1
Appendix -A
Test Methods and Procedures for Testing of assemble unit of PVC and PP Clamp on Saddle
with ferrule
Test 1:
Resistance to internal pressure of the body and of all pressure containing components
Requirement: Body shall be able to withstand against the pressure and time duration as
described in Table A.1 of the standard 1452-4:2009 without deformation,
breakages, rupture, fracture or any other damages which shall not impair
the function and leak tightness of the ball valve after completion of the test.
Acceptance criteria:
Visual leakage or sweating of the body and shall not be found during the
test.
Test procedure for testing of Resistance of valve body to internal pressure
(Extracted from ISO 1452-4:2009; Table A.1 - Resistance of valve body to internal pressure)
Characteristic
Requirement
Type of test
pieces
Test Parameters
Temperature Pressure
0
Internal
pressure
No
failure
during
the
teas period
Injectionmoulded
valve bodies
C
Ambient
Temperature
bars
3.36 x PFA
(corrected)
2.56 x PFA
(corrected)
Test Method
Test
Period
h
1
1000
Type of
test
Waterin
Water
ISO 1167-1 and
1167-3 or BS EN
917:1997, BS
2782-11:
Methods 1134 A
&B
PFA – Allowable maximum operating pressure specified by the manufacturer.
PFA (Corrected) – correction of the pressure against temperature variation in operating
condition
Test Method:
Test specimen (Clamp saddle) and the apparatus as shown in the figure below should be
filled without air bubbles and should be pressurized as specified in the above table. Pressure
should be maintained with help of the air accumulator.
Procedure:
High pressure is applied during 1 h and visual leakage and sweating on the body will be
observed. If any type of leakage or sweating is not visualized on the body, low pressure test
will be conducted.
Test 2:
High pressure liquid test for leak tightness to internal pressure (seal properties) (1.1 x PN Rate
specified by manufacturer):
-------------------------------------------------------------------------------------------------------------------------------------Save Name: TestMethodsProceduresPVC-ClampSaddles
By: NJ
2
Assembled valve shall be tested at fully close position at internal pressure of 1.1 x PN Rate
specified by manufacturer with the facility of visual leak detection.
Requirement:
The assembled unit shall be leak tight on the pipe.
Acceptance Criteria:
There shall not be found visual leakage or sweating (i.e. Class A leakage rate is specified by
Table 3 of BS EN 12266-1:2012. at any point around the pipe and joint.
Test Piece- Assembled Unit of Clamp Saddle and Ferrule:
-------------------------------------------------------------------------------------------------------------------------------------Save Name: TestMethodsProceduresPVC-ClampSaddles
By: NJ
3
Test 3: Vacuum Test:
Resistance to vacuum generated in pipe line
Requirement: The assembled unit shall withstand to negative pressure of 600 mm Hg (160
mm hg (absolute pressure) without sucking water or air into the pipe.
Acceptance criteria:
Water or air sucked into the system shall be zero for the test duration of
minimum 30 min.
Test method:
Assembled unit is immersed in water tank and vacuum to 600 mm Hg for the period of 30 min.
Test apparatus is shown in Fig. .
-------------------------------------------------------------------------------------------------------------------------------------Save Name: TestMethodsProceduresPVC-ClampSaddles
By: NJ
4
Test 4:
Durability Test:
Durability shall be based on the fatigue failure due to internal pressure fluctuation inside the
pipe according to the different magnitude of soil resistance experienced on the clamp
saddle vertically and horizontally on variation of internal pressure of the pipe
Note: The soil resistance generated vertically against the pressure variation inside the pipe is
greater than the resistance generated horizontally. The clamp assembled unit is therefore
deflected diametrically outward in horizontal direction and the magnitude will be varied
according to pressure variation inside the pipe. Accepting this phenomena in the working
clamp unit, the limitation of fatigue failure in number of cycles deflecting within the
accepting magnitude of diametrical deflection of the clamp saddle can be find out by
experimentally in the laboratory. Test apparatus is as in Fig. .
Requirement:
Fracture and rupture or any type of deformation shall not impair the function and leak
tightness of the clamp saddle during or after completion of 100,000the test cycles.
Acceptance criteria:
-------------------------------------------------------------------------------------------------------------------------------------Save Name: TestMethodsProceduresPVC-ClampSaddles
By: NJ
5
Requirements and acceptance criteria of the test 1 and 2 described above shall be satisfied
after completion of the durability test.
-------------------------------------------------------------------------------------------------------------------------------------Save Name: TestMethodsProceduresPVC-ClampSaddles
By: NJ