A nice weekend sidetrack if anybody is bored....
Use them all the time in the mining industry (and just about every other kind of victaulic coiper made) I only have some 1 1/4" ers at the house that will fit what we call "Mine Spray Hose" made by goodyear. Something else I have access to.. and is nice if you ever need heavy duty waterline for pump discharge or something.... Need high pressure hydrulic staple lock fittings? Brass block CONFLO water flow guages? Maybe a self rescuer or a cap lamp or two? Mine pager phones? How about a methane detector or multiple gas detector? Metacarpal gloves, full face dust filters (not paper mask)...
Hell I have a moyno concrete pump stator that will take your tinymite in one end and spit it out the other at 300 PSI at about 40 GPM... don't worry it's a somewhat fixed displacement pump, so what it does not suck in water, it will suck in as air! Actually we use it to mix lighweight air entrained concrete products and pump them over 1000' in underground coal mines.... it has one of these (well kind of) in it. check out
http://www.moyno.com/website/products/powerflow/images/product.jpg (I don't want to direct link photos from too many sites...as I am sure they don't like it.)
I am sure the lady of the house would love for somebody to come releive my house (and my fathers) of our "stuff". Somehow I think she pictures a pack ratt and is son when she dreams of us.
Now I don't have one of these
http://www.hauhinco.com/5K/5k.htm But as you can see from the specs, it will do about 140 GPM at over 6,000 PSI. It only consumes 400kW... and we run at leats 3 of them on a modern longwall to supply hydrualic pressure. 1 lead pump, 1 lag pump, and 1 standby in most cases. So figure around 1000-12000kw. They run 24/7 365. Hrmm anybody want to do the math on the electric bill? Lets see... that is 1000kWh an hour... or 24,000kWh a day (lets say at .05 a kWh) or $1200 a day just to run the pumps! They keep roof above the 1000' long face up
http://www.francisengineering.com/Face01.jpg
Add in the dual 300 horsepower head drives and tail drives... that is about 1200HP that runs pretty much 24/7.
http://www.francisengineering.com/Gearcase3.jpg
Then of course you have a dozen or more belt drives for the conveyors that are 24/7 and a few hundred to maybe a thousand HP each... Yes THAT SAYS almost 1 MILLION CFM at a whopping 15" of water!
don't forget the ventillation
http://www.spendrupfanco.com/120_fan.html fans at 24/7 and a few hundred HP each.
http://content.answers.com/main/content/wp/en/1/15/Fan,_Virginia_Coal_Mine_Ventillation.png
And the dozens and dozens of other HUGE pieces of equipment that run all day and night
http://www.francisengineering.com/services.htm
Do you want your power bill to be $15,000 a day... or maybe $20,000 a day... every day?
Sorry for the sidetrack... just got carried away with big pumps!