question regarding PVC union

rlantigua

New member
Went to Lowes to pick up some unions and 3/4, 1". noticed the inside hole
where the water will pass through was smaller than the diameter if the Pipe.

is that how they are?
 
Yeah. When you use a flow calculator for figuring out head loss this is why it takes in account for how many unions are used.
 
Some people will use fittings to increase the diameter of the PVC used before/after the union so a bigger union can be used.
 
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