1 Scope
This standard specifies the terms and definitions, product classification, materials, parts and accessories, technical requirements, test methods, inspection rules, and marking, packaging, transportation and storage of pressure assistant water flushing devices.
This standard is applicable to pressure assistant water flushing devices installed on water supply pipelines with static pressure not greater than 0.6 MPa and matched with various WC pans and urinals.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 2423.1 Environmental testing for electric and electronic products - Part 2: Test methods - Tests A: Cold
GB/T 2423.2 Environmental testing for electric and electronic products - Part 2: Test methods - Tests B: Dry heat
GB/T 2423.3 Environmental testing for electric and electronic products - Part 2: Testing method - Test Cab: Damp heat, steady state
GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
GB/T 2829 Sampling procedures and tables for periodic inspection by attributes (apply to inspection of process stability)
GB/T 6461-2002 Methods for corrosion testing of metallic and other inorganic coatings on metallic substrates - Rating of test specimens and manufactured articles subjected to corrosion tests
GB 6952 Sanitary wares
GB/T 7306.1 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads - Part 1: Parallel internal and taper external threads
GB/T 7306.2 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads - Part 2: Taper internal and external threads
GB/T 7307 Pipe threads with 55 degree thread angle where pressure-tight joints are not made on the threads
GB/T 9195 Classification and terms of building and sanitary ceramics
GB/T 9286-1998 Paints and varnishes - Cross cut test for films
GB/T 10125-1997 Corrosion tests in artificial atmospheres - Salt spray tests
GB 14536.1 Automatic electrical controls for household and similar use - Part 1: General requirements
GB/T 17219 Standard for safety evaluation of equipment and protective materials in drinking water system
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB/T 9195 and the following apply.
3.1
pressure assistant flush tank
pressure assistant water flushing device, which uses a pressure bag to quickly discharge the water in the system to flush the WC pans
3.2
flushometer valve
pressure assistant water flushing device, which can start drainage by external force or mechanical action to flush WC pans by water supply pipeline pressure and can automatically close
3.3
non-contact pressure flushing valve
pressure flushing valve, for which water can be supplied by taking infrared ray, pyroelectric transducer, microwave, ultrasonic and other media as sensors rather than direct contact or operation by human hands or other parts
Foreword i
1 Scope
2 Normative references
3 Terms and Definitions
4 Product classification
4.1 Pressure assistant water flushing devices
4.2 Pressure assistant flush tanks
4.3 Pressure flushing valves
5 Materials, parts and accessories
6 Technical requirements
6.1 Pressure assistant flush tank
6.2 Flushometer valve
6.3 Non-contact pressure flushing valve
7 Test methods
7.1 Test method of pressure assistant flush tank
7.2 Test method of flushometer valve
7.3 Test method of non-contact pressure flushing valve
8 Inspection rules
8.1 Inspection classification
8.2 End-of-manufacturing inspection
8.3 Type inspection
8.4 Sampling method
9 Marking and identification
10 Packaging, transportation and storage of products
Annex A (Normative) Torque and tensile strength test of threads
Annex B (Normative) Water hammer test
