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KINGDOM OF SAUDI ARABIA SASO 1473/2014 CERAMIC SANITARY APPLIANCES WESTERN WATER CLOSETS PREPARED BY Saudi Standards, Metrology and Quality Organization THIS DOCUMENT IS DRAFT SAUDI STANDARD CIRCULATED FOR COMMENTS. IT IS, THEREFORE SUBJECT TO CHANGE AND MAY NOT BE REFERRED TO AS A SAUDI STANDARD UNTIL APPROVED BY THE BOARD OF DIRECTORS. ICS: 91.140.70 م 3302/32/32 : االصداراالخير التاريخ
SAUDI STANDARD SASO 1473/2014 CERAMIC SANITARY APPLIANCES WESTERN WATER CLOSETS 1- SCOPE AND FIELD OF APPLICATION This standard specifies requirements for materials, quality, performance, functional and connecting dimensions for vitreous china western water closet pans of wall-hung and floor-mounted types. Note : Wherever the term of "water closet" is mentioned that mean "western water closets". 2- COMPLEMENTARY REFERENCES The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, that latest edition of the referenced document (including any amendments) applies. 2.1 SASO 1025, “Ceramic Sanitary Appliances - General Requirements”. 2.2 SASO 1474, “Ceramic Sanitary Appliances - Methods of Test for Western Water Closets”. 2.3 SASO 1257, “Sanitary Appliances - Flushing Water Tanks”. 2.4 GS 1477, “Sanitary Appliances - Pressurized Flushing Devices”. 3- DEFINITIONS AND ABBREVIATIONS 3.1 DEFINITIONS The following definitions shall apply in this Standard: 3.1.1 Air gap: the unobstructed vertical distance, through the open atmosphere, between the lowest opening of a water supply and the flood level of the fixture. 3.1.2 Anti-siphon fill valve: a valve that is used to supply water to a flush tank and has, on its discharge side, an air gap, integral mechanical backflow preventer, or vacuum breaker. It is operated by a float or similar device. 3.1.3 Blowout action: a means of flushing a water closet whereby a jet of water directed at the bowl outlet opening pushes the bowl contents into the upleg, over the weir, and into the gravity drainage system. 3.1.4 Blowout bowl: a non-siphonic water closet bowl with an integral flushing rim, a trap at the rear of the bowl, and a visible or concealed jet that operates with a blowout action. 3.1.5 Critical level (CL): the highest water level of a supply fitting at which back siphonage will not occur. 1
SAUDI STANDARD SASO 1473/2014 3.1.6 Electro-hydraulic water closet: a water closet with a non-mechanical trap seal incorporating an electric motor and controller to facilitate flushing. 3.1.7 Fill time: the time from the instant the flush valve of a flush tank closes until the instant the fill valve is completely shut off. 3.1.8 Fitting: a device that controls and guides the flow of water. 3.1.9 Fixture: a device that receives water, waste matter, or both and directs these substances into a drainage. 3.1.10 Flood level: the level at which water will overflow a fixture. 3.1.11 Flush cycle: the complete operating sequence of a water closet in emptying its contents, cleaning its inside surfaces, and refilling the water seal. 3.1.12 Flushing device: a device for delivering water into a water closet bowl. 3.1.13 Flush valve: a valve for discharging water from a flush tank into a water closet bowl. 3.1.14 Flushometer tank: a flushing device that effectively enlarges the water supply pipe immediately before the water closet bowl by being integrated within an accumulator vessel affixed and adjacent to the fixture inlet. 3.1.15 Flushometer valve: a flushing device attached to a pressurized water supply pipe that, when actuated, opens the pipe for direct flow into the fixture at a rate and in a quantity that enables proper operation of the fixture. The valve then gradually closes to provide trap reseal in the fixture and avoid water hammer. Note: The pipe to which the flushometer valve is connected should be large enough to enable delivery of water at a sufficient rate for proper operation. 3.1.16 Flushing surface: a surface that is visible after installation and is wetted during operation of a water closet. 3.1.17 Gravity water closet: a vessel that stores a predetermined quantity of water and includes a flushing device to discharge water (plus some through-flow from the water supply line) into a water closet bowl. Note: A common type of gravity water closet is a wall-hung vessel or a vessel closecoupled with the water closet bowl that is fitted with a fill valve and flush valve. 3.1.18 Gravity flush tank water closet: a water closet designed to flush the bowl with water supplied by gravity only. 3.1.19 Integral: a cast or formed part of a fixture, e.g., a trap, seat, or flush tank. 3.1.20 Low-profile tank: a tank on a water closet that employs a flushing device that is below the flood level of the water closet bowl. 3.1.21 Pressurized flushing device: a flushing device that is employed in non-gravity flushing systems and uses the water supply to create a pressurized discharge to flush fixtures. Note:Flushometer tanks, flushometer valves, and electronically controlled pressurized devices are examples of pressurized flushing devices. 2
