European foreword ....................................................................................................................................................... 4
5 Characteristics ................................................................................................................................................. 8 5.1 Construction ...................................................................................................................................................... 8 5.2 Combined protection unit ............................................................................................................................ 8 5.3 Stop valves ......................................................................................................................................................... 8 5.3.1 Valves with discharge function .................................................................................................................. 8 5.3.2 Valves without discharge function............................................................................................................ 8 5.4 Types of connection........................................................................................................................................ 8
6 Test methods and requirements ............................................................................................................... 9 6.1 Bending test ...................................................................................................................................................... 9 6.2 Torsion strength of control elements ...................................................................................................... 9 6.2.1 General ................................................................................................................................................................ 9 6.2.2 Test method ...................................................................................................................................................... 9 6.3 Mechanical endurance characteristics of the operating mechanism ........................................ 10 6.3.1 General ............................................................................................................................................................. 10 6.3.2 Test method ................................................................................................................................................... 10 6.3.3 Procedure........................................................................................................................................................ 11 6.3.4 Requirement .................................................................................................................................................. 12 6.4 Leak tightness characteristics ................................................................................................................. 12 6.4.1 General ............................................................................................................................................................. 12 6.4.2 Test methods ................................................................................................................................................. 12 6.4.3 Leak tightness of the valve upstream of the stop valve .................................................................. 13 6.4.4 Leak tightness of the valve downstream of the stop valve ............................................................ 13 6.5 Resistance under internal pressure upstream of the stop valve ................................................ 14 6.5.1 General ............................................................................................................................................................. 14 6.5.2 Principle .......................................................................................................................................................... 14 6.5.3 Apparatus ........................................................................................................................................................ 14 6.5.4 Mechanical behaviour upstream of the stop valve- stop valve in closed position ............... 14 6.5.5 Mechanical behaviour downstream of the stop valve - stop valve in open position ........... 14 6.6 Flow rate .......................................................................................................................................................... 15 6.6.1 General ............................................................................................................................................................. 15 6.6.2 Test methods ................................................................................................................................................. 15 6.7 Acoustic behaviour ...................................................................................................................................... 16 6.7.1 General ............................................................................................................................................................. 16
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6.7.2 Procedure ........................................................................................................................................................ 16 6.7.3 Expression of results ................................................................................................................................... 16 6.7.4 Determination of acoustic group ............................................................................................................ 16
7 Test procedure............................................................................................................................................... 16 7.1 Type Test ......................................................................................................................................................... 16 7.2 Surveillance procedure .............................................................................................................................. 17 7.3 Self-surveillance ............................................................................................................................................ 17
8 Marking, labelling and packaging ........................................................................................................... 17
This document (EN xy:20xx) has been prepared by Technical Committee CEN/TC 164 “Water supply”, the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by XXXX, and conflicting national standards shall be withdrawn at the latest by XXXX.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
The requirements with regard to the drinking water quality are specified in national regulations.
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Introduction
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1 Scope
This European Standard specifies general construction, performance and material requirements for sanitary tapware: PN 10 frost resistant outdoor proof taps (FPT). The application in the drinking water installation with a static pressure of maximum 1,0 MPa (10 bar) and a distribution temperature of 65°C. Occasional excursions up to 90°C are permitted for a period of 1 hour maximum. The conditions of use are according to the following table:
Table 1 — Conditions of use
Supply Dimension Operating Range
Pressure
DN15 – DN20
(DN25 Homework for
P.Aschwanden)????
limits recommended
Pressure static – max. 1,0 Mpa (10,0 bar)
Pressure dynamic – min. ≥ 0.05 Mpa (0,5 bar) 0,1 to 0.5 Mpa (1 to 5 bar)
Temperature - hot 90°C 55 to 65°C
Temperature - cold 25°C 5 to 20°C
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN200, Sanitary tapware - Single taps and combination taps for water supply systems of type 1 and type 2 - General technical specification
DIN EN 1213, Building valves. Copper alloy stop valves for potable water supply in buildings. Tests and requirements.
EN 1254-2, Copper and copper alloys - Plumbing fittings – Part 2: Fittings with compression ends for use with copper tubes
EN 1717, Protection against pollution of potable water in water installations and general requirements of devices to prevent pollution by backflow
EN 13959, Anti-pollution check valves. DN 6 to DN 250 inclusive Family E, type A, B, C, and D.
EN 15096, Devices to prevent pollution by backflow of potable water. Hose Union anti-vacuum valves. DN 15 to DN 25 inclusive Family H, type B and type D. General technical specification.
