7.2 定义 Definitions

7.2.1 WC 冲洗阀 WC flushing valve.

Valve, with electronic control of opening and closing, capable of supplying flush water so that a WC complying with EN 997 will be cleaned.

7.2.1.1 Servo-operated hydraulic flushing valve.

Hydraulic, self-actuation flushing valve according to EN 12541, where opening and closing operation is carried out by relieving pressure on a valve piston with a magnetic pilot valve, the amount of flushing water is controlled mechanically by limiting the stroke of the valve piston.

7.2.1.2 Directly operated flushing valve.

A flushing valve that closes time-controlled and where opening and closing operation are controlled by a magnetic valve in direct flow of media, the amount of flushing water is controlled by a set flushing time.

7.2.2 WC 冲洗阀的截止阀 Stop valve for a WC flushing valve.

Device used to stop the flow upstream of a flushing valve. Such devices may be supplied as an integral part of a flushing valve, or as a separate component.

7.2.3 流量控制设备 Flow control equipment.

Manually set or automatically operated mechanism supplied integrally with either the flushing valve or with the stop valve to regulate the flow of water.

If a flow control device is supplied as part of a stop valve, the stop valve shall not be connected to the flushing valve by a thread complying with EN ISO 228-1.

7.2.4 冲洗量控制 Volume control.

Mechanism or electronic function that can be adjusted to regulate the flush volume delivered.