SAUDI STANDARD SASO 1473/2014 3.1.22 Pressure: Flowing pressure - the pressure in a water supply pipe at the inlet to an open valve. Static pressure - the pressure in a water supply pipe at the inlet of a closed valve. 3.1.23 Rim: the unobstructed open edge of a plumbing fixture. 3.1.24 Sanitary: an aesthetic condition of cleanliness (not the state of being microbiologically clean). 3.1.25 Siphonic action: the movement of water through a flushing fixture by creating a siphon to remove waste material. 3.1.26 Siphonic bowl: a water closet bowl that has an integral flushing rim, a trap at the front or rear, and a floor or wall outlet, and operates with a siphonic action (with or without a jet). 3.1.27 Spud: a fitting used to connect a flushing device to a water closet. 3.1.28 Trap: a fitting, device, or integral portion of a fixture that provides a liquid seal that prevents the back passage of sewer gas without affecting the flow of wastewater. 3.1.29 Trap dip: the highest internal surface of the lowest part of a trap. 3.1.30 Trap seal depth: the vertical distance between (a) the weir and the trap dip; or (b) if applicable, between the weir and the trap dip or the top edge of a jet opening, whichever is higher. 3.1.31 Trim: parts made of materials other than china that are normally supplied with a fixture, e.g., spuds, wall hangers, and flush valves (but not including fittings). 3.1.32 Washdown (washout) bowl: a water closet bowl that has an integral flushing rim and a floor or wall outlet and primarily operates with a non-siphonic action. 3.1.33 Water closet: a fixture with a water-containing receptor that receives liquid and solid body waste and on actuation conveys the waste through an exposed integral trap into a drainage system. 3.1.34 Vitreous china: ceramic material fired at a high temperature to form a nonporous body with a maximum water absorption of 0.5% of the original weight of the dry specimen. 3.1.35 Water surface: the surface of the still water in the well of a water closet when the trap is filled to the weir. 3.1.36 Weir: the lowest internal surface of the highest part of a trap. 3.1.37 Well: a pocket that is open at the top and formed inside a water closet bowl at the entrance to the trap. 3.2 Abbreviations The following abbreviations apply in this Standard: 3.2.1 CL : critical level. 3
SAUDI STANDARD SASO 1473/2014 3.2.2 Lpf : litres per flush. 3.2.3 DN : Nominal diameter of a pipe. 4- REQUIREMENTS Western water closets shall meet the following requirements: 4.1 Dimensions and tolerances 4.1.1 Thickness The ceramic material in plumbing fixtures shall be at least 6 mm thick throughout (exclusive of glaze). 4.1.2 Tolerances Unless otherwise specified in this Standard, the tolerance on dimensions of 200 mm and greater shall be 3%. The tolerance on dimensions less than 200 mm shall be 5%. In this Standard, dimensions specified as “minimum” or “maximum” shall not be reduced below the specified minimum or increased above the specified maximum by application of a tolerance. If a dimensional range is specified and the word “minimum” or “maximum” does not appear, the upper and lower limits shall not be considered critical and the appropriate tolerance shall apply. 4.2 Material and quality Water closet pans manufactured from vitreous china comply with the Saudi standard mentioned in Clause 2.1. 4.3 Outlet dimensions Outlets shall have the dimensions shown in: (a) Figure 1 (for floor-mounted bottom-outlet water closets); or (b) Figure 2 (for rear-outlet and rear-spigot-outlet water closets). 4.4 Non-standard outlets Outlets that require connections other than a closet flange and ring shall (a) not leak when tested in accordance with the Saudi standard mentioned in Clause 2.2; and (b) shall allow for field repair or replacement. 4.5 Bolt hole spacing Bolt holes for wall-mounted water closet bowls shall be spaced as shown in Figure 3. 4.6 Roughing-in details Water closet outlets shall rough-in at 250 50 mm, or as specified in the manufacturer’s installation instructions. Note: See Figure 4. 4.7 Seat-mounting holes Except when proprietary (i.e., non-standard) seats are supplied by the manufacturer, water closet seat-mounting holes shall be as shown in Figure 4. 4
