What is the effect of low pressure on the rotary head
distribution profile? - ....ANSWER...It results in a
reduction in area coverage.
What is the difference between nominal and outside
diameter pipes? - ....ANSWER...Nominal: Not actual
size, given in inches
Outside: Actual diameter, unless preceded by
nominal
What is the relationship between schedule pipe size
and thickness? - ....ANSWER...Schedule number rises
- pipe thickness increases
, Two types of thermoplastic pipe? - ....ANSWER...A.
PVC
B. PE
Identify following pipe markings:
1. 3 in
2. PVC1220
3. Sch40
4. 160psi
5. D2841
6. Tiger Plastic Co.
7. NSF - ....ANSWER...1. Nominal pipe size
2. Type of plastic
3. Schedule (Pipe dim. ratio)
4. Pressure in lbs per square in.
5. ASTM designation
6. Manufacturer's name
7. Mark or seal of evaluating labratory
What are the two main designations of wall
thickness in PVC and PE pipe?
A. PVC
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