the threaded check valve has become the preferred control element for small and medium-sized pipelines due to its compact structure, reliable sealing and convenient installation characteristics. This article will discuss its technical advantages and industry experience in selection in combination with actual application scenarios.

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