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Multi Rotary Valve Electric Actuator Closed Performance Is Tight
May 24, 2017

(A) the use of water pipes on the pipeline, generally according to the following principles

1. Diameter of not more than 50mm, should adopt the cut-off valve, diameter greater than 50mm when the use of gate valve, butterfly valve.

2. To adjust the flow, water pressure should be used when the control valve, globe valve.

3. Requirements of the flow resistance of small parts (such as water pump on the suction pipe),Multi Rotary Valve Electric Actuator should adopt the gate valve.

4. Water flow to be two-way flow of the pipe should be used on the gate valve, butterfly valve, shall not use the cut-off valve.

5. Installation of small parts of the space should adopt butterfly valve, ball valve.

6. In the often open and closed pipe section, should adopt the cut-off valve.

7, the larger diameter of the water pump should be used on the multi-function valve.

(2) The following parts of the water supply pipe shall be provided with valves

1. Residential area water supply pipe from the municipal water supply pipe on the introduction of pipe section.

2. Residential area outdoor ring pipe network node, should be set according to the separation requirements. Circular pipe section is too long, it is appropriate to set the sub-valve.

3. From the residential area of the water supply pipe connected to the beginning of the branch or the end of the household pipe.

4. Household pipe, water meter and the branch riser (bottom of the riser, vertical and vertical pipe network riser upper and lower end).

5. The pipe network of the trunk pipe, through the branch pipe network connection pipe.

6. Indoor water supply pipe to the household, public toilet and other outlet of the distribution pipe, water distribution branch on the water distribution points in 3 and 3 or more set.

7. Water pump outlet, self-irrigation pump suction pump.

8. Water tank inlet and outlet pipes, drain pipes.

9. Water supply pipes such as equipment (eg heaters, cooling towers, etc.).

10. Water pipes (such as large, urinal, washbasin, shower, etc.).

11. Some accessories, such as automatic exhaust valve, pressure relief valve, water hammer eliminator, pressure gauge, sprinkler, etc., before and after the pressure reducing device and so on.

12. Set the drain valve at the lowest point of the water supply network.

(C) check valve should generally be installed according to its parts, the valve before the water pressure, closed after the closed performance requirements and the closure of the water hammer caused by factors such as the size of the choice

1. Valve before the water pressure hours,Multi Rotary Valve Electric Actuator  should use the swivel, ball and shuttle check valve.

2. Close the closed performance requirements tight, it is appropriate to use a closed spring check valve.

3. Require to weaken the closure of the water hammer, should use the fast closing muffler check valve or a damping device slow closing check valve.

4. Check valve valve breaking or spool, should be able to gravity or spring force under the action of their own closed.

(4) The check valve shall be provided on the following pipe section of the water supply pipe

The introduction of the tube; closed water heater or water equipment into the water pipe; water pump on the water pipe; out of the water pipe combined with a pipeline of water tanks, water towers,Multi Rotary Valve Electric Actuator  high water pool on the outlet section.

Note: Pipes with pipe backflow preventer are not required.

(5) The following parts of the water supply pipe shall be provided with an exhaust device

1. Intermittent use of the water pipe network,Multi Rotary Valve Electric Actuator  the end of the pipe network and the highest point should be set automatic exhaust valve.

2. The water pipe network has obvious ups and downs of the accumulation of air pipe section, has been in the peak of the section set up automatic exhaust valve or manual valve exhaust.

3. Pneumatic water supply device, when the use of automatic air pressure tank,Multi Rotary Valve Electric Actuator the water distribution network should be set to the highest point of automatic exhaust valve.