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China 4 inch Female Thread Brass Ball Valve Manufacturers, Suppliers, Factory

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  • Gas ball valve

    Gas ball valve

    Milestone factory specializes in manufacturing of Gas ball valve. Gas ball valve refers to long-distance pipelines suitable for natural gas, artificial coal-to-gas, and liquefied gas, and urban gas transmission and distribution network. It is manufactured in accordance with the requirements of GB/T12237-2007, GB/T12224-2005 and related valve standards. Ball valves with fire-proof, anti-static, safe, reliable, and high anti-corrosion performance. It can be specially used for natural gas, coal gas, liquefied gas and other gas and non-corrosive gas pipeline control and flow control.
  • Stainless Steel Worm Gear Flange Trunnion Mounted Ball Valve

    Stainless Steel Worm Gear Flange Trunnion Mounted Ball Valve

    You can rest assured to buy Stainless Steel Worm Gear Flange Trunnion Mounted Ball Valve from our factory and we will offer you the best after-sale service and timely delivery. In addition to the product list below, you can also customize your own unique Hastelloy Alloy Material Ball Valve according to your specific needs.
  • High Performance Butterfly Valve

    High Performance Butterfly Valve

    High performance butterfly valve has super unique product structure and special floating seat design. According to the direction of pressure source, high performance butterfly can automatically adjust the seat position to achieve the effect of double-sided pressure holding of the valve, and increase the service life of the valve seat. The service life of the valve seat can reach more than 500,000 times. The special dust-proof design of the valve shaft prevents the fluid from entering the valve shaft and causing the valve shaft stuck
  • Pneumatic Actuated Ball Valve

    Pneumatic Actuated Ball Valve

    Pneumatic Actuated Ball Valve is composed of high precision pneumatic actuator and precision casting ball valve; it is divided into two categories: pneumatic on-off ball valve and pneumatic shut-off ball valve. Milestone Valve Company can produce various high-end Pneumatic Actuated Ball Valves such as pneumatic flange ball valves, pneumatic wafer ball valves, pneumatic internal threaded ball valves; MST's Pneumatic Actuated Ball Valve can be used in various fields such as petroleum, chemical industry, metallurgy, power station, light industry, etc. , Get unanimous feedback from users.
  • Pneumatic Three Way Ball Valve

    Pneumatic Three Way Ball Valve

    Pneumatic Three Way Ball Valve means a regular three-way Ball valve with a pneumatic actuator. Pneumatic Three Way Ball Valves are designed for quick opening and closing. A well-engineered combination of a powerful pneumatic actuator, fitted to heavy duty high performance ball valve. 
  • Stainless Steel Fixed Ball Valve

    Stainless Steel Fixed Ball Valve

    Compared with the floating ball valve, the force produced by the fluid pressure in front of the valve on the ball is all transferred to the bearing, so the ball will not move to the valve seat, so the valve seat will not bear too much pressure; Moreover, the Stainless steel fixed ball valve has small torque, small deformation of valve seat, stable sealing performance and long service life, which is suitable for high pressure and large diameter applications.
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  • Differences Between Gate, Globe and Check Valves

    Gate valve: it is the most commonly used valve in pipeline system. It is a general service valve, mainly used for switching, non throttling applications. Fully open or fully closed, not used to regulate flow. A partially open gate valve will accelerate corrosion caused by merchandise in the pipe and will damage the seat in a short time. Gate valves are an economical and effective way to provide high quality seal valves with high temperature tolerances.

  • Check valve installation method

    wing check valve: The disc of the swing check valve is disc-shaped and rotates around the rotating axis of the valve seat channel. Because the channel in the valve is streamlined, the flow resistance is smaller than that of the lift check valve. It is suitable for large-diameter occasions with low flow velocity and infrequent flow changes, but it is not suitable for pulsating flow, and its sealing performance is not as good as the lifting type.

  • What Should be Paid Attention to When Using and Installing the Wafer Check Valve

    Wafer check valve is a kind of check valve. Check valve refers to the valve that automatically opens and closes the valve flap depending on the flow of the medium itself, and is used to prevent the medium from flowing back. It is also called check valve, one-way valve, reverse flow valve, and back pressure valve.

  • Common classification of electric butterfly valve

    Electric butterfly valve belongs to a variety of electric valve and electric control valve. The connection modes of electric butterfly valve mainly include:

  • What are the standards and certifications available for side entry ball valves?

    Learn about the available standards and certifications for side entry ball valves in this article.

  • Features of Soft Seal Butterfly Valve

    With the increase of the reverse medium pressure, when the unit positive pressure between the soft-sealed butterfly valve plate and the soft-sealed butterfly valve seat is less than the medium pressure, the deformation stored in the spring of the adjusting ring after loading can compensate the soft-sealed butterfly valve plate and the soft-sealed butterfly valve seat. The tight pressure on the sealing surface of the sealing butterfly valve seat plays an automatic compensation role.

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