standardization and metrology organization · 2016. 3. 31. · the standard nominal size for spuds...

KINGDOM OF SAUDI ARABIA

SASO 1473/2016

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 2/03/6201: التاريخ الاخير الاصدار

SAUDI STANDARD SASO 1473/2016

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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 SASO 1477, “Sanitary Appliances - Pressurized Flushing Devices”.

2.5 SASO ……, “Ceramic Sanitary Appliances - Western Water Closets with Dual

Flush Devices”. "Note: ASME A112.19.14-2013 can be used, until SASO prepared".

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.


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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.

3.1.6 Dual flush: a feature that allows the user to flush the water closet with either a

reduced or full volume of water depending upon bowl contents.

3.1.7 Electro-hydraulic water closet: a water closet with a non-mechanical trap seal

incorporating an electric motor and controller to facilitate flushing.

3.1.8 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.

3.1.9 Fitting: a device that controls and guides the flow of water.

3.1.10 Fixture: a device that receives water, waste matter, or both and directs these

substances into a drainage.

3.1.11 Flood level: the level at which water will overflow a fixture.

3.1.12 Flush cycle: the complete operating sequence of a water closet in emptying its

contents, cleaning its inside surfaces, and refilling the water seal.

3.1.13 Flushing device: a device for delivering water into a water closet bowl.

3.1.14 Flush valve: a valve for discharging water from a flush tank into a water closet

bowl.

3.1.15 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.

3.1.16 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.

3.1.17 Flushing surface: a surface that is visible after installation and is wetted during

operation of a water closet.

3.1.18 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 close-

coupled with the water closet bowl that is fitted with a fill valve and flush valve.

3.1.19 Gravity flush tank water closet: a water closet designed to flush the bowl with

water supplied by gravity only.

3.1.20 Integral: a cast or formed part of a fixture, e.g., a trap, seat, or flush tank.


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3.1.21 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.

3.1.22 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.

3.1.23 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.

3.1.24 Rim: the unobstructed open edge of a plumbing fixture.

3.1.25 Sanitary: an aesthetic condition of cleanliness (not the state of being

microbiologically clean).

3.1.26 Siphonic action: the movement of water through a flushing fixture by creating

a siphon to remove waste material.

3.1.27 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).

3.1.28 Spud: a fitting used to connect a flushing device to a water closet.

3.1.29 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.

3.1.30 Trap dip: the highest internal surface of the lowest part of a trap.

3.1.31 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.

3.1.32 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).

3.1.33 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.

3.1.34 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.

3.1.35 Vitreous china: ceramic material fired at a high temperature to form a non-

porous body with a maximum water absorption of 0.5% of the original weight

of the dry specimen.

3.1.36 Water surface: the surface of the still water in the well of a water closet when

the trap is filled to the weir.


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3.1.37 Weir: the lowest internal surface of the highest part of a trap.

3.1.38 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.

3.2.2 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 Bolt hole spacing Bolt holes for wall-mounted water closet bowls shall be spaced as shown in

Figure 3.

4.5 Roughing-in details Water closet outlets shall rough-in at 250 ± 55.

Note: See Figure 4

4.6 Seat-mounting holes Water closet seat-mounting holes shall be as shown in Figure 4.


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4.7 Rim profiles Adult water closet bowl rim profiles for round and elongated bowls shall be as

shown in Figure 5.

4.8 Water surface dimensions Water closet bowls shall have a minimum water surface dimension of 100 × 100

mm when measured on a flat and level surface.

4.9 Trap diameter Water closet bowl traps shall have a diameter that allows a solid ball with a

minimum diameter of 38 mm to pass.

4.10 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.

4.11 Top spuds shall be located as shown in Figure 4(a).

4.12 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.

5- 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.


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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.

5.3 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 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.

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.


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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.

5.6 Dual flush water closets

Dual flush water closets shall comply with the Saudi standard mentioned in

Clause 2.5.

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 with stand 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.

