Some claim that good air control can make this a quiet system. The vertical standpipe often necks down just above the standpipe (At this time I don’t know if it helps flow better or if PVC DWV or ABS fittings are used which are cheaper and are better for slip fitting use, but only come in the larger sizes). It usually has some form of adjusting the holes size to control air flow. The air vent is at the highest point of the tube. Having the entrance under water helps muffle the sound. In other words, you tune the air flow in a Durso standpipe and tune the water flow in a Herbie.īasically, the typical Durso standpipe is an upside-down U with the water entrance under water. Of course, there is no reason an emergency standpipe cannot be used in addition. And if it ever clogs, there is no backup. However, the larger the pipe, the noisier it will be. The key principle is that you can adjust the airflow in the vertical pipe to quiet the flow and prevent a siphon from developing. Plus, you can use it on tanks that only have one return in the overflow. It is the cheapest as it only requires one bulkhead and drain line, and it can be used with a siphon from the tank to the overflow box in applications where a new bulkhead is not possible or warranted. There are 2 advantages of using a Durso standpipe for the overflow.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |