Pump selection actual combat manual Index: Head outlet pressure
In particular, the above mentioned resistance can be applied when the design flow is near the rated flow of the equipment, and more often the rated flow is often greater than the equipment. Similarly, water pipe water flow calculation is recommended, check the table to take resistance value. Pump head on the issue of excessive. Design of the pump head is too large, will enable the wealthy head in exchange for increased traffic, increased traffic makes the pump noise. In particular, the increase in traffic also makes the pump motor load increases, the current increases, heat increases, "change countless times bearing" or trivia, there is a great possibility to burn the motor. In addition "pump outlet pressure is only 0.22 MPa" can explain what? Pump import and export pressure is the key issue. For example, the open system pump on top of 100 meters, the outlet pressure is 0.22MPa, this system will pump on the ground to the top of 100 meters to send, the outlet pressure is 0.32MPa it!
Rail plastic dowel is also called rail plastic sleeve/plastic insert/concrete dowel/ concrete insert, which is a counter-party fastener for a screw spike or anchor bolt, and it is pre-imbedded into the concrete sleeper or wooden sleeper, installed together with Screw Spikes, guide plates and rail clips to fasten the rail tracks.
Plastic Sleeve,Nylon Plastic Dowel,Customized Nylon Lock Dowel,Plastic Nylon Sleeve Anyang Railway Equipment CO.,Ltd , https://www.ayrailwayat.com
Rail Plastic dowel(Rail Plastic Sleeve)