ČSN EN 15096   (755429) Zařízení na ochranu proti znečištění pitné vody zpětným průtokem - Hadicové spojky se zavzdušňovací armaturou - DN 15 do DN 25 včetně - Skupina H, druhy B a D - Všeobecné technické specifikace

Anotace textu normy ČSN EN 15096   (755429)

This document specifies:

a) the field of application,

b) the requirements of hose union anti vacuum valves,

c) dimensional and physio-chemical properties, and properties of general hydraulic, mechanical and acoustic design of hose union anti-vacuum valves of nominal sizes DN 15 up to and including DN 25,

d) marking and technical product information.

This document specifies the characteristics of hose union anti-vacuum valves of nominal size DN 15 up to and including DN 25 that are suitable for use in drinking water systems at pressures up to and including 1 MPa (10 bar) and temperatures up to and including 65 °C and for 1 h at 90 °C.

HB protects against back siphonage only and is installed in vertical downward flow position.

HD protects against back flow and is installed in vertical downward flow position.

HB and HD anti-vacuum valves are for installation exclusively at the connecting point between stop valve and hose in vertical downward flow position.