Abstract： ASME A112.1002:2020 pdf download.Anti-siphon fill valves for water closet tanks. 3.9 Pressure-relief devices For pressure.releevlng devices, pressure relief shall occur at a pressure of at least 1030 kPa (150 psi), and the relief discharge...

ASME A112.1002:2020 pdf download.Anti-siphon fill valves for water closet tanks.

3.9 Pressure-relief devices

For pressure.releevlng devices, pressure relief shall occur at a pressure of at least 1030 kPa (150 psi), and the relief discharge shall be into the fixture.

Section IV

4 Performance requirements and test methods

4.1 General

Tests shall be conducted in the order in which they are listed in this Standard on one test specimen,

4.2 Preconditlonlng and test conditions

4.2.1 Preconditloning

Before testing, the device shall be conditioned at ambient laboratory conditions for not less than 12 h.

4.2.2 Test conditions

Unless otherwise specified in this Standard, tests shall be conducted at ambient laboratory conditions.

4.3 Test specimen installation

For test purposes, specimens shall be installed in accordance with the manufacturer’s instructions.

4.4 Pressure and temperature tests

4.4.1 Pressure and temperature cycling test

4.4.1.1 Purpose

The purpose of the elevated pressure and temperature cycling test is to

a) evaluate the performance of the device at elevated temperatures and pressures: and

b) ensure that the device has a means for securing the refill tube to the overflow tube and that it remains in

place during the test.

4.4.1.2 Procedure

The elevated pressure and temperature cycling test shall be conducted as follows:

a) Install the specimen In a tank In accordance with the manufacturer’s instructions.

b) The water in the tank may be displaced to accelerate the test, provided the flush volume range given by Clause 4.4.1.2 c) is maintained.

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