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PPR fistula specifications

2021-11-02

PPR fistulae specificationes exprimuntur per seriem fistulam S, diametram exteriorem nominalem DN, parietis nominalem crassitudinem EN.  

Exempli gratia: PPR series tubi S5, PPR diametri exterior nominalis DN25mm, PPR crassitudo muri nominalis EN2.5mm.  

S5, DN25 x EN 2.5mm  

PPR fistulae series S: series numeralis dimensiva repraesentans specificationes fistulae PPR, S = (DN-EN) / 2 EN  

Ubi: DN -- PPR diameter nominalis (diameter externus), unitas: mm  

En - PPR crassitudo paries nominalis, in mm  

Usitatius PP-R specificationum tubi sunt 5, 4, 3.2, 2.5, 2 quinque series  

PPR fistula specificata secundum mensuram quantitatis SDR valoris, PPR fistula dividitur in seriem 11, 9, 7.4, 6, 5 quinque.  

PPR mensura magnitudinis in SDR: est proportio nominalis diametri exterioris DN, et parietis nominalis crassitudinis EN fistulae PPR.  

Relationes inter seriem fistulae SDR et PPR haec est: SDR=2S+1  

PPR fistulae specificationes aptae ita exprimuntur;  

Nominales extra diametrum (DN) fistularum PPR chirographorum nominales referuntur extra diametrum fistulae PPR adnexa fistulae PPR.  Paries crassitudo PPR fistulae non minor erit quam fistulae PPR ejusdem fistulae PPR series S.  

Pleraque PPR caerimonias inceptis solum habent seriem S2, mensuram supremam, quae aqua calida et frigida aptum est.  

PPR Tube Specifications S5 Series --------------1.25 mpa (12.5 kg)  

PPR Tube Specifications S4 Series --------------1.6 Mpa (16 kg)  

PPR Tube Specifications S3.2 series ------------2.0 Mpa (20 kg)  

PPR Tube Specifications S2.5 series --------------2.5 Mpa (25 kg) 

deinde:Hdpe tube
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