CSA 9.1:2009 pdf download.American National Standard/CSA Standard for Manually Operated Gas Valves For Appliances
This test shall be conducted at room temperature. A new sample shall be subjected to the specified test.
a. The inlet and outlet connections of the valve shall be assembled leak tight to the appropriate fittings as described below. The length of the inlet fitting shall be such that, after assembly, the dimension from the valve inlet to the end of the inlet fitting will be 1 3 in (330 mm) ± ‘/ in (12.7 mm). The tightening torque for threaded pipe or tubing connections shall be one-half that shown in Table IV, Torques For Turning Effort Test.
1. Pipe threaded connections shall be assembled to Schedule 40 iron pipe, or pipe fitting, using non-Teflon type joint compound.
2. Tubing connections shall be assembled to steel tubing which conforms to the Standard for Welded and Cold Drawn Low Carbon Steel Tubing Annealed for Bending and Flaring, ANSI/SAE 1525, and has a minimum wall thickness of 0.028 in (0.71 mm), using the attachment means specified by the manufacturer.
3. Connections designed for other than threaded pipe or tubing shall be assembled to test fixture(s) representative of the intended connection means.
b. The valve outlet fitting shall be rigidly supported 1 in (25.4 mm) from the valve outlet, unless the following exceptions apply. When the valve has an integral mounting means independent of the inlet and outlet connections, the valve shall be mounted using the integral mounting means as specified by the manufacturer. When the valve is intended to be mounted by either the integral mounting means or the valve outlet, the mounting means which produces the most severe test condition shall be used.
The valve inlet shall be in the horizontal position.
c. A flow-measuring device, capable of accurately indicating the allowable leakage rate, shall be connected to the valve inlet fitting. A system, capable of supplying air or gas at the test pressures specified, shall be connected to the inlet of the flow-measuring device. The valve assembly shall then be tested for leakage as specified in 2.2, Leakage, and shall comply.
d. With the valve in the closed position, the system shall be pressurized at 21 in wc (5.23 kPa) and the appropriate weight as specified in Table Ill, Load For Bending Moment Test, shall then be suspended on the inlet fitting, without shock, 12 in (305 mm) from the inlet of the valve for 15 minutes. Without removing the weight, the valve shall then be tested for leakage as specified in 2.2, Leakage, except at a maximum pressure of 21 in wc (5.23 kPa).CSA 9.1 pdf download.