The gate should not be inverted (i.e. the handwheel is down), otherwise the medium will be retained in the cover space for a long time, the stem will corrode easily and is off-limits for some process needs. It is extremely inconvenient to change the packaging at the same time.

The gate should not be inverted (i.e. the handwheel is down), otherwise the medium will be retained in the cover space for a long time, the stem will corrode easily and is off-limits for some process needs. It is extremely inconvenient to change the packaging at the same time. OPEN LOG VALVE, DO NOT INSTALL underground, otherwise due to moisture corrosion of exposed stem. Lift check valve, installation to ensure that the valve disc is vertical, so that the lift is flexible. Swing check valve when installed to ensure pin is level to swing flexibly. The pressure reducing valve must be installed upright on the horizontal pipe and must not tilt in any direction.

1 direction and position

Lots of valves are trend-setting

For example, shut-off valve, throttle valve, pressure reducing valve, check valve, etc., if installed reversely, it will affect the use effect and service life (e.g. throttle valve) or will not work at all (e.g. pressure reduction). valve) and even cause hazards (e.g. non-return valve). General valves with direction markings on the body. If not, it should be correctly identified according to the principle of operation of the valve. The valve chamber around the ball valve is asymmetrical, liquid can be let through the valve hole from the bottom up, so the liquid resistance is small (determined by the shape), open labor-saving (due to the intermediate pressure), closed after the intermediate pressure packing, easy to repair, therefore the shut-off valve cannot install the truth. Other valves have their own characteristics. The installation position of the valve must be easy to operate. Even if the installation is difficult temporarily, the long-term work of the operator must be taken into account….