Feem ntau, PPR hlab nrog qhov kev nyab xeeb ntawm 1.25 tuaj yeem xaiv tau thaum qhov kev pabcuam tsis muaj kev cuam tshuam tsawg dua 70 degree. Yog tias qhov kev pabcuam kub ntawm PPR yeeb nkab yog siab dua lossis sib npaug li 70 degree, nws yog nyob rau hauv siab - kub ua haujlwm. Yog li ntawd, PPR yeeb nkab nrog kev nyab xeeb ntawm 1.5 yuav tsum tau xaiv.
Yog tias koj xav siv nws hauv cov dej txias, koj tuaj yeem xaiv PPR yeeb nkab nrog lub siab ntawm 1.0 thiab 1.6Mpa. Yog tias koj xav siv nws hauv cov dej kub, koj yuav tsum xaiv pN2 lossis ntau dua 0 MPa PPR yeeb nkab. Tom qab xav txog cov ntsiab cai tseem ceeb no, SDR coefficient ntawm cov yeeb nkab fittings tsis tuaj yeem siab dua li cov kav dej, uas yog, qhov tuab ntawm cov yeeb nkab phab ntsa ntawm cov yeeb nkab fittings yuav tsum ntau dua li cov kav dej ntawm tib cov qauv.
PPR cov kav dej tuaj yeem txuas nrog cov kav dej PPR hauv ntau txoj hauv kev tshwj tsis yog cov xov txuas. Lwm txoj kev sib txuas yog kub-kev sib txuas, kom cov kav xa dej tuaj yeem ua tag nrho thiab yuav tsis muaj qhov to.