Machining/welding/millwright…molten metal
- Thread starter davidwyby
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Burnham
Woods walker
You and your shop most definitely take on the big shit, and that is a fact. Not for the faint of heart.
Burnham
Woods walker
I am sure that is true from your perspective, David. From where I sit it is most impressive the jobs your shop handles daily.
davidwyby
Desert Beaver
- Thread Starter Thread Starter
- #32
That housing uses special mechanical seals for harsh environments. The o ring and seal sits in tapered recesses opposing each other. The faces are finely polished. The housing is flooded with oil and lubes the faces. Everything must be machined to put the right amount of pressure on the seals. It was a CSI reverse engineering it from destroyed. The oil fill tube got broken off and it got full of slurry and ate itself.
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Dave Shepard
Square peg, round world.
There aren't many shops like yours around here anymore. One big one closed about ten years ago when the father died. Someone asked a friend of mine, a next door neighbor, what they did there. He said, what everyone else can't. And that was when GE was hopping.
BlackSmith
Uncivil
Contamination?
BlackSmith
Uncivil
27” = 1 psi if I remember right.
Dave Shepard
Square peg, round world.
1'=.434 psi or 27.708"= 1 psi. A handy way to find the elevation of a gravity fed spring. My plumber used it often when he was in business.
flushcut
TreeHouser
What size pipe are we talking about? 1”? And does the math change as the pipe diameter increases?
BlackSmith
Uncivil
The water head pressure is not affected by total volume of water, only by the height. The total amount of water does not factor into the calculation of water head pressure, nor does the duct diameter. The only factors that matter are the height and depth of the ducts.
How to Calculate Water Head Pressure - Polywater
In infrastructure hardening, particularly when sealing against water, field professionals may be required to calculate water head pressure.
www.polywater.com
Dave Shepard
Square peg, round world.
However, in a water ram system, you can increase effective head pressure by coiling the inlet pipe. This increases the water column without raising the actual vertical distance due to it being a dynamic system.
BlackSmith
Uncivil
Static vs Dynamic head pressure. Now you’re getting into mathematical formulas I forgot 45ish years ago. I do remember dynamic head depends on the kinetic energy produced by the volume of flow and a dozen other variables I never had use for outside of the classroom.
Burnham
Woods walker
The breadth and depth of knowledge here in the THouse never ceases to astound me. 
Dave Shepard
Square peg, round world.
I know someone who git all the kids in school to time their toilet flushes in the entire school. He calculated the distance of the water main to be about five miles. When all the toilets shut off at the same time, that five mile column had nowhere to go. Blown water main outside the school. 60 something years ago. Today there would be a standpipe to take the increased pressure.
Marc-Antoine
TreeHouser
So, it's a lost oil system, but what consumption of oil it involves ?
BlackSmith
Uncivil
Sand screw?
