Possibility #2 Not all asthmatics wheeze throughout an attack. Some don't wheeze at all. Sometimes lack of wheezing means they are no longer compensating so the lungs are hyper-inflated to the max and wheezing can't happen. Neither lung sounds nor O2 sats are good indicators for asthmatics. Peak- Flow meters are the best way to determine the status.
1 Answer. 0. The upper limit temperature for pressure service is 140 degrees Fahrenheit. ln structural pipe, gravity flow application in stable oils; the upper thermal limit is considered to be in the range of 160F for long term exposure; and up to 180 degrees Fahrenheit for short-term intermittent exposure.
HDPE 3408 (3608) - 345464C or E; HDPE 4710 (PE 100) - 445574C or E; MDPE Yellow Gas 2406 (2708) - 234363E; Additional Polyethylene Pipe Sizes, Pressure Ratings, and Classifications are Available. Hdpe and Mdpe Coils and Straight Length Pipe larger than 12 IPS is special order only.