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GB 26730-2011: Sanitary ware - Gravity water flushing devices and supports Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB 26730-2011: Sanitary ware - Gravity water flushing devices and supports---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB26730-2011GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 91.140.70 Q 31 Sanitary ware - Gravity water flushing devices and supports Issued on. JULY 20, 2011 Implemented on. MAY 01, 2012 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of PRC; Standardization Administration of PRC. Table of ContentsForeword... 3 1 Scope... 4 2 Normative references... 4 3 Terms and definitions... 5 4 Materials... 8 5 Technical requirements... 8 6 Test method... 17 7 Inspection rules... 28 8 Markings and identifications... 31 9 Packaging, transportation, storage... 31 Appendix A (Normative) Connection size between support and wall-mounted toilet... 33 Appendix B (Normative) Test method of torque and tensile strength... 35 Appendix C (Normative) Test of anti-siphon function of fill valve... 37 Appendix D (Normative) Test method of water hammer... 40 Appendix E (Normative) Test method of durability... 42 Appendix F (Normative) Test method of forward thrust of external flush tank 44 Appendix G (Normative) Test method of safety load of sanitary ware's support ... 45 References... 481 ScopeThis standard specifies the terms and definitions, technical requirements, test methods, inspection rules, markings and identifications, packaging, transportation, storage of gravity water flushing devices for toilet AND supports of sanitary ware. This standard is applicable to the flushing devices that are installed on cold water supply pipelines, which has a static pressure of not greater than 0.6 MPa AND functions by the gravity of the water, for various toilets, as well as the supports for wall-mounted sanitary ware.2 Normative referencesThe following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this standard. GB/T 3768 Acoustics - Determination of sound power levels of noise sources using sound pressure - Survey method using an enveloping measurement surface over a reflecting plane 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 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 10125-1997 Corrosion tests in artificial atmospheres - Salt spray tests GB/T 17219 Standard for safety evaluation of equipment and protective mater GB/T 23448 Flexible hose for sanitary tapware3 Terms and definitionsThe terms and definitions as established in GB/T 9195 AND the following terms and definitions apply to this document. 3.1 Flush tank A special flush tank, which is equipped with such accessories as fill valves, flush valves, driving devices, etc., for direct flushing of toilets or other sewage devices. 3.2 Fill valve A device used in the flush tank, to control the water level to a preset position. 3.3 Flush valve A device in the flush tank, that opens or closes the drain hole. 3.4 Affixes of flush tank The components other than the fill valve and the flush valve, which are used to manipulate or assist the flush tank to complete the flushing action, as well as the components for installing or fixing the flush tank or flush tank's accessories. 3.5 Inner flush tank A flush tank that does not have to bear external force, has no appearance requirements, only guarantees the flushing function. It is a flush tank usually set in a ceramic flush tank, OR a flush tank installed in other furniture in a hidden manner.4 Materials4.1 For all materials in the flushing device that are in direct contact with drinking water, they shall meet the requirements of GB/T 17219.Other materials shall meet the requirements of product performance. 4.2 When the toilet uses seawater, reclaimed water, rainwater or other water containing chemical components, the materials and seals used in the gravity flushing device for the toilet shall meet the corresponding requirements for use. The technical requirements and test methods may be agreed between the supplier and the buyer.5 Technical requirements5.1 General technical requirements 5.1.1 Surface quality 5.1.1.1 The outer surface of the metal parts shall not have defects such as shrinkage holes, blisters, cracks or pores; the inner cavity shall not have adhered molding sand. 5.1.1.2 The surface of the plastic part shall not have obvious ripples, weld marks, 5.1.1.4 The appearance quality of ceramic parts shall meet the requirements of GB 6952. 5.1.2 Corrosion resistance of coating on exterior parts After the acid salt spray test, the appearance level of the visible coating surface after installation shall meet the requirements of level 6 in GB/T 6461-2002. 5.1.3 Installation and removal All parts shall be easy to install and disassemble. After installation, all movable parts shall move flexibly without jamming. 