EN ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads. Dimensions, tolerances and designation.
EN ISO 3822-1, Acoustics: Laboratory tests on noise emission from appliances and equipment used in water supply installations – Part 1: Method of measurement
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EN ISO 3822-2, Acoustics: Laboratory tests on noise emission from appliances and equipment used in water supply installations – Part 2: Mounting and operating conditions for draw-off taps and mixing valves
ISO 7-1, Pipe threads where pressure-tight joints are not made on the threads. Part 1: Dimensions, tolerances and designation.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 Frost resistant outdoor proof taps (FPT)
Frost resistant outdoor proof taps are defined by following types:
Frost proof by drainage or by volume compensation
pre-assembled or assembled on-site
fix and adjustable length
one or two outlets (must be safe for every outlet)
3.2 Nominal size (DN)
Nominal sizes of frost resistant outdoor proof taps, corresponding to EN ISO 6708, and related to the size of the connection ends
3.3 Nominal pressure (PN)
Nominal pressures corresponded to EN 1333.
3.4 End connections
Typical end connections defined in 5.4
4 Materials
All materials coming into contact with water intended for human consumption shall present no health risk nor cause any change of the drinking water in terms of quality, appearances, smell or taste.
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5 Characteristics
5.1 Construction
See 3.1!
5.2 Combined protection unit
A combined protection unit should be integrated in the complete product.
Backflow prevention and combination (EB in comb with DA or HA or HD and LB) has to be according to EN 1717.
5.3 Stop valves
5.3.1 Valves with discharge function
5.3.1.1 Requirement:
When using models with discharge function, the stop valve shall be located in a section not liable to frost.
5.3.1.2 Procedure
Visual inspection and test as defined in chapter 6.3.
5.3.2 Valves without discharge function
5.3.2.1 Requirement:
When using models with other protective mechanisms against destruction by freezing, the latter shall be located in a zone not liable to frost or work properly under frost conditions.
5.3.2.2 Procedure
Close the valve and fully fill with water (1.0 ± 0.05) MPa (10 ± 0.5 bar). Close the inlet with a plug. Then, freeze the valve at a minimum of (-16 -2) °C for 24 hours. The freezing space shall extend to (18± 1) cm from the rear edge of the escutcheon. Make a function and a leak-tightness test after defrosting.
5.4 Types of connection
Reference to EN1254 and EN1213
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6 Test methods and requirements
6.1 Bending test
No bending requirements in the KIWA- and the EN standard! Tbd
(see in the DIN 3509) and additional
Nm in which direction?
According to Manuf. Standards
Fixpoint exact described
A drawing
Leave in the document --> homework for proposal M. Kleine-Bußmann and R. Stader
6.2 Torsion strength of control elements
6.2.1 General
This clause describes a test method that shall be carried out to verify the torsional strength of the frost proof taps for outdoor use and specifies the test criteria.
6.2.2 Test method
6.2.2.1 Principle
The principle of the test consists of submitting the operating mechanism to a given torque to verify its strength, with no water supplied.
6.2.2.2 Apparatus
This consists of either a torque wrench having an accuracy of 2 % fitted to the operating member or a lever arm and a device for measuring the force applied.
6.2.2.3 Test piece
The tap with its operating mechanism with, in the case of screw down taps, the seat washer removed.
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6.2.2.4 Procedure
a) Fully open the obturator;
b) gradually apply over (4 + 2) s a torque of (6 0,2) Nm to the operating mechanism in the opening direction;
c) maintain this torque for (300 + 15) s;
d) fully close the obturator;
e) gradually apply over (4 + 2) s a torque of (6 0,2) Nm to the operating mechanism in the closing direction;
f) maintain this torque for (300 + 15) s;
g) reinsert the seat washer of screw down taps.
6.2.2.5 Requirement
Following the test:
There shall be no deformation or other deterioration which impairs the function of the frost proof taps;
The frost proof tap shall satisfy the requirement for leak tightness (chapter XY)
6.3 Mechanical endurance characteristics of the operating mechanism
6.3.1 General
This clause describes a test method that shall be carried out to verify the mechanical endurance of the operating mechanisms of the frost proof tap for outdoor and specifies the test criteria. The frost proof tap for outdoor shall first satisfy the leak tightness tests described in 6.4.3 and 6.4.4.
6.3.2 Test method
6.3.2.1 Principle
The principle of the test consists of checking the behaviour of the operating mechanism by carrying out a number of opening and closing operations with water at specified pressure/temperature and with a specified dwell time (see Table XY).
