A Gate valve is a type of attack on a block flow system tubing set. These valves prevent easy passage of fluid through a block that slides in and out of the pipe. In most cases, the lid is fully open or fully closed. Therefore, these valves often as a means of flow control is used, often stop flowing completely or not used. Partially closed valves can increase the pressure on a system in an unpredictable manner or vibrations in the liquid.

The construction of a slide is easy. Usually have two screw connectors that hook into the system piping. It is possible that an electrical grid, more than two connections, but it is very rare. We get up after the call bell above the limits, this field is the key and stop the mechanism for raising and lowering it. Finally, a handle, climb the top of the control at the top of the hood.

When the handle is turned, moves the plug into the valve. The decision to fall in line and blocks the passage of fluid. The valve is normally at the scene of the attack outside the valve and screw the handle, showing the relative height of the attack. The body is slightly wider than the tube connected, so that the lid completely liquid-tight on the cover of the opening and to do so.

The method used to connect the top of the valve that may affect the use of the cursor. If the hood is simply screw the valve is suitable for light. Bolted covers work well for heavy lifting, but can not be removed except for repair or cleaning. Union liaison caps can be removed easily, but also have the highest rate of the leak. The final form is a pressure-resistant cover that works well in many different environments, but also the most expensive style.

Since a valve is open or in all directions around the closed road, there should be no impact on total pressure. A well-designed Butterfly valve exactly the same size inside the tube, that any reduction or enlargement of the opening of the changes in flow velocity. If the door is closed, the pressure must be constant in the system because it has movement.