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China API 6D Two-Piece Trunnion Ball Valve Manufacturers, Suppliers, Factory

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  • Cast Steel Trunnion Mounted Ball Valve

    Cast Steel Trunnion Mounted Ball Valve

    Yongyuan cast steel trunnion mounted ball valves have been pressure-tested before shipment to meet API requirements and used in transmission pipelines, terminals and storage of oil and gas fields. All these valves are in strict accordance with ASTM, API and other standards. The positive stem retention is achieved within the valve body.
  • Female Threaded Vertical Check Valve

    Female Threaded Vertical Check Valve

    Yongyuan is a leading China Female Threaded Vertical Check Valve manufacturers, suppliers and exporter.
  • Threaded Swing Check Valve

    Threaded Swing Check Valve

    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.
  • Grooved Ball Valve Reduced Port

    Grooved Ball Valve Reduced Port

    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”.
  • Female NPT Swing Check Valves

    Female NPT Swing Check Valves

    Yongyuan Female NPT swing check valves are designed to prevent backflow of liquid or gas in pipeline. Materials 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.
  • API 6D Floating Ball Valve

    API 6D Floating Ball Valve

    Yongyuan is the professional API 6D Floating Ball Valve manufacturer in China, with ISO 9001 certificate. We have been specialized in oil and gas fields for 25 years. Most of our ball valves shipped to American markets. The quality meet ASME B16.34 B16.10 B16.5 and BS5351. Carbon Steel WCB or Stainless Steel can be chosen for valve body and adapter on request. There’re three different working class 150#, 300# and 600# for selection. All valves passed through pressure test before dispatch.
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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.

  • Working Principle of Check Valve

    The working principle of the check valve essentially relies on the laws of fluid dynamics. Its core function is to regulate the opening and closing of the valve by the pressure of the fluid itself and the weight of the valve disc itself, thereby preventing the fluid from flowing in the opposite direction.

  • Precautions for Using Ball Valve

    As a key component in the fluid control system, the core of the ball valve lies in its spherical opening and closing element, which accurately controls the flow and cutoff of the fluid through rotation.

  • Selection of chemical valves

    Most of the media in chemical production equipment are highly toxic, flammable, explosive and highly corrosive. The working conditions are complex and harsh, and the operating temperature and pressure are high. Once the valve fails, the mild one will cause the medium to leak, and the severe one will cause the device to shut down Stop production, and even cause vicious accidents. Therefore, scientific and reasonable selection of valves can not only reduce the construction cost of the device, but also ensure the safe operation of production.

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