Gate Valves
Gate Valves
Gate valves are available with either metal or resilient seating, depending on client requirements. They are offered with pressure ratings ranging from PN6 to PN40, ensuring suitability for various industrial applications. These valves are specifically designed for the cut-off and opening of pipeline fluid, providing efficient flow control.
Material Selection for Optimal Performance
The material of the valve should be selected based on the specific medium it will handle. Choosing the right material enhances durability, prevents corrosion, and ensures long-term reliability in various operational conditions.
Manual & Electric Actuation
Gate valves can be operated manually or electrically. In manual operation, the handwheel is turned by hand to control the movement of the gate. For electric operation, a valve actuator drives the stem up and down, enabling automated opening and closing. A clockwise rotation lowers the gate to close the valve, while a counterclockwise rotation raises it to open the valve.
Storage & Maintenance
- The valve should be stored in a dry, ventilated room, and the valve channel should be blocked
at both ends. - Valves stored for a long time should be regularly inspected and cleared of dirt. Special
attention should be paid to the cleaning of the sealing surface to prevent damage to the
sealing surface. - Check carefully whether the valve markings are consistent with the use requirements before
installation. - The inner cavity and sealing surface of the valve should be inspected before installation, and if
there is dirt, it should be wiped clean with a clean cloth. - Check whether the packing is pressed tightly before installation, it should ensure the sealing of
the packing, and at the same time should not hinder the rotation of the valve stem. - When in use, lubricate the stem trapezoidal threads frequently.
Installation and Operation
- After installation system or pipeline pressure test, the valve should be in the fully open
position. - Manual valve, in the opening or closing operation, should use the hand wheel to open and
close, not with the aid of auxiliary levers or other tools. - Electric, pneumatic valve transmission device, its storage, maintenance, installation and use,
see the “valve electric device instructions”. - The valve should be inspected regularly after use to check the sealing surface, stem, etc. for
wear and tear as well as the gasket and packing. If the damage fails, it should be repaired or
replaced in time.
