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CSA 6.3-2007 pdf free download
CSA 6.3-2007 pdf free download.Gas Appliance Pressure Regulators.
2.6 Mounting Regulator For Test
Standard weight pipe (Schedule 40,. API 5 1 Grade B) of proper size, reamed to remove burrs caused by cutting, shall be properly fitted to the inlet and outlet connections of the regulator. When a regulator is provided with semirigid tubing connections, fittings and semirigid tubing of the proper size reamed to remove burrs caused by cutting shall be used instead of standard weight pipe.
The length of straight run of pipe before the inlet pressure tap shall not be less than 50 pipe diameters (l.D.), or in accordance with the principles established for pipe tap connections as presented in Gas Measurement Committee Report No. 3, Edition, for the Orifice Metering of Natural Gas. The length of straight run of pipe between the regulator and any downstream controlling means shall be 10 pipe diameters (l.D.).
Three short lengths of pipe or metal tubing having a small diameter shall be soldered to the pipe or semirigid tubing, one before the inlet and the other two after the outlet connection. The pressure tap before the inlet shall be located 5 pipe diameters from the discharge end of the inlet pipe or tubing. The two pressure taps after the outlet connection shall be located 180 degrees (3.14 rad) apart and 5 pipe diameters from the inlet end of the discharge pipe or tubing. A ‘/6 in (1.6 mm) diameter drill shall be inserted in each short length of pipe or metal tubing and a hole drilled through the wall of the larger pipe or semi-rigid tubing, care being taken to remove any burrs caused thereby.
The pilot takeoff, if provided, of regulators to be tested under 2.10, Regulators Designated To Operate At Pilot Flow Rate, and 21 1 .6, shall be equipped with a pipe tee of suitable size. A pilot flow line consisting of /8 in pipe, 2 / in (69.9 mm) long, shall be attached to one end of the tee. If a pilot takeoff is not provided and the tests specified in 2.10 and 2.11.6 are to be conducted, a pilot flow line also consisting of ‘/ in pipe, 2 V4 in (69.9 mm) long, shall be attached to the side of one of the two pressure taps on the discharge side of the regulator under test.
The regulator shall be placed in the mounting position specified in 1.1.5 for the particular test to be conducted. The pressure tap on the inlet side and one of the pressure taps on the outlet side shall be connected to independent pressure measuring devices having an accuracy of 1 percent at the observed value as well as to a differential gage (one tap being connected to each side) which has an accuracy of 1 percent at the observed value. An adjustment control valve system of the same size as the regulator under test, permitting precise control, shall be installed not less than the above specified number of pipe or tubing diameters from the regulator under test. To permit the interruption of gas flow through the regulator without changing the adjustment control system, an automatic valve having an opening time of 0.1 second or less from initial flow to a capacity greater than the maximum regulation capacity of the regulator being tested shall be provided downstream from the regulator under test.
Typical arrangements of the required test apparatus are shown in sections A and B of Figure 2, Typical Arrangement of Test Apparatus, (or sections A and B of Figure 1 1,Typical Arrangement of Test Apparatus for Negative Pressure Regulators).CSA 6.3-2007 pdf free download.
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