SAUDI STANDARD SASO 1473/2014 4.8 Rim profiles Except when proprietary (i.e., non-standard) seats are supplied by the manufacturer, adult water closet bowl rim profiles for round and elongated bowls shall be as shown in Figure 5. 4.9 Water surface dimensions Water closet bowls shall have a minimum water surface dimension of 125 100 mm when measured on a flat and level surface. 4.10 Trap diameter Water closet bowl traps shall have a diameter that allows a solid ball with a minimum diameter of 38 mm to pass. 4.11 Spuds The standard nominal size for spuds on water closet bowls shall be as follows: (a) 32 mm or 40 mm for water closet bowls operated by flushometer valves; and (b) 32 mm, 40 mm, or 50 mm for water closet bowls operated by wall-mounted flush tanks. Top spuds shall be located as shown in Figure 4(a). 4.12 4.13 5- Rim heights Water closet bowls shall have the following rim heights: (a) adult water closets shall have a minimum rim height of 340 mm; (b) handicapped/elderly water closets shall have a rim height between 340 and 485 mm; and (c) children’s water closets shall have a rim height between 240 and 270 mm. FLUSHING DEVICES USED WITH FIXTURES 5.1 General 5.1.1 Flushing devices shall deliver water at a sufficient rate and quantity to permit water closets to comply with the hydraulic performance requirements of this Standard. Gravity flush tanks, pressurized flushing devices, and other flushing methods may be used. 5.1.2 Air gaps, vacuum breakers, or other backflow preventers shall be installed above the overflow or flood level of the fixture. Alternatively, spill openings to the outside of the flush tank shall be provided as required by Clause 5.2.4 or 5.3.2. 5.2 Gravity flush tanks 5.2.1 General Gravity flush tanks for water closets shall include an anti-siphon fill valve complying with the Saudi standard mentioned in Clause 2.3and a flush valve complying with the Saudi standard mentioned in Clause 2.4. Gravity flush tanks shall have provisions for overflow. 5.2.2 Fill valve opening diameter and location The fill valve opening shall have the diameter shown in Figure 6, but may be located on either side of the flush tank. 5
SAUDI STANDARD SASO 1473/2014 5.2.3 Critical level The critical level (CL) mark on the fill valve shall be at least 25 mm above the flush tank overflow. 5.2.4 Low-profile gravity tanks When the critical level of the fill valve in low-profile gravity tank water closets is below the flood level of the bowl rim, an auxiliary spill opening(s) shall be provided to ensure that the water in the tank will drain to the floor if the overflow is clogged or the trap is blocked. The size and position of these openings shall be such that with the fill valve at the full open position and the water pressure at maximum, no water shall rise to the critical level of the fill valve. 5.2.5 Water closet fill valve The water closet fill valve shall be the pilot valve type only or, alternatively, the fill valve shall meet the performance requirements of the fill valve test protocol in Clauses 7.10 and 7.11. 5.2.6 Water closet tank capacity Any barrier, bucket, dam, displacement device, or similar fixture used in a water closet tank to affect flush volume shall be tamper-resistant and permanently affixed to the tank. Any device that can be tampered with or removed such that the water closet can be made to flush with greater than the maximum flush volumes specified in Clauses 7.12 and 7.13 shall be deemed noncompliant. 5.3 Pressurized flushing devices 5.3.1 General Pressurized flushing devices shall comply with comply with the Saudi standard mentioned in 2.4. The critical level of the lowest anti-siphon device in a flushometer-valve-activated water closet shall be at least 25 mm above the flood level of the water closet bowl rim. 5.3.2 Low-profile tanks with pressurized flushing devices When the critical level of the pressurized flushing device in low-profile tank water closets is below the flood level of the bowl rim, an auxiliary spill opening(s) shall be provided to ensure that the water in the tank will drain to the floor if the overflow is clogged or the trap is blocked. The size and position of these openings shall be such that with the pressurized flushing device at the full open position and the water pressure at maximum, no water shall rise to the critical level of the pressurized flushing device. 5.4 Plastic water closet tanks Plastic water closet tanks intended for use with vitreous china bowls shall comply with comply with the Saudi standard mentioned in Clause 2.3. 5.5 Electrical components of electro-hydraulic water closets 5.5.1 Pump motor and impeller The pump motor and impeller coupling of electro-hydraulic water closets shall be non-mechanical and seamless. When located below the flood level of the water closet bowl, the pump motor and its electronics shall be installed in a completely sealed chamber without the use of seals, gaskets, or O-rings. 6