5.1.4 Drive mode It shall not use the open-stop (intermittent) drain-close drive mode. 5.1.5 Water volume adjustment function The flushing device shall have the function of adjusting the water volume. For special products that require a fixed water consumption, they can be as required by the contract. 5.2 Technical requirements for fill valve 5.2.1 Thread 5.2.2 Water replenishment ratio 5.2.3 Inlet water flow Under the dynamic pressure of 0.05 MPa, the inlet water flow rate shall not be less than 0.05 L/s. Under the dynamic pressure of 0.5 MPa, the inlet water flow rate shall not be greater than 0.33 L/S. 5.2.4 Tightness 5.2.4.1 Tightness at static pressure After the test of tightness at static pressure, the rising height of the water level in the flush tank shall not be greater than 8 mm. Meanwhile there shall be no visible drips after the fill valve is closed. 5.2.5 Pressure resistance After the test of pressure resistance, the fill valve shall be free from leakage, deformation, sweating, or any other damage. 5.2.6 Resistance to thermal denaturation After the test of resistance to thermal denaturation, the fill valve shall not have leakage, deformation, sweating and any other damage. For the fill valve with the water replenishment pipe, the water replenishment pipe shall not fall off. 5.2.7 Anti-siphon function 5.2.8 Reopen function Carry out the reopen function test. When draining to the specified test height, the fill valve shall be able to automatically open, to fill water; meanwhile, after reaching to the working water level, it shall be able to automatically close. The height difference of the working water level for 5 consecutive water fillings shall not be greater than 5 mm. 5.2.9 Water hammer Carry out the test in accordance with the provisions of 6.14.When the fill valve is closed, there shall be no water hammer that increases the pressure by more than 0.2 MPa. 5.2.10 Water filling noise The noise generated shall, during the water filling process, not exceed 55 dB(A). 5.2.11 Durability of fill valve After the durability test, the fill valve shall be free of leakage or any other failures. 5.3 Technical requirements for flush valve 5.4 Technical requirements for flush tank In addition to the requirements of 5.1, 5.2 (except 5.2.8 and 5.2.11) and 5.3.1, 5.3.2, 5.3.5, the components of the flush tank shall also meet the following requirements. When the matched installation of the flush tank and the toilet requires the use of sanitary ware support, it shall meet the requirements of 5.5. 5.4.1 Safe water level After the installation of each part of the flush tank (excluding the hidden cistern), the relative water level shall meet the requirements of Figure 2. Unit is mm 5.4.2 Assembly requirements After the fill valve and the flush valve are installed in the flush tank, they shall be firm and reliable, free from jamming; each moving part shall work flexibly. After filling water to the working water level, there shall be no leakage everywhere in the flush tank. 5.5 Technical requirements for sanitary ware supports 5.5.1 General requirements 5.5.2 Safety load The maximum displacement of the front end of the standard test bracket of the support shall not be greater than 10 mm. 5.5.3 Flatness Except for the pipes and pipe fittings that are fixedly connected to sanitary ware, AND the fixed feet that are fixed to the wall and the ground, FOR the support, all the parts on the support which include the pipe fixing parts, the processed projections of the parts, there shall be no deformation that exceeds 1 mm of the front plane surface of the support, after installation, in any plane within the range of 600 mm × 600 mm.6 Test method6.1 Test preparation 6.1.1 Standard flush tank The inner cavity's size of the standard flush tank for the test is length × width × height (400 mm × 175 mm × 300 mm). 6.2 Surface quality Under the illumination condition where the diffused light on the product surface is at least 300 lx, at a position about 600 mm from the product, visually inspect the surface quality of metal parts, plastic parts and coatings; Follow the provisions of GB 6952 to test the appearance quality of ceramic parts. 6.3 Corrosion resistance test of coating/plating Follow the provisions GB/T 10125-1997 to carry out the 24 h acid salt spray test. 6.4 Installation and removal For the assembled product, use hand touch to check whether the movable parts move flexibly AND whether there is jamming. 6.5 Drive mode Apply an external force to the product's flush switch to open it AND quickly (within 1 s) remove the external force, to check whether it can drain water according to a fixed volume and automatically close. 