ASME A112.19.10:2017 pdf free download RETROFIT DUAL FLUSH DEVICES FOR WATER CLOSETS
1 GENERAL1.1 Scope
This Standard establishes physical, material,testing, and marking requirements for retrofit dual flush devices that areinstalled within gravity-type water closet tanks and have a full flush volume of 4.8 Lpf(1.28 gpf) or greater volume.
1.2 Units of Measurement
The values stated in either Sl (metric) or U.S.Customary (inch/pound) units of measure are to be regarded as thestandard. In this Standard, the inch/pound units are shown in parentheses. The values stated in each measurementsystem are equivalent in application; however, each system is to be used independently.Combining values from the twomeasurement systems can result in nonconformance with this Standard.All references to gallons are to U.S.gallons.
1.3 References
The following document forms a part of this Standard to the extent specified herein.Unless otherwise specified, thelatest edition shall apply.
ASMEA112.19.5/CSA B45.15, Flush Valves and Spuds for Water Closets,Urinals, and Tanks
Publisher: The American Society of Mechanical Engineers (ASME),Two Park Avenue, New York,NY 10016-5990(www.asme.org)
1.4 Definitions
cycle time: the time beginning at the instant the flush release device is operated, and ending atthe instant the water supplyvalve is completely shut off and the water stops flowing.
dual flush device: a mechanism for control of water closet discharge that provides the user with two options for selectiveoperation with either a normal fill volume or a reduced volume of water from the tank.
flapper valve: see flush valve.
flowing pressure: the pressure in a water supply pipe at the inlet to an open valve.
flush tank (gravity type): a vessel that stores a predetermined quantity of water and includes a flushing device to dischargewater (plus some through-flow from the water supply line) into a water closet bowl or urinal.
NOTE: A common type of flush tank is a wall-hung vessel or a vessel close-coupled with the water closet bowl that i fitted with filvalve and flush valve.
flush valve: a valve located in a flush tank and used to flush a fixture by discharging water into the fixture.sanitary: reasonably acceptable appearance and not necessarily microbiologically clean.
water closet: a plumbing fixture having a water-containing receptor that receives liquid and solid body waste and,uponactuation, conveys the waste through an exposed integral trap seal into a gravity drainage system.
water savings: the amount of flush volume water reduction in gallons or percentage when comparing consumption withand without a dual flush device for a water closet.
water surface: the surface of the still water in the water closet bowl when filled to the trap weir.
2 GENERAL REQUIREMENTS2.1 Functional Operation
The flush valve with dual flush feature shall be designed for retrofit use in water closets and shall fit within the tankpunching without interference with other operating parts. The user shall be required to activate a full or reduced flush byactuation of the selector control. After release, the selected flush mode shall be completed without requiring furtheraction or holding by the user.
2.2 Flush Valve
The flush valve shall meet the following requirements of ASMEA112.19.5/CSA B45.15:(a) rated temperature
(b) threads
(c) overflow tube(d) thread torque test
(e) fixture and flush valve leak testf leak rate and chemical resistance test3 TESTING
3.1 Life Cycle Testing
The flush valve with dual flush device shall be evaluated for durability.The life cycle test shall be conducted as follows:(a) Install the specimen with a minimum sustained water head of 150 mm (6.0 in.) at 21°C ± 5°C(70°F ±10°F).(b) Operate the specimen and allow it to return to its closed position for 30,000 cycles using a sequence of reduced tofull flushes in a ratio of 1:4.After completing 30,000 cycles at a ratio of 1:4, immediately begin 120,000 cycles in thereduced flush volume mode.
3.2 Performance Requirements
During and after the test, dual flush devices shall
(a) continue to function as they did at the beginning of the test(b) show no signs of leakage
(c) not develop any defects that might adversely affect their functionality or serviceability4 MARKINGS AND INSTALLATION INSTRUCTIONS
4.1 Markings
Retrofit dual flush devices shall be marked with the manufacturer’s name and/or registered trademark or, in case ofprivate labeling, the name for whom the device was manufactured.
Markings shall be permanent, legible, and visible after installation.
4.1.1 Repair Parts. Devices shall have a label indicating at least the following:
(a) the telephone number of a service department from which end-users can obtain replacement partsb) the serial or part number
(c) information on procuring replacement parts for maintaining the flush volume
lnctolleties
ASME A112.19.10:2017 pdf free download
