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.
No, CPVC and Schedule 80 PVC are different. Schedule 80 just refers to the thickness of the PVC pipe, and you can have schedule 80 CPVC as well. CPVC differs from PVC in chemical makeup and in how it should be used.For instance, CPVC can withstand temperatures of up to 200 degrees F while PVC is best used for temperatures below about 140F.chedule 80 just refers to the thickness of the PVC pipe, and you can have schedule 80 CPVC as well. CPVC differs from PVC in chemical makeup and in how it should be used. For instance, CPVC can withstand temperatures of up to 200 degrees F while PVC is best used for temperatures below about 140F.