SAUDI STANDARD SASO 1473/2014 5.5.2 Jet hose When provided, a pump’s jet hose shall be able to withstand a pressure of 172 7 kPa for 60 min. 5.5.3 Electrical supply cords Electrical supply cords shall (a) be between 0.9 and 1.8 m long; (b) be permanently attached; and (c) have an attachment plug for connection to the branch-circuit supply. The opening where the electrical supply cord exits the water closet shall be smooth and rounded. Alternatively, the opening may have a grommet. 5.5.4 Wiring harnesses and electrical controls Wiring harnesses and electrical controls that are not enclosed in the pump housing shall be located above the flood level of the water closet tank. 6- WATER CLOSET STRUCTURAL INTEGRITY AND SEALS TESTS 6.1 Structural integrity tests for wall-mounted water closets When tested in accordance with the Saudi standard mentioned in Clause 2.2, water closets and their supporting devices shall withstand the test load for 10 min without failure or visible structural damage. 6.2 Joint seal test Joints shall be made in accordance with the manufacturer’s instructions and when subjected to a hydrostatic pressure of 34.5 3.4 kPa for 15 min. There shall be no evidence of leakage. 6.3 Condensation-free (insulated) tank When tested in accordance with the Saudi standard mentioned in Clause 2.2, a tank shall be considered condensation free if, after 3 h, no condensation on the tank exterior is observed before the tank is removed from the chamber. 77.1 WATER CLOSET PERFORMANCE TESTS Trap seal depth determination test When tested in accordance with the Saudi standard mentioned in Clause 2.2, the full trap seal depth, Hf , shall be at least 50 mm. 7.2 Trap seal restoration test When tested in accordance with the Saudi standard mentioned in Clause 2.2, a residual trap seal depth, Hr , of at least 50 mm shall be restored after all ten flushes. 7.3 Water consumption When tested in accordance with the Saudi standard mentioned in Clause 2.2, the average of the total flush volumes obtained shall not exceed (a) 3.0 Lpf for floor-mounted western water closets pans types; and (b) 4.0 Lpf for wall-hung western water closets pans types. 7
SAUDI STANDARD SASO 1473/2014 7.4 Granule and ball test When tested in accordance with the Saudi standard mentioned in Clause 2.2, not more than 125 granules (5% of the original number) and not more than five balls (5% of the original number) shall be visible in the bowl after each flush. 7.5 Surface wash test When tested in accordance with the Saudi standard mentioned in Clause 2.2, the total length of the ink line segments remaining on the flushing surface after each flush shall not exceed 50 mm when averaged over three test runs. No individual segment shall be longer than 13 mm. 7.6 Mixed media test When tested in accordance with the Saudi standard mentioned in Clause 2.2, twenty-two mixed media (sponges and paper balls), averaged, and shall be flushed out of the water closet on the initial flush. The remaining media, if any, shall be flushed out on the second flush. 7.7 Drain line transport characterization test When tested in accordance with the Saudi standard mentioned in Clause 2.2, the average carry distance (total carry of all balls divided by 300) shall be at least 12.2 m. 7.8 Overflow test for gravity flush tanks When tested in accordance with the Saudi standard mentioned in Clause 2.2, leakage or water escaping from the flush tank shall constitute failure. 7.9 Waste extraction test When tested in accordance with the Saudi standard mentioned in Clause 2.2, water closet model performance shall be identified as either a “pass” or “fail”, depending upon whether it can successfully and completely clear all test media from the fixture in a single flush in at least four of five attempts. Tests where the toilet sample clogs, plugs, or fails to restore a minimum of a 50 mm trap seal following each flushing test shall be deemed a failed test. The flush performance criteria shall apply to single flush toilets. 