What chemical is added to resin to make it harden fiberglass
Catlyst
How is fiberglass pipe joined?
Butt and wrap
When are o ring and bell, and spigots allowed
Underground drainage
More or less support for fiberglass than steel?
Less support for fiberglass
Opperating range of fabricating fiberglass
70f to 90f
What type of copper tube can be used for gas piping?
L, K
What should medical gas be free of to avoid explosion or fire?
Oil or grease
When is flux permitted?
On disssimilar metals
What gas be present in medical gas piping when brazing
A inert gas nitrogen
What type of copper for 3” or larger?
Type k
Fitting in medical gas must be ?
Wrot copper pressure fittings
Brass bar stock and broze fittings
Be washed in a solution of trisodium phospate and hot water
Min size fitting that can be concealed when used in medical gas systems?
1/2”
Max spacing for 1/2 pipe
1.8 meters 6 feet
Max pressure test for a medical vacuum system?
415 kpa 60 psi
Lined piping If corrosion is expected what should the jacketing material be made of
304 or 316 stainless steel
All medical gas supplys have what in case or emergency?
Reserve tank
Medical gas piping should be tested at?
1.5 times working pressure or 150psig for 24 hours
Most common compresser?
Recipocating
Where is compressed air stored?
Reveiver tank
What controlls the cycle of a compresser? Cut in and cut out pressures?
Pressure switch
Another name for compressed air system is?
Pneumatic system
Whats the delta P in compressed air system
◇p?
15 psi
What pressure are pressure relief valves set at?
10 psi above the cut out pressure setting
What cools air between stages of a two stage compresser? How much does it cool the air
Pneumatic intercooler cools by 10F
