EN 816-1996 pdf download.Sanitary tapware Automatic shut-off valves PN 10.
8.8 Special cases
8.8.1 Special taps and mixers for installation on horizontal surfaces
Taps and mixers intended for special applications e.g. for installation on sanitary appliances not conforming with European Standards, where dimensi )nal intercliangeal )1l it y is not a requirement etc. etc., can incorporate dimensional deviations, proided:
— all other requirements of thi.s Stan(lard are
satisfied;
– secure fixing to the mounting surface is provided
with all fixing holes covered and watertight
connections to the supplies achieved;
— water can be delivered without undue splashing;
-the air gap dimension E25rnm. ifE is less than 25 rirni, an ad(htional backilow prevention device is necessary in accordance with prEN 1717;
— the manufacturer’s literature, including the installation instnietions supj)lied with the tapware, shall indicate clearly that this tapware is a special case.
8.8.2 Special taps and mixers for installation on vertical surfaces
Taps an(l mixers with a visible body intended for special applications when interchangeability is not a requirement can incorporate dinwnsional kwiations, provided:
— all other requirements of this Standard are satisfied;
— secure fixing and watertight COlUWCtk)ll.S to the water supply are achieved. If connection to the pipes is by means of a thread, this shall comply with
ISO 228-1;
— the manufacturer’s literature, including the installation instructions supplied with the tapware, shall uidicate clearly that this tapware is a special case.
9 Leaktightness characteristics
9.1 General
The k’sts (lescflbed are type tests (laIx)ratory tests) and not quality control tests carried out during manufacture.
1’his clause specifies test methods for verifying the leaktightness of the tapware and gives the corresponding requirements.
9.2 Leaktightness tests
9.2.1 Test methoLc
9.2.1.1 Th7,?clple
11 pnnciple of the test is to check, uIl(ler cold water pressure or under air pressure:
a) the leaktighthess of the obturator
b) the leaktightness of the tapware (body, head-body assembly, spout-body assenhl)ly, etc.).
The test under cold water vressure and the test tinder air pressure are regarded as equivalent. The choice between one or other of the metho(ls is at the discretion of the test laboratory (except for the test at (0,1 ± 0,01) MPa (1 ± 0,1) bar in 9.2.2.1).
NOTE. The control and shut—off devices shall be designed in such a way ibat there is no likelihood of inadvertent opening occurring
UI1( icr normal service COtHiitiOIlS.
9.2.1.2 APParntus
9.2.1.2.1 Water test
A hydraulic test circuit capable of supplying the static and dynamic pressures required and of maintaining tiient throughout the (lurM iou of the test.
9.2.1.2.2 Air test under water
— A tank complete with acces.sones for conducting
the test, filled with water.
— A pneumatic circuit capable of supplying the
require(l pressure and of maintaining it throughout
the duration of the test.
9.2.2 Test for leaktightness of tile obturator on the seat and leaktightness of the tap upstream of the obturator
9.2.2.1 Water test
9.2.2.1.1 Pmctdu,’
— Connect the tapware to the test circuit..
— Apply a water 1)rsLne of (1,6 ± 0,05) MPa
(16 ± 0,5) bar to the tap for (60±5) s.
— Apply a water pressure of (0,1 ± 0,0 1) MPa
(1 ± 0,1) bar for (60 ± 5) s.
9.2.2.1.2 Requ. i,rmen.Is
a) Verification of leaktightness of the obturator. For the duration of the test, there shall be no leakage through the 01)1 urator.
b) Verification of leaktightness upstream of the 01)1 urator.
For the duration of the test, there shall be no leakage or seepage through the walls.
9.2.2.2 Air tist under water
9.2.2.2.1 Prrx’edure
— Connect. the tapware to the test circuit.
— Completely irnnwrse the tapware in the tank.
— Apply an air pressLire of (0,6 ± 0jX3) MPa
(6± 0,3) bar for (20±2) S.
9.2.2.2.2 Requ in’ment
For the duration of the test there shall he no release ot’ air bubbles.
9.2.3 Test of ieaktightness of the tap downstream of the obturator
9.2.3.1 Water test
9.2.3.1.1 Proeethiir
— Cotuiect the tapware to the test circuit.
— With the outlet orifice closed and generally
(hrected (lownwar(Ls, open the ol)t urator.
NOTE. For Iapware which nonnally closes automatically on release of the operatmg member, continue to hold the obturator mechanically in the open position during testing.
— Apply a water pressure of (0,4 ± 0,02) MPa
(4±0,2) bar for (60±5) s.
— Apply a water prsL1re of (0,02 ± 0,005) MPa
(0,2 ± 0,05) bar for (60±5) s.
N()TE. For Iapware whh hydraulic opening. the O,0’2 MPa (0,2 bar) test is not mandatory.
9.2.3.1.2 Requirem eats
For the (luratlon of the test. there shall he no leakage or seepage through the walls.
9.2.3.2 Air test under water
9.2.3.2.1 Procedure
— Connect the tapware to the test circuit
— With the outlet orifice closed and generally
directed upwar(ls, open the ol )t tirat or.EN 816-1996 pdf download.