7.10 Consistent water level test When tested in accordance with the Saudi standard mentioned in Clause 2.2, the fill valve shall shut off at the same water level 12 mm for all three inlet water pressures. In addition, water shall not enter the overflow tube or flow out of the tank at any of the three tested inlet pressures. 7.11 Fill valve shutoff integrity test with increased water pressure When tested in accordance with the Saudi standard mentioned in Clause 2.2, the water level shall remain at the initial mark of 12 mm. In addition, water shall not enter the overflow tube or flow out of the tank. 7.12 Adjustability test for tank-type gravity water closets with original equipment When tested in accordance with the Saudi standard mentioned in Clause 2.2, the average total flush volume for five test runs for each of the two static water supply pressures shall not exceed 3 L per flush for floor-mounted water closets, 4 L per flush for wall-hung water closets. The volume of water may be determined visually using a graduated container or by weight calculated as a unit to volume unit. 8
SAUDI STANDARD 7.13 SASO 1473/2014 Adjustability test for tank-type gravity water closets with aftermarket closure seals When tested in accordance with the Saudi standard mentioned in Clause 2.2, the average total flush volume for five test runs for each of the two static water supply pressures shall not exceed 3 L per flush for floor-mounted water closets, 4 L per flush for wall-hung water closets. The volume of water may be determined visually using a graduated container or by weight calculated as a unit to volume unit. 8- MARKING, PACKAGING, AND INSTALLATION INSTRUCTIONS AND OTHER LITERETURE 8.1 8.1.1 General Plumbing fixtures complying with this Standard shall be marked with the manufacturer’s name or registered trademark or, in the case of private labelling, the name of the customer for whom the fixture was manufactured. Additional markings shall be in accordance with Clauses 8.2 to 8.7, as applicable. 8.1.2 Markings shall be permanent, legible, and visible after installation. 8.2 8.2.1 Non-standard fixtures Fixtures that require proprietary (i.e., non-standard) components, e.g., supply fittings, waste fittings, or water closet seats, shall indicate, in the packaging or the accompanying literature, that such components are provided by the manufacturer and shall identify the proper replacement parts. 8.2.2 Fixtures that do not comply with one or more of the dimensional requirements of this Standard shall be marked with an “N” to indicate the non-standard nature of the fixture. Note: This Clause is not intended to apply to fixtures that comply with none of the dimensional requirements of this Standard. 8.3 Close-coupled water closets The model number shall be marked on both the bowl and the tank of closecoupled water closets. 8.4 Water consumption Water closets shall be marked to identify their average water consumption, expressed in liters per flush, as follows: (a) 3.0 Lpf or the actual tested water consumption, if lower, for high-efficiency water closets; (b) Flushometer bowls and bowls for close-coupled toilets shall be marked accordingly as indicated in Items (a). When also tested to be used with tanks or valves with lower consumption levels, the option of including the words “or less”. The liter value may be stated first, at the manufacturer’s option. 8.5 Water level mark in gravity flush tank water closets 9
SAUDI STANDARD SASO 1473/2014 Gravity flush tanks shall be marked with a water level mark or with the information necessary to determine the water level in the tank needed to deliver the intended flush volume. This mark shall be applied to the ceramic body of the tank, the tank liner, or the flush valve overflow tube. The vertical distance between the water level mark and the lowest point of the tank overflow channel shall not exceed 38 mm. 8.6 Water closet tank repair parts Water closet tanks shall have a label indicating at least the following: (a) the telephone number of a service department from which end-users can obtain replacement parts; (b) the serial or part number of the flush valve seal; and (c) information on procuring replacement parts for maintaining the original flush volume. 8.7 Packaging 8.7.1 General Packaging shall be marked with the (a) manufacturer’s name or registered trademark or, in the case of private labelling, the name of the customer for whom the fixture was manufactured; and (b) model number. 