6.6 Fill valve's thread 6.7 Determination of water replenishment ratio Install the fill valve in a standard flush tank. At the pressure as specified in 5.2.2.2, measure the total water inflow and water replenishment, within the range of 60 s ± 3 s. Use formula (1) to calculate the water replenishment ratio. The result is expressed as a percentage. 6.8 Determination of filling flow Install the fill valve in a standard flush tank (for the fill valve with a water replenishment pipe, it shall put the water replenishment pipe in the flush tank). Use a graduated cylinder to measure 6 L of water. Pour it into the flush tank. Make an obvious mark of the liquid level. THEN, empty the water in the flush tank. 6.9 Tightness of fill valve 6.10 Pressure resistance test of fill valve Install the fill valve on a pressure test pump OR other pressure device with the same effect. Manually close the fill valve. Pressurize it to 1.6 MPa ± 0.02 MPa. under this pressure, hold for 5 min ± 10 s. Observe whether there are cracks, deformations, water seepage in various parts of the valve body. 6.15 Measurement of water inlet noise 6.16 Durability test The durability of the fill valve, flush valve, flush tank shall be tested in accordance with the provisions of Appendix E. 6.17 Test of strength of flush valve joint The strength of the flush valve joint shall be tested in accordance with the provisions of Appendix B. 6.20 Determination of drain flow 6.20.1 Determination of drain flow of flush valve 6.21 Corrosion resistance test of flush valve seal 6.30 Corrosion resistance test of support For the corrosion resistance of the load-bearing parts which are used to fix the support, AND the metal parts which are used to fix the sanitary but inconvenient to replace and maintain after installation, it is subject to a 200-hour neutral salt spray test according to GB/T 10125-1997; THEN, according to GB/T 6461-2002, report the appearance class; For the corrosion resistance of metal parts, which are used to fix sanitary ware and which can be replaced after decoration on the support, it is subject to a 4- hour neutral salt spray test according to GB/T 10125-1997; THEN, according to GB/T 6461-2002, report the appearance class. 6.31 Fixing strength test of pipe fittings7 Inspection rules7.1 Inspection classification Product inspection is divided into exit-factory inspection and type inspection. 7.2 Exit-factory inspection 7.2.1 Inspection items The exit-factory inspection items shall be carried out in accordance with Table 3. 7.2.2 Group-batching and sampling scheme Perform group-batching of products of the same kind, same type, same model. The samples required for exit-factory inspection are randomly selected from the grouped batches. Sampling scheme is carried out according to Table 4. 7.2.3 Judgment rules If all the inspection items are qualified, the batch of products is determined to be qualified. However, if there is one or more unqualified items, the batch of products is determined to be unqualified. 7.3 Type inspection 7.3.1 Inspection items Type inspection includes all the items in Chapter 5. 7.3.2 Inspection conditions When one of the following conditions occurs, type inspection shall be carried out. 7.3.3 Group-batching rules and sampling scheme 7.3.4 Inspection items, minimum sample size, inspection process 7.3.5 Judgment rules When all items are qualified after inspection, the batch of products is judged to be qualified. However, if one or more items are unqualified, the batch of products is judged to be unqualified.8 Markings and identifications8.1 Permanent marking 8.1.1 The trademark shall be marked in an obvious position of the product. 8.1.2 There shall be a CL line mark on the fill valve. 8.1.3 The rated flushing volume and marking line of the flush tank shall be marked on the inner wall of the flush tank OR on the flush valve. 8.2 Product identification The product or single package shall at least identify the following. product name, specification model, implemented standard, registered trademark, production date or batch number, manufacturer's name, place of origin. 8.3 Certificates and instructions The smallest package of the product shall be accompanied by a exit-factory inspection certificate; provide an installation and use manual.9 Packaging, transportation, storage9.1 Each set of products shall be packaged separately. It shall ensure that there is no collision between the products. 9.2 During transportation, the product shall be protected from squeezing and bumping. 9.3 The product shall be stored in a well-ventilated place. It shall not be co- stored with acids, alkalis or corrosive materials. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB 26730-2011 be delivered?Answer: The full copy PDF of English version of GB 26730-2011 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB 26730-2011_English with my colleagues?Answer: Yes. 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