SSH EN 14454:2005

Pajisjet për të parandaluar ndotjet nga kthimi mbrapsht i ujit të pijshëm - Parandaluesi i kthimit mbrapsht DN 15 deri DN 32 - Familja H, tipi C

Devices to prevent pollution by backflow of potable water - Hose union backflow preventer DN 15 to DN 32 - Family H, type A

Scope

This document specifies:
a) field of application;
b) requirements for hose union backflow preventer;
c) dimensional and the physico-chemical properties and the properties of general hydraulic, mechanical and acoustic design of hose union backflow preventers DN 15 to DN 32;
d) test method and requirements for verifying these properties;
e) marking and presentation;
f) acoustics.
This document specifies the characteristics of hose union backflow preventers DN 15 to DN 32 that are suit-able for use in drinking water systems at pressures up to 1 MPa (10 bar) and temperatures up to 65 °C and for 1 h at 90 °C.

Related directives

Directives related to this standards.