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This Type is designed to be fully open or fully closed, making a regular opening without any pressure losses & smooth flow.

It can be throttled, becuase it cases a corrosion in its internal parts, and can not be closed fully.

The manual knife valve has the advantages of simple and compact structure, reasonable design, light weight and material saving, reliable sealing, light and flexible operation, small size, smooth passage, small flow resistance, light weight, easy installation and disassembly, etc. 

It can be operated at a working pressure of 1.0MPa -2.5MPa, it works normally when the temperature is -29-650℃. 

The gate of the knife valve has a shearing function, which can scrape off the adhesive on the sealing surface and automatically remove the sundries. The stainless steel gate can prevent the seal leakage caused by corrosion. This type of valve should generally be installed horizontally in the pipeline.

Installation and use of manual knife valve:
1. Before installation, check the valve cavity and sealing surface, and do not allow dirt or sand to adhere;
2. The bolts of each connecting part should be tightened evenly;
3. Check that the packing part is required to be pressed tightly, not only to ensure the sealing of the packing, but also to ensure the flexible opening of the gate;
4. Before installing the valve, the user must check the valve model, connection size and pay attention to the flow direction of the medium to ensure the consistency with the valve requirements;
5. When installing the valve, the user must reserve the necessary space for the valve drive;
6. The wiring of the drive device must be carried out according to the circuit diagram;
7. The knife gate valve must be maintained regularly, and must not be collided and squeezed at will, so as not to affect the sealing.