Globe valve, throttle valves, pressure reducing valves, check valves and other valves are directional, if loaded flip-back, throttle will affect the results and life; valve does not function, check valves and even dangerous.
General valves, direction signs in the body; if not, should be based on the working principle of valve, correctly identified.
Asymmetrical valve valve cavity, the fluid to make it through from the bottom valve, fluid resistance (determined by the shape), open effort (due to media pressures up), close the media pressure after filling, easy to repair. That's why globe valve is not an anti-truth. Other valves also have their own characteristics.
Valve installation location must be convenient to operate; even installed some temporary difficulties, but also for the sake of long-term work of the operator.
Best valve handwheel and chest even up assemble (General operations floor 1.2 meters) so that the opening and closing valves avoid fatigue. Ground valve hand wheel facing up, do not tilt, so as to avoid awkward operation. Machine against the wall by the valve of the device, to set aside the operator standing room. To avoid going operation, particularly acids, alkalis, toxic media, or unsafe.
Gate valves do not flip (handle down), otherwise it may result in medium-term retention on the valve cover space, susceptible to corrosion stems, and taboos by certain technical requirements. Replace the packing very inconvenient.
1, pressure reducing valve to the upright installation in horizontal pipes, do not tilt in all directions.
2, lift-type check valves, vertical installation make sure that the valve flaps in order to lift and flexible.
3, swing check valve, installed to ensure that the PIN level, so as to swing and flexible.
4, rising stem gate valve not installed in the ground, or corrosion due to wet the exposed shaft.
