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WATTS REGULATOR ..REDUCED PRESSURE ZONE ASSEMBLY (RPZ).. 3/4" .. MODEL 909QT ( 0387121)..A TRADITION OF INNOVATION AND QUALITY..FOUNDED IN 1874 BY JOSEPH WATTS, WATTS REGULATOR COMPANY MADE ITS REPUTATION BY "SETTING THE STANDARD IN VALVE TECHNPLOGY"..DURING ITS EARLY DAYS, WATTS MANUFACTURED PRESSURE REDUCING VALVES TO REGULATE STEAM AND RELIEF VALVES TO ENSURE SAFE OPERATION OF WATER HEATERS AND BOILERS..TODAY, WATTA REGULATOR IS PART OF THE WATTS WATER TECHNOLOGIES FAMILY WITH OPERATIONS IN NORTH AMERICA, EUROPE AND ASIA. WATTS DESIGNS, MANUFACTURES AND SELLS AN EXTENSIVE LINE OF FLOW CONTROL PRODUCTS FOR THE WATER QUALITY, RESIDENTIAL PLUMBING AND HEATING COMMERCIAL AND OEM MARKETS * REDUCED PRESSURE ZONE ASSEMBLY (RPZ) * HEALTH HAZARD APPLICATIONS * NO SPECIAL TOOLS REQUIRED FOR SERVICING * REDUCED PRESSURE ASSEMBLIES PREVENT THE REVERSE FLOW OF POLLUTED WATER FROM ENTERING INTO THE POTABLE WATER SUPLY DUE TO BACKSIPHONAGE AND OR BACKPRESSURE * IT CONSISTS OF A BRONZE BODY CONSTRUCTION, BRONZE BALL VALVE SHUTOFFS, AND BRONZE TEST COCKS * SERIES 909 FEATURES A PATENTED "AIR-IN/WATER OUT" DESIGN PRICIPLE FOR PROTECTION DURING EMERGENCY COMBINED BACKSIPHONAGE AND BACKPRESSURE CONDITIONS * IT IS IDEAL FOR HEALTH HAZARD CROSS-CONNECTIONS OR FOR CONTAINMENT AT THE SERVICE LINE ENTRANCE * CHECK WITH LOCAL WATER AUTHORITIES FOR INSTALLATION REQUIREMENTS * MAXIMUM WORKING PRESSURE 175 PSI (12.06 BAR) * SERIES 909 REDUCED PRESSURE ASSEMBLIES ARE DESIGNED TO PROVIDE SUPERIOR CROSS-CONNECTION CONTROL PROTECTION OF THE POTABLE WATER SUPPLY IN ACCORDANCE WITH NATIONAL PLUMBING CODES AND CONTAINMENT CONTROL FOR WATER AUTHORITY REQUIREMENTS * THIS SERIES CAN BE UTILIZED IN A VARIETY OF INSTALLATIONS INCLUDING HEALTH HAZARD CROSS-CONNECTIONS IN PLUMBING SYSTEMS OR FOR CONTAINMENT AT THE SERVICE LINE ENTRANCE * WITH ITS EXCLUSIVE, DESIGN INCORPORATING THE PATENTED "AIR-IN/WATER-OUT" PRINCIPLE IT PROVIDES MAXIMUM RELIEF VALVE DISCHARGE DURING THE EMERGENCY CONDITIONS OF COMBINED BACKSIPHONAGE AND BACKPRESSURE WITH BOTH CHECKS FOULED * MODEL 909QT, STANDARD FURNISHED WITH FULL PORT, RESILIENT SEATED AND BRONZE BALL VALVE SHUTOFFS * SIZE 3/4" SHUTOFFS HAVE TEE HANDLES * COMPACT FOR INSTALLATION EASE * HORIZONTAL OR VERTICAL (UP OR DOWN) INSTALLATION * A REDUCED PRESSURE ZONE ASSEMBLY SHALL BE INSTALLED AT EACH CROSS-CONNECTION TO PREVENT BACKSIPHONAGE AND BACKPRESSURE OF HAZARDOUS MATERIALS INTO THE POTABLE WATER SUPPLY * THE ASSEMBLY SHALL CONSIST OF A PRESSURE DIFFERENTIAL RELIEF VALVE LOCATED IN A ZONE BETWEEN TWO POSITIVE SEATING CHECK VALVES * BACKSIPHONAGE PROTECTION SHALL INCLUDE PROVISION TO ADMIT AIR DIRECTLY INTO THE REDUCE PRESSURE ZONE VIA A SEPARATE CHANNEL FROM THE WATER DISCHARGE CHANNEL, OR DIRECTLY INTO THE SUPPLY PIPE VIA A SEPARATE VENT * MEETS REQUIREMENTS OF ASSE STANDARD 1013, AWWA STANDARD C511-92 CSA B64.4, FCCCHR OF USC MANUAL SECTION 10, LISTED BY IAPMO (UPC), SBCC1 (STANDARD PLUMBING CODE) * NOTE: THE INSTALLATION OF A DRAIN LINE IS RECOMMENDED WHEN INSTALLING A DRAIN LINE, AN AIR GAP IS NECESSARY * RELIEF VALVE SEATS: STAINLESS STEEL 909HW * 3/4" (19MM) 909-NPT FEMALE THEADED BODY CONNECTION * TEMPERATURE RANGE :33*F -140*F (5*C-60*C) CONTINUOUS * MAXIMUM WORKING PRESSURE: 175PSI (12.06 BAR) * HOW IT OPERATES: THE UNIQUE RELIEF VALVE CONSTRUCTION INCORPORATES TWO CHANNELS: ONE FOR AIR, ONE FOR WATER. WHEN THE RELIEF VALVE OPENS, AS IN THE ACCOMPANYING AIRIN/WATER-OUT DIAGRAM, THE RIGHT-HAND CHANNEL ADMITS AIR TO THE TOP OF THE REDUCED PRESSURE ZONE, RELIEVING THE ZONE VACUUM. THE CHANNEL ON THELEFT THE DRAINS THE ZONE TO ATMOSPHERE. THEREFORE, IF BOTH CHECK VALVES FOUL, AND SIMULTANEOUS NEGATIVE SUPPLY AND POSITIVE BACKPRESSURE DEVELOP, THE RELIEF VALVE USES THE AIR-IN/WATER-OUT PRINCIPLE TO STOP POTENCIAL BACKFLOW ...THANK YOU AND HAPPY NEW YEAR (Watts 3/4 909QT reduced pressure zone assembly 0387121 is the responsibility of Dorothea Ashley) |
dashley@cedar--rapids.com (Dorothea Ashley) for more information.
