ASME A112.1002:2020 pdf free download

ASME A112.1002:2020 pdf free download

ASME A112.1002:2020 pdf free download.Anti-siphon fill valves for water closet tanks.
3.2 Temperature
Devices shall be designed to function at a temperature range of 5 to 49 C (40 to 120 F).
3.3 Bowl refill tube
3.3.1 Installed position
The bowl refill tube, when supplied, shall be sufficiently rigid to maintain its installed position.
3.3.2 Retrofit devices only
The means of securing the bowl refill tube shall not obstruct a cross-sectional area of the tank overflo tube by more than 20 mm2 (0.031 in).
Note: When a water closet rank is equipped with on anti-siphon fill valve osortgioal equipment, the required overflow performance i determined in accordance with ASME A112.19.2/CS4 845.1.
3.4 Backflow prevention
The device shall be equipped with a means to prevent backflow. Air inlet ports shall be protected to reduce the risk of the intake of foreign material into the device.
3.5 Dimensional criteria for fill valve components — End connections
Except when proprietary (i.e., non-standard) shanks or inlets are provided by the manufacturer, the dimensions of standard shanks or inlets designed to mate with standard coupling nuts or locknuts shal be as specified in Figure 1.
Standard shank or inlet thread dimensions shall be 15/16-14 UNS-1A as specified in ASME B1.1.
Standard coupling nut or locknut thread dimensions shall be 15/16-14 UNS-1B as specified in
ASME B1.1.
Note: The recommended standard major and pitch thread diameters are the following:
a) Nominal shank thread —
I) major diameter: 23.37 to 23.77mm (0.9204 to 0.9359 in); and
ii) pitch diameter: 22.39 to 22.50mm (0.8816 to 0.8895 in).
b) Nominal locknut and coupling nut thread — l minor diameter: 21.85 to 22,05 mm (0.8602 to 0.8681 in); and
ii) pitch diameter: 22.63 to 2230mm (0.8913 to 0.3014 in).
Proprietary shanks or inlets shall be designed to mate with common supply connections.
3.6 Seating members
Seat disc arrangements shall be replaceable.
3.8 Servicing
The device shall be designed so that replacement of wearing parts can be accomplished
a) without removing the fitting from the supply system;
b) without removing the piping from the body;
c) without disturbing the finished wall; and
d) using standard tools or manufacturer-provided tools.
3.9 Pressure-relief devices
For pressure.relieving 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 Preconditioning and test conditions
4.2.1 Preconditioning
Before testing, the device shall be conditioned at ambient laboratory conditions for not less than 12 h.