6.3.2.2 Apparatus
An automatic test rig, which rotates in both directions, the closing torque shall remain constant irrespective of wear of the test piece.
The set closing torque shall not be affected by the momentum of the equipment during the test.
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A supply circuit with a pump or a similar device, capable of producing the required pressure at a temperature 25 °C for the cold water and (65 2)°C for the hot water.
If the water is supplied by a circulation system, it is necessary to ensure that the quality of the water does not change during the test (e.g. ingress of grease or other contaminants).
A device to actuate the operating mechanism of the tap. This shall not impose, by virtue of misalignment or otherwise, any axial or radial forces that would not occur in normal use.
NOTE The test sample can show abnormal wear due to loads imposed by the test equipment resulting from eccentricity of the two axes. This results in pick-up on one side only due to lateral forces which do not occur in normal use. The tolerance on concentricity should therefore be as small as possible.
6.3.3 Procedure
a) Fit the tap to be tested complete with its handle onto the test rig and connect to the water supply circuit;
b) for taps with elastomeric washer(s), adjust the closing torque to a constant value of (2,5 0,25) Nm; for ceramic disc valves, adjust the closing torque to a constant value of (1,5 0,25) Nm;
c) with the tap closed, adjust the static water pressure, to (0,4 0,05) MPa [(4 0,5) bar];
d) with the tap open, adjust the flow rate, by throttling the outlet of the tap, to (6 1) l/min;
e) where leak tightness of the spindle is ensured by a stuffing box the gland nut is loosened as follows:
loosen the gland nut;
with the outlet orifice closed, open the obturator; apply a water pressure of 0,1 MPa (1,0 bar);
tighten the gland nut until a watertight seal is just obtained;
f) carry out XY (2'500) opening and closing cycles, with a speed as specified in the Table XY: using hot and cold water alternately for periods of (15 1) min each:
open to 75 % of the total opening movement;
dwell in the open position for (1 to 2) s;
close completely with a torque of (2,5 0,25) Nm or (1,5 0,25) Nm as appropriate and maintain this torque for time t 0,4 s;
retain the closed position for a total dwell time t of (2 to 3) s.
Table XY - Endurance Test conditions
Water temperature
- cold
- hot
25 °C
(65 2)°C
Flow rate adjusted by throttling outlet 6 1 l/min
Static pressure 0,4 0,05 MPa [(4 0,5) bar]
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Rotations per minute
- for elastomeric seal
- for ceramic valves
30 0,1 rpm
10 0,1 rpm
Dwell time in open position 1 to 2 s
Dwell time in closed position with applied torque 0,4 s
After testing, the frost proof tap shall again satisfy the leak tightness criteria given in Clauses 6.4.3 and 6.4.4, and there shall be no failure of any component part.
6.4 Leak tightness characteristics
6.4.1 General
This clause describes the test methods that shall be carried out to verify the leak tightness of the complete frost resistant outdoor proof taps and specifies the corresponding requirements.
6.4.2 Test methods
6.4.2.1 Principle
The principle of the test consists of checking under cold water pressure the leak tightness of:
the valve upstream of the stop valve (see chapter 6.4.3);
the valve downstream of the stop valve (see chapter 6.4.4)
6.4.2.2 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.
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6.4.3 Leak tightness of the valve upstream of the stop valve
6.4.3.1 Procedure
a) Connect the frost resistant outdoor proof tap to the test circuit;
b) with the outlet orifice open, and generally turned downwards, close the stop valve with a using torque of (2.5 0.15) Nm;
c) apply to the inlet of the frost resistant outdoor proof taps a water pressure of (1,6 0,05) MPa [(16,0 0,5) bar] and maintain it for (60 5) s.
6.4.3.2 Requirements
The stop valve and the body of the frost resistant outdoor proof tap shall show neither leakage nor drop formation during the test.
6.4.4 Leak tightness of the valve downstream of the stop valve
6.4.4.1 General
Not applicable when the outlet cannot be closed.
6.4.4.2 Procedure
a) Connect the frost resistant outdoor proof tap to the test circuit and vent;
b) if a stuffing box is used to ensure leak tightness of the headwork, ensure that the packing gland is tightened in accordance with the manufacturer’s 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.
6.4.4.3 Requirement
Throughout the duration of the test there shall be no leakage, or seepage through the walls.
