Type of Valve

Valve is one component that used in so many industies over the world. Valve has varians function regarding to the condition in the industries. Valve has many type with different function and model.

1. Floating Ball Valve
In this type of valve, the ball has some freedom to move along the axis of the valve while being prevented from rotating against the stem. When line pressure is applied to the closed ball, it moves slightly (or floats) downstream to maintain contact with the downstream seat where primary sealing occurs. This design is restricted in its use by size and service pressure, as the torque required to operate the valve with these two factors

2. Trunnion Mounted Ball Valve
The ball is held in a fixed axial position by upper and lower stems (Trunnion) and can move only in a rotational mode. The seats are contained in metal carriers which are spring loaded against the ball. The line pressure applied to a closed valve increases the load on the upstream seat to effect a tight seal. Therefore, the primary sealing is on the upstream seat. Independent floating seats are spring loaded to permit draining of the body cavity effectively providing a "Double Block and Bleed" function.

3. Check Valve
The check valve is good of non-return function. It is safe, realible, and obstruction f the liquid is low. This valve is build to prevent the flow backward it is applicable to the medium of oil, chemical, etc. The sealing is based on the self-weight of the disc and the flow backward function. It allows the disc pass the hinge to circle arround the hinge pin, by contact directly with the body seal face, the check valve can interrupt the medium and force the liquid to flow in one direction only. The valve is full bore or reduce by vertical construction. The stainless or co-r-w hard sealing face is overlaying on the seal face. The seal face is overlaying on the seal face. The seal face is realible, wear-resisting, and endure the washout. Its using time is along. Valve size NPS > 6 using the eye bolt to have easy transport.

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