Use of Bolt Nut and Washer: Bolt Nut and Washer are used as cut-off media. When they are fully opened, the operating pressure loss of the media is small. Bolt Nut and Washer is generally suitable for applications that do not need to be opened and closed frequently and keep the valve fully open or fully closed. Not suitable for use as a regulator. The Bolt Nut and Washer, except that the disc can be raised and lowered freely, is the same as the globe valve. The disc is lifted from the sealing surface of the valve seat under the influence of fluid pressure, and the return of the medium causes the disc to return to the seat and cut off the flow. According to the conditions of use, the fin can be an all-metal structure or other forms.
Like the globe valve, the fluid passage through the lift check valve is also very narrow. Therefore, the pressure drop through the lift check valve is greater than that of the rotary check valve. The flow rate of the rotary check valve is very small. In order to make the Bolt Nut and Washer The pressure and flow parameters meet the requirements of the process, and an adjustment mechanism needs to be installed to adjust the above parameters. The main working principle of the adjustment mechanism is to change the flow area between the Bolt Nut and Washer and the valve and the valve seat to achieve the purpose of adjusting the above parameters. Bolt Nut and Washer belonging to this type are collectively referred to as control valves.