8.7.2 In addition to the requirements in Clause 8.7.1, packaging for water closets shall be marked with the average water consumption in accordance with Clause 8.4. 8.8 8.8.1 Installation instructions and other literature General The manufacturer shall provide installation instructions with water closets (except for flushometer valve water closets). For close-coupled water closets, installation instructions shall be provided with the bowl or tank. 8.8.2 If the manufacturer’s recommended minimum pressure is greater than the applicable value specified in Table 5 in the Saudi standard mentioned in Clause 2.2, the packaging and installation instructions and other literature shall specify the recommended minimum pressure. 8.8.3 The number of this Saudi standard. 8.8.4 The country of origin. 10
SAUDI STANDARD SASO 1473/2014 99.1 RULES OF ACCEPTANCE AND REJECTION Each imported consignment shall be accompanied with a certificate indicating its conformity to all the requirements of this standard, but for local consignments, a certificate should be issued by the manufacturer at the request of the purchaser. 9.2 The group shall be considered complying with this standard if its representative samples pass all tests. 9.3 If the representative sample does not pass any of the tests, two new samples shall be taken from the same group, and all the tests shall be carried out on each sample. The group shall be considered complying with this standard if each of the two new samples passes all the repeated tests, otherwise the group shall not be considered complying with this standard. 11
SAUDI STANDARD SASO 1473/2014 (a) water closets outlet not provided with a (b) water closets outlet provided with a flange. flange. Note: This Figure is not intended to restrict the design of the water closet bowl base, provided that dimensions critical to interchangeability are maintained. Figure 1 Outlet dimensions for floor-mounted bottom-outlet water closets (See Clause 4.3) 12
SAUDI STANDARD SASO 1473/2014 (c) Wall-mounted rear-outlet non-washdown water closet bow Figure 2 Outlet dimensions for rear-outlet and rear-spigot-outlet water closet bowls (See Clause 4.3) 13
SAUDI STANDARD SASO 1473/2014 Figure 3 Bolt hole spacing for wall-mounted water closet bowls (See Clause 4.6.3) 14
SAUDI STANDARD SASO 1473/2014 Figure 4 Roughing-in and seat bolt hole dimensions for water closets (See Clauses 4.6, 4.7, and 4.12) 15
SAUDI STANDARD SASO 1473/2014 Figure 4 (Concluded) 16
SAUDI STANDARD SASO 1473/2014 Figure 5 Water closet bowl rim profiles (See Clause 4.8) Figure 6 Gravity flush tank valve openings (See Clause 5.2.2) 17
SAUDI STANDARD SASO 1473/2014 Main References : - Standards of the American Society of Mechanical Engineers ASME A112.19.2-2013/CSA B45.1-13 " Ceramic plumbing fixtures " 18
SAUDI STANDARD SASO 1473/2014 This draft Saudi standard has updated by the working group including the following members: 1. Eng. Tawfik I. Aljrayed 2. Eng. Yousef O. Alferaiheedi Saudi Standards ,Metrology and Quality Member & Organization Coordinator High Commission for the Development Member of Arriyadh The draft has been studied and the comments of the concerned bodies was discussed and the final draft has been agreed by the technical committee No. (2) on “Sanitary Appliances” including the following members: 1. Eng. Yousef O. Alferaiheedi 2. Eng. Mohammad I. leidan High Commission for the Development Chairman of Arriyadh Ministry of Water & Electricity Member 3. Eng. Abdullah M Alotabi 4. Eng. Faiz M. Alboqmi Ministry of Municipal & Rural Affairs Saudi Ceramic Company Member Member 5. Eng. Ahmad A. abo mosa Casavia-sidc Company Member 6. Mr. Waleed M. Danyal Niagara Conservation Company Member 7. Eng. Majed I. Albahooth Arabian Company for Ceramics Member (Porsalina) Saudi Standards ,Metrology and Quality Consultant Organization Saudi Standards ,Metrology and Quality Member Organization Saudi Standards ,Metrology and Quality Committee Organization Convenor 8. Eng. Tawfik I. Aljrayed 9. Mr. Waleed A. Alrebian 10. Eng. Sultan M. Alsogaier 19
water supply line) into a water closet bowl. Note: A common type of gravity water closet is a wall-hung vessel or a vessel close coupled with the water closet bowl that is fitted with a fill valve and flush valve. 3.1.18 Gravity flush tank water closet: a water closet designed to flush the bowl with water supplied by gravity only.
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