BS/EN 200-2008 pdf download.Sanitary tapware— Single taps and combination taps for water supply systems of type 1 and type 2— General technical specification.
8 Leaktightness characteristics
8.1 General
This clause describes the test methods that shall be carried out to verify the Ieaktightness of the complete tap and
specifies the corresponding requirements (see Table 8).
8.2 Test methods
8.2.1 PrincIple
The principle of the test consists of checking under cold water pressure the leaktightness of:
— the obturator (see 8.3);
— the complete tap (see 8.4);
— the bath/shower diverter (either manual or with automatic return) (see 8.5. 8.6 and 8.7).
In the case of a diverter with automatic return being considered to provide backflow prevention, it shall comply with
the requirements of EN 14506
8.2.2 Apparatus
A hydraulic test circuit, capable of supplying the required pressures and of maintaining them throughout the duration of the tests.
A hydraulic test circuit, capable of supplying gradually the required static and dynamic pressures and of maintaining them throughout the duration of the test.
8.3 Leaktightness of the obturator and of the tap upstream of the obturator(s) with the obturator in the closed position
8.3.1 Procedure
a) Connect the tap to the test circuit;
b) with the outlet orifice open, and generally turned downwards, close the obturator(s) using a torque of (1,5 ± 0.15) Nm for nominal size Y, and (2,5 ± 0,25) Nm for nominal size 34; if a stuffing box is used to ensure leaktightness of the headwork, the packing gland shall be loosened before application of the closing torque;
c) apply to the inlet of the tap a water pressure of (1.6 ± 0.05) MPa ((16,0 ± 0,5) bar] and maintain it for (60 ± 5)s.
Not applicable when the outlet cannot be closed.
8.4.2 Procedure
a) Connect the tap to the test circuit;
b) if a stuffing box is used to ensure leaktightness of the headwork, ensure that the packing gland is tightened in accordance with the manufacturers instructions;
C) with the outlet orifice(s) artificially closed, and generally turned downwards open the obturator(s);
d) apply to the inlet of the tap a water pressure of (0,4 ± 0.02) MPa ((4.0 ± 0,2) bar) and maintain it for (60 ± 5) s;
e) gradually reduce the pressure to (0,02 ± 0.002) MPa [(0.2 ± 0,02) bar] and maintain it for (60 ± 5) s.
8.4.3 Requirement
Throughout the duration of the test there shall be no leakage. or seepage through the walls.
8.5 Leaktightness of manually operated diverter
8.5.1 Procedure: flow to bath
a) Connect the tap, in its normal position of use, to the test circuit;
b) put the diverter in the flow-to-bath mode, the outlet to bath being artificially closed and the outlet to shower open:
C) apply a static water pressure of (0,4 ± 0,02) Mpa [(4.0 ± 0.2) ban and maintain it for (60 ± 5) s:
d) gradually reduce the pressure to (0,02 ± 0,002) Mpa [(0.2 ± 0.02) bar] and maintain it for (60 ± 5) s;
e) check for leakage at the outlet to shower.
8.5.2 RequIrement: flow to bath
There shall be no leakage at the outlet to shower.
8.5.3 Procedure: flow to shower
a) Put the diverter in the flow-to-shower mode, the outlet to shower being artificially closed and the outlet to bath open;
a) Connect the tap, in its normal position of use, to the test circuit:
b) connect the hydraulic resistance corresponding to the flow rate class marking — see EN ISO 3822-4 to the shower outlet (for example: for marking A, class A resistance will be used during testing):
c) put the diverter in the flow-to-bath mode with the outlets to bath and shower open:
d) apply a dynamic pressure of (0,4 ± 0,02) Mpa ((4.0 ± 0,2) ban and maintain it for (60 ± 5) s:
e) check for leakage at the outlet to shower.
8.6.2 Requirement: flow to bath
There shall be no leakage at the outlet to shower.
8.6.3 Procedure: flow to shower
a) Put the diverter in the flow-to-shower mode with the outlets to bath and shower open:
b) apply a dynamic pressure of (0.4 ± 0,02) Mpa [(4,0 ± 0,2) ban and maintain it for (60 ± 5) s;
c) check for leakage at the outlet to bath:
d) gradually reduce the pressure to (0,05 ± 0,002) Mpa [(0,5 ± 0,02) barj and maintain it for (60 ± 5) s:
e) check the diverter position and check for leakage at the outlet to bath:
f) close the tap obturators:
g) check the diverter position.
8.6.4 Requirements: flow to shower
— There shall be no leakage at the outlet to bath whilst the diverter remains in the flow to shower position;
— the diverter shall not return to the flow to bath position at any pressure > (0,05 ± 0,002) Mpa ((0,5 ± 0,02) bar];
— the diverter shall return to the flow to bath position when the obturators are closed.
8.6.5 ContInuation procedure: flow to bath
a) Re-open the tap obturators:BS/EN 200-2008 pdf download.