Sistemet zjarrfikëse të palëvizshme -Komponentët për sistemet zharrfikëse me gaz -Pjesa 13 : Kërkesat dhe metodat e provës për valvolat e kontrollit dhe për valvolat e mos -kthimit

Fixed firefighting systems - Components for gas extinguishing systems - Part 13: Requirements and test methods for check valves and non-return valves

Asnjë informacion i shtuar.

This European standard specifies the requirements and describes test methods for check and non-return valves. This standard is applicable to check valves installed between container valve and manifold and non-return valves installed in pilot lines except those valves, which are tested in combination with non-electrical control devices. Non-return and check valves shall allow the passage in the direction of flow and they shall prevent flow in the reverse direction.