What is the rule of thumb for determining what standard branches (part # 3210) we can make?
Sometimes, machine layouts are such that as you go down the main line back to the collector a branch is required that is not possible to fabricate. For example, let’s say you have three machines in a production line. The furthest away from the dust collector requires a 4″ duct, the one in the middle requires a 10″ duct and the one closest to the collector requires another 4″ duct. The middle branch will probably require a configuration of say A= 12″, B= 10″ and C= 4″, where A is the outlet to the mainline, B is the “drop” to the middle machine and C is the continuation to the last machine (that is our standard way of sizing these branches). The 10″ duct will be too big to place on a tapering duct from 12″ to 4″ – it won’t fit. The solution is to order a 12″-10″-10″ branch with a 10″ to 4″ Reducer. The quickest way to calculate what can be “fabricated” is expressed in the formula “A – B has to be greater than or equal to B – C”. In the example above, A – B = 2″ and B – C = 6″ so this br
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