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6.5 Resistance under internal pressure upstream of the stop valve
6.5.1 General
This clause describes the test method that shall be carried out to verify the mechanical performance under high pressure and specifies the test criteria.
6.5.2 Principle
The principle is to detect any deformation of the tap which may occur using cold water under pressure. The test is carried out both upstream and downstream of the stop valve.
6.5.3 Apparatus
A hydraulic test circuit, capable of supplying and of maintaining the required pressures for the duration of the test.
6.5.4 Mechanical behaviour upstream of the stop valve- stop valve in closed position
6.5.4.1 Procedure
a) Connect the frost resistant outdoor proof tap to the test circuit;
b) with the closed stop valve apply at the tap inlet(s) a static water pressure of (2,5 0,05) Mpa [(25,0 0,5) bar] for (60 5) s;
c) check whether there is permanent deformation in any part of the tapware upstream of the stop valve.
6.5.4.2 Requirement
For the duration of the test, there shall be no permanent deformation in any part of the tap.
6.5.5 Mechanical behaviour downstream of the stop valve - stop valve in open position
6.5.5.1 Procedure
a) Connect the frost resistant outdoor proof tap as supplied to the test circuit;
b) open the stop valve of the frost resistant outdoor proof tap fully;
c) for taps with a flow rate regulator fitted apply at the tap inlet a dynamic water pressure of (0,4 0,02) MPa [(4,0 0,2) bar] and maintain it for (60 5) s;
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d) for taps without flow rate regulator apply at the tap inlet, for (60 5) s, the water pressure needed to give a flow rate of (0,4 0,04) l/s through taps of nominal size ½ and a flow rate of (0,8 0,08) l/s through taps of nominal size ¾;
e) for taps with removable flow rate regulator, the test is carried out both with and without this regulator;
f) check whether there is permanent deformation in any part of the tapware downstream of the stop valve.
6.5.5.2 Requirement
There shall be no permanent deformation in any part of the tap.
6.6 Flow rate
6.6.1 General
This clause describes the test methods for measuring the flow rate of the frost resistant outdoor proof tap.
6.6.2 Test methods
6.6.2.1 Principle
The value of the flow rate corresponding to a reference pressure is determined, the measurement being carried out with the frost resistant outdoor proof tap fully open..
The flow rate of the frost resistant outdoor proof tap shall reach the minimum values of the values specified in following table XY at a dynamic pressure of (0,01 0,002) MPa [(0,1 0,02) bar].
Table XY - Flow rate requirements l/s
Dynamic pressure in MPa [in bar]
Flow rate in l/s
DN 15 1 ± 0.02 [0.1 ± 0.002] 0.2
DN 20 1 ± 0.02 [0.1 ± 0.002] 0.32
6.6.2.2 Procedure
a) The test has to be made with cold water ( 25°C)
b) Mount the frost resistant outdoor proof tap to be tested on the test rig
c) Fully open the stop valve and remove the hose union
d) As soon as the flow rate is stable, measure the corresponding flow volume, the value is to record
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6.6.2.3 Requirement
The flow rate of the frost resistant outdoor proof tap shall reach the minimum values of the values specified in table XY at a dynamic pressure of (0,01 0,002) MPa [(0,1 0,02) bar].
6.7 Acoustic behaviour
6.7.1 General
This clause describes a test method that shall be carried out to verify the acoustic group (I, II or not classified) of the frost proof taps for outdoor use and specifies the test criteria.
6.7.2 Procedure
The method of measurement shall be in accordance with EN ISO 3822-1 under the conditions specified in EN ISO 3822-2 with a setting temperature of (50 ± 1) ° C.
6.7.3 Expression of results
The results of the measurements taken in accordance with EN ISO 3822-1 to 4 are expressed by the noise emission of the tapware Lap in dB(A).
6.7.4 Determination of acoustic group
The acoustic group is determined by the value of Lap obtained at a flow pressure of 0,3 MPa (3 bar). The frost
proof taps is classified in acoustic group I, II or U as shown in table XY.
Table XY - Acoustic group
Group Lap in dB(A)
I 20
II 20 < Lap 30
(unclassified) > 30
Tbd
7 Test procedure
7.1 Type Test
Tbd
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7.2 Surveillance procedure
Tbd
7.3 Self-surveillance
Tbd
8 Marking, labelling and packaging
Frost resistant outdoor proof taps shall be marked permanently and legibly with:
the manufacturer's or agent’s name or identification - on the body or handle;
Nominal size (DN)
The acoustic group (see Table XY), if applicable - on the body. Tbd
