CPVC has many different connections available. It can be socket fused, cemented, grooved, threaded, and welded. It has higher tensile, greater impact resistance. See ASTM 1784 and mentioned references. Also note; if it is applicable, is the Flame Spread which is the same for Pvc. CPVC is...
I would suggest a CPVC or ABS for larger size pipes and PolyPropylene (PP) in the smaller. For mobile consideration I would be cautious with the joining methods. Cement joints would be vulnerable to vibrations however mechanical or welded joints will endure. Look a Georg Fischer Piping, they...
CASTI Guidbook to ASME 31.3-Process Piping ISBN 1-898038-86-X See Chapter 6 Flexibility Analysis of Piping Systems
This book covers the requirement of flexibility 31.3. It covers factors, formulas, and considerations to be taken during the analysis.