Easy water supply/flush connection
- Thread starter brenkco
- Start date
Correct.........and the same issue exists if you use a 2-way hose splitter right at the connection into RV park hose bib.....just look inside the splitter and you can see the inside diameter reduction of the valve used. It really doesn't matter to most, but I was drinking at the campfire one night and thought.......what if I could take a shower at the same time the wife decides to do the dishes?I understand. I think he recognized that he would loose flow if he used a single splitter and that was why he used the quad splitter with the washer hose. But I could be wrong. What say you Mr. RockDr896?
BryanValRox
Elite Member
You had me at drinking around the campfire!!!!!!!!!!!
Midnight Rider
Prominent Member
The Sea Monster! 🦑🦑🦑🦑
Creek Jenkins
Well-known member
A 3/8” diameter tube has almost exactly one fourth of the area of a 3/4” diameter tube, so by using two 3/8” diameter valves you still have only half the area of your original 3/4” tubing. It is better than one valve but it is not equal to the original diameter.
Also, flow through a tube does not have higher velocity in the center. With all of the fittings, diameter changes, tubing bends, these manifold set ups will always have turbulent flow, in other words, widely varying velocities across the internal area of the tube. Turbulent flow causes a pressure drop, pressure drop decreases flow. If you have a very long straight tube, you can achieve laminar flow, which would mean uniform velocity all across the area of the tube and low pressure drop.
At the relatively low tube velocity through these waterlines, turbulent v laminar flow isn’t contributing much to the pressure drop. Diameter changes are the biggest factor I would wager.
Cheers
Creek
Also, flow through a tube does not have higher velocity in the center. With all of the fittings, diameter changes, tubing bends, these manifold set ups will always have turbulent flow, in other words, widely varying velocities across the internal area of the tube. Turbulent flow causes a pressure drop, pressure drop decreases flow. If you have a very long straight tube, you can achieve laminar flow, which would mean uniform velocity all across the area of the tube and low pressure drop.
At the relatively low tube velocity through these waterlines, turbulent v laminar flow isn’t contributing much to the pressure drop. Diameter changes are the biggest factor I would wager.
Cheers
Creek