SK EN 14454:2015

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

Asnjë informacion i shtuar.

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.