How to choose a Knife Gate Valve

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How to choose a Knife Gate Valve

knife gate valve

As you know, for plumbing, an important piece that is being used always the valves. One of the most common types of a valve in use with the plumbing is a knife gate valve.

knife gate valve

On the valve’s market, the Knife gate valves may sell for different prices depending on the size, material, and technology it has. So that, if you want to buy the Knife Valve you must consider carefully to choose.

Plumbing has been one of the most important aspects of any home, establishment, or industry. Most commonly, this is one of the most regarded parts of the construction, next to the structure. Instead of turning to let the fluids flow through.A knife gate valve is a simple mechanism consisting of a gate that goes up and down.

There is one pro of this valve is its design. It is not large and unwieldy unlike other valves and does not take much space in any plumbing system.

The application of these valves is for fluids especially those that flow at quite a high rate of pressure. The industry can pretty much use these gate valves for any liquid it may carry. However, to secure in order to maximize the valve’s capacity and durability, enforce the user has to care for the right kind and size of the valve has to be carefully considered in order to maximize the valve’s capacity and durability.

Mostly these valves are made of either brass or stainless steel. The valve can be used for a multitude of liquids as from water to fuels like gasoline to chemicals.


Brass knife gate valves

The important notice when choosing the valve

The first important thing: To look for the proper valve is the shallowness of the valve seat. Why? Suppose if the liquids that flow through soon will bring in sediments or other debris, it may stay in the valve seat, causing the valve to close incorrectly, letting any liquid leak through.

Especially, this may be bad especially for the operation of the entire system. So that, we need to look for the valve with the shallowest valve seat but can still seal the fluids in properly.

The second thing: Selection the size of these valves. There are several of sizes from the smallest (at least being the ½ inch in diameter) to really huge applications (that can be 1 meter wide).
Because of the mobile and compact form factor of the knife gate valve, it can be really suited for any sized diameter and can carry a number of fluids that would pass through it. It is best to get the proper gate valve for a specific application.

Beside the valves by steel, there are also produced using different materials like plastic.

Plastic knife gate valves

Plastic knife gate valves

The general kinds of gate valves are used only for low-pressure applications most commonly for aquacultures like simple irrigation or plumbing, etc… And other similar applications.

The good point for this valve is they can only hold to a maximum of 30 PSI and at least 10 PSI for the larger units as plastic is not as strong as steel. So that, they are much more inexpensive than the steel ones. This is the good thing because of wanting if one fails or breaks down, it is easy to replace.

Stainless steel knife gate valves- the one can pretty much withstand corrosion and the harshness of the elements.

The limited of this kind is it can only withstand 150 PSI to avoid any serious breakages. Or other accidents that can be caused by broken gate valves.

The prices of knife gate valve

There are different prices on the market. Sometimes it may come cheap or really expensive but it is always best to properly maintain them. The value brings here is not only would it save time, it can save money as well.

There are a lot of these kinds of gate valves in the market. You can read this view of the knife gate valve selection guide to have more information on what knife gate valve to get for your needs.