7- WATER CLOSET PERFORMANCE TESTS

7.1 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 Clause2.2, the

average of the total flush volumes obtained shall not exceed

(a) 3.0+0.5 Lpf for floor-mounted western water closets pans with single flush S

trap types;

(b) 4.0 +0.5 Lpf for floor-mounted and wall-hung western water closet pans with

single flush P trap types;

(c) 3.0+0.5 Lpf for floor-mounted western water closets pans with dual flush S

trap types, the average of the total flush volumes for dual flush is calculated

as (f+(5×l))/6,where f is the full flush value and l is the low flush value (full

flush value shall not exceed 4.8 liters);and

(d) 4.0+0.5 Lpf for floor-mounted and wall-hung western water closets pans with

dual flush P trap types the average of the total flush volumes for dual flush is

calculated as (f+(5×l))/6,where f is the full flush value and l is the low flush

value (full flush value shall not exceed 4.8 liters).


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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.

8- MARKING, PACKAGING, AND INSTALLATION INSTRUCTIONS

AND OTHER LITERETURE

8.1 General 8.1.1 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 8.6, as applicable.

8.1.2 Markings shall be permanent, legible, and visible after installation.

8.2 Close-coupled water closets The model number shall be marked on both the bowl and the tank of close-

coupled water closets.

8.3 Water consumption Water closets shall be marked to identify their average water consumption,

expressed in liters per flush, as follows:

(a) For single flush 3.0 Lpf or the actual tested water consumption, if lower, for

high-efficiency water closets;


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(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”.

(c) For dual flush 3.0/4.8 Lpf or the actual average tested water consumption, if

lower, for high-efficiency water closets;

The liter value may be stated first, at the manufacturer’s option.

8.4 Water level mark in gravity flush tank water closets 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.

8.5 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.

8.6 Packaging

8.6.1 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.

(c) flange shall be mentioned if it is required

8.6.2 In addition to the requirements in Clause 8.6.1, packaging for water closets shall

be marked with the average water consumption in accordance with Clause 8.3.

8.7 Installation instructions and other literature

8.7.1 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.

8.7.2 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.


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8.7.3 The number of this Saudi standard.

8.7.4 The country of origin.

9- RULES OF ACCEPTANCE AND REJECTION

9.1 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.


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(a) water closets outlet not provided with a flange. (b) water closets outlet provided with a flange

(flange shall be provided for this type).

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)


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(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)


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Figure 3

Bolt hole spacing for wall-mounted water closet bowls (See Clause 4.6.3)


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Figure 4

Roughing-in and seat bolt hole dimensions for water closets (See Clauses 4.5, 4.6, and 4.11)


15

Figure 4 (Concluded)


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Figure 5

Water closet bowl rim profiles (See Clause 4.7)

Figure 6

Gravity flush tank valve openings (See Clause 5.2.2)


17

Main References :

– Standards of the American Society of Mechanical Engineers ASME

A112.19.2-2008/CSA B45.1-08 " Ceramic plumbing fixtures "


18

This draft Saudi standard has updated by the working group including the following

members:

1. Eng. Tawfik I. Aljrayed

Saudi Standards ,Metrology and Quality

Organization

Member &

Coordinator

2. Eng. Yousef O. Alferaiheedi High Commission for the Development

of Arriyadh

Member

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 High Commission for the Development

of Arriyadh

Chairman

2. Eng. Mohammad I. ALEidan Ministry of Water & Electricity Member

3. Eng. Abdullah M Alotabi

Ministry of Municipal & Rural Affairs Member

4. Eng. Faiz M. Alboqmi

Saudi Ceramic Company Member

5. Eng. Ahmed A. Abou Moussa Casavia-sidc Company Member

6. Mr. Waleed M. Danyal Niagara Conservation Company Member

7. Eng. Majed I. Albahooth Arabian Company for Ceramics

(Porsalina)

Member

8. Eng. Tawfik I. Aljrayed

Saudi Standards ,Metrology and Quality

Organization

Consultant

9. Mr. Waleed A. Alrebian Saudi Standards ,Metrology and Quality

Organization

Member

10. Eng. Sultan M. Alsogaier Saudi Standards ,Metrology and Quality

Organization

Committee

Convenor

http://www.google.com.sa/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&ved=0CCcQFjAA&url=http%3A%2F%2Fwww.niagaraconservation.com%2F&ei=ZlcKU8zRHuHG0QXztoHoDQ&usg=AFQjCNGwRFkOzj8UP_6RWX79YDJVByKhaw&sig2=n-N2FKrQy9ku-spCFby0XQ

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