rasing and lowering the valve when needed | Forum

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alisa yan
alisa yan Oct 21 '19
A gate valve gets its name on the internal mechanism so that the flow of water. This mechanism seems as if a tiny gate that moves top to bottom on a stem, and that is rasing and lowering the valve as required connected to the handle. The handle is usually a screw handle that moves the gate along, closing and opening the valve as required here . They are best utilized in on/off applications in which the valve is needed infrequently. They are sometimes seen in home plumbing systems, though ball valves have become more popular in this subject. They are also commonly present in the coal and oil industry, pharmaceuticals, manufacturing, automotive, and marine applications. They can be utilized in high pressure and high temperature environments, so might be often obtained in manufacturing.

The most popular housing materials for ball valves are brass, stainless and PVC. The ball is normally made of chrome plated steel, chrome plated brass, metal or PVC. The seats are often crafted from Teflon, but may also be crafted from other artificial materials or metals. More information on this topic you could find on the page: Chemical resistance of materials.

Brass ball valves hold the largest share of the market. Brass is undoubtedly an alloy of copper and zinc and has now good mechanical properties. Brass valves can be used for (drinking) water, gas, oil, air and several other media. Chloride solutions (e.g. seawater) or demineralized water could potentially cause dezincification. Dezincification is really a form of corrosion where which zinc is removed from your alloy. This generates a porous structure which has a greatly decreased mechanical strength.

Trunnion ball valves produce an additional mechanical anchoring on the ball at the very top and bottom. They use a splined or keyed stem connection that eliminates any play relating to the ball and stem. V-port ball valves have a very ‘V’ shaped ball instead in the standard round hole. This allows for much more control because on the tapered opening, allowing for further linear flow.

If you're in Wisconsin or Upper Michigan and want help deciding which valve is best suited to your application, reach one of our engineers ball valve . Otherwise in case you enjoyed this article, you should check out our post about when you should use soft-seat ball valves vs. metal-seat ball valves.