The Greatest Guide To Trunnion ball valve

user image 2020-09-18
By: valvinoxtrunnionballvalve
Posted in: trunnion ball valve
The Greatest Guide To Trunnion ball valve

An advantage of this solution is that the operating torque is lower than with floating ball valves. When the loads on the ball get very high, the seat rings are not able to support the ball and this is the point where the trunnion design offers a solution.

Full port ball valves minimize the pressure drop that is generated by reduced port valves but they are of course more bulky, heavy and expensive. The Full port” (FB) type features a bore size (the hole of the ball) matching the bore size of the connected piping. Top entry ball valves are generally more expensive than side entry ones and have longer lead times due to the casting operations required to manufacture the body.

A stainless steel ball valve, trunnion mounted type. Trunnion valves have been introduced to cope with the size limitations of standard floating valves outlined above. Several designs of ball valves offer the flexibility of selection so that you can choose the valve that suits your requirements.

Metal seated valves can be used in high-pressure & temperature applications. This valve may be unidirectional, bidirectional, or multidirectional, depending on the number of valve ports and the number of valve seats. Refer below image for split body three pieces type valve.

As you can see in the image above, removing bonnet cover of top entry valves, allows access to valve internals for assembly, disassembly, repair, or maintenance without removing the valve from the pipeline. Ball valves are manufactured in different body arrangements. The ball type disc can be a free float or fixed in the valve body.

Check this video to know how Trunnion Mounted Ball Valve works. This cost difference becomes an important factor when the pressure class and valve size increases. Trunnion ball design required a lower operating torque.

You can see the image of a floating type valve. The floating valve is very difficult to operate when upstream pressure is high. In this article, I have covered following types of Ball Valves that used in piping.

When a port in the ball is in line, it allows flow whereas when you rotate the valve 90 degrees, solid part of the ball stop the flow. 1,318 trunnion ball valve products are offered for sale by suppliers on , of which valves accounts for 33%, pipe fittings accounts for 1%. A wide variety of trunnion ball valve options are available to you, such as casting, forged. Q3: What information do you need if I want to inquiry9 A3: The valve type, size, pressure, temperature, material, connection type, operation etc.

Vent ports located at the top of the body cavity eliminate any gas trapped in the body cavity of a fully closed valve. DRAIN AND VENT PORTS: Drain ports located at the bottom of the valve release any fluid trapped in the body cavity of a closed valve. Included, the ball valve design includes an electric conductive connection between the internal parts of the ball valve and the body, providing the anti-static function.

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