10691-13-N-1-E

THE 10691-SERIES BACK PRESSURE & RELIEF VALVES RELIEVE UPSTREAM PRES SURE IN A VARIETY OF PROCESSES. 10691-SERIES HAS A SOFT ELASTOMERIC DISC FOR TIGHT SHUT-OFF. THIS VALVE AUTOMATICALLY MAINTAIN DESIRED MAXIMUM PRESSURE IN A VESSEL OR SYSTEM BY RELIEVING EXCESS PRESSURE INTO LOWER PRES SURE RE TURN LINE OR TO ATMOSPHERE. IDEALLY SUITED FOR USE AS PUMP BYPASS CONTROL VALVE BY MAINTAINING CONSTANT PUMP DISCHARGE PRESSURES. USED AS A CONTINUOUSLY OPERATING VALVE OR FOR PROTECTION AGAINST INTERMITTENT OVER PRESSURE CONDITIONS. THE 10691-SERIES BACK PRESSURE RELIEF VALVES ARE USED IN THE FOLLOWING APPLICATIONS : WATER PUMP BYPASS FOR IRRIGATION, SPRINKLER SYSTEMS ON GOLF COURSES, FOUNTAINS AND FIRE PROTECTION SYSTEMS. FUEL OIL PUMP BYPASS ON COMMERCIAL SYSTEMS OR LARGE RESIDENTIAL SYSTEMS. NOT TO BE USED ON STEAM.