 
                        WFSR-F
Pressure Activated Waterflow Alarm Switch with Retard
The Model WFSR-F is a pressure operated switch with an adjustable, instantly recycling pneumatic retard to prevent false alarms due to water pressure variation. The WFSR-F is connected into the alarm port of a wet sprinkler system alarm check valve.
 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                         
                                 
                                 
                                            
                                                                                    
                                    
                                                                     
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                