PS10A / PS40A Series pressure switch PS10A series is a pressure type flow detection switch, into PS10-1A (including an SPDT contacts), PS10-2A (including two SPDT contacts), in the wet, dry and pre-action system in Jiangxi Guangzhou FM certification spray product, connected to the valve flow alarm interface pipe, according to the flow monitor whether the valve is open. Only one sprinkler head movement can flow pressure switch operation. In the pre-action system connected to the outlet valve at the pipeline pressure monitoring system, when the pressure decreases, issue a low pressure alarm signal. Operating pressure can be between 4-20psi (0.28-1.38bar) regulation. Switch must be installed vertically. RV-1 straight type and angle type fire with pressure relief valve holding pressure RV-1 type holding pressure relief valve is specially designed for the fire system. Pressure relief valve on the pilot valve through the automatic control of Jiangxi Guangzhou FM certification spray products, flow changes in the system, fire protection system can maintain the pressure at the set value. When the system pressure exceeds a set value, Jiangxi Guangzhou FM Approved sprinkler products, pressure relief valves automatically open to the excess flow back to the fire sprinkler water tank Jiangxi Guangzhou FM certified products, to keep the system pressure constant. When fire protection system stops working, pressure relief valves are open, will pump all traffic back to the tank, then the system check valve is closed, isolating fire pumps and systems, the system against pressure shocks. When the pump is closed, the pressure relief valve automatically shut down slowly. RV-1 type valve is a hydraulic valve controlled by the pilot valve, providing maximum control accuracy. Pressure relief valve is normally 'T' connected to the fire pipe installed between the fire pumps and sprinkler system valve Tianjin FM certified products, Shanghai FM certification spray products, a mechanical and electrical Anyuan Anyuan by the Hubei Chong Electrical Equipment Co. liability company. Hubei Chong Anyuan Electrical Equipment Co., Ltd. (www.hbcay119.com) (www.hbcay119.com) is a professional "FM certified fire protection products, fire sprinklers, valves, gas fire extinguishing equipment, foam fire-fighting equipment," the company. Since its inception, we adhere to the "good faith, sound management" approach, the courage of healthy competition in the market, so "TYCO fire sprinklers, Wei Lung valve, the United States ANSUL gas foam extinguishing system" brand has a good reputation. We adhere to the "service first, customer first" principle, so creating Anyuan electromechanical won the trust of customers in all fire-fighting equipment, and establish a good corporate image. Special Note: This information is for reference only pictures and information, please contact us to obtain the most accurate information, thank you!