VSR-F type and VS-F-type flow indicator VSR-F and VS-F type is used for wet sprinkler systems paddle type flow indicator, registered by the United States UL, FM inspection and certification, the United Kingdom LPC certified by standard 10 # -40 # steel, specifications for 50mm to 200mm. The device can also be used for large systems split device switch. The VSR-F type water means containing two SPDT delay adjustment switch valve, the operating time is adjustable knob to adjust the delay for the positive and negative direction of rotation can be. When 37.8 l / min flow rate or flow value exceeds this indicator of the impact of the pulp sheet, paddle to deflect the direction of flow and pressure valves, time delay starts timing, and so reach the set time delay valve plant, Bias paddle while still unable to return to its original position, the flow indicator output signal immediately. NOTE:. 1 VS-F type is without delay adjustment means flow indicator valve, to choose from. 2. This product is brand POTTER paute. DV-5 with a single interlock preaction pressure monitoring system (power-up or a wet or dry start to start) DN40 ~ DN200 preaction valve from the DV-5 Deluge valve and lift check valve composed of the check valve airtight when closed, so that the valve does not require pre-injection. When using electric start pre-action system, motion detection system after power is turned preaction valve diaphragm chamber drain solenoid valve, the pre-action valve is open. Year Anyuan Industrial (Figure) _ _ Castle valve Valve Factory Anyuan by the Hubei Chong Electrical Equipment Co., Ltd. to provide. Hubei Chong Anyuan Electrical Equipment Co., Ltd. (www.hbcay119.com) (www.hbcay119.com) strong, credible, in Wuhan, Hubei fire equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead electromechanical create Anyuan into the brilliant and you work for a better future!