Pajisje për të parandaluar ndotjet nga rrjedhjet e ujit të pijshëm - Mbajtës i kontrollueshëm i rrjedhjes me zonë me presion të reduktuar.

Devices to prevent pollution by backflow of potable water - Controllable backflow preventer with reduced pressure zone - Family B - Type A

Asnjë informacion i shtuar.

The purpose of this standard is to define - the field of application; - the dimensional, physico-chemical, design, hydraulic, mechanical and acoustic characteristics; - the working and the prescriptions for the tests to check , these characteristics; - the marking and the presentation. To be adhered to for reduced pressure principle backflow preventers, controllable BA.