New Zealand Gazette – 1981 – No. 145

Page 3682

✨ CNG Cylinder Approvals



  1.                                                             THE NEW ZEALAND GAZETTE                                                                 No. 145
Manufacturer MOT Reference Drawing Number Material Specification Independent Inspection Authority Nominal Water Capacity (litres) Test Pressure (MPa) Working Pressure Rating (MPa)
T.I. Chesterfield, U.K. AF C03 048 46667 C rev 1 Steel DOT 3AA Lloyds 62.1 31 16.5
AF C03 049 46667 C ref 2 Steel DOT 3AA Lloyds 42.3 31 16.5
AF C03 050 46667 C ref 3 Steel DOT 3AA Lloyds 54 31 16.5
AF C03 051 46666 C ref 1 Steel DOT 3AA Lloyds 67.7 31 16.5
AF C03 052 46666 C ref 2 Steel DOT 3AA Lloyds 42.8 31 16.5
AF C03 053 46666 C ref 3 Steel DOT 3AA Lloyds 54.5 31 16.5
Sumitomo Metal (Sumikin), Japan AF C03 054 SE 042 rev 1 Steel DOT 3AA Inteco 47.3 27.5 16.5
AF C03 055 GE 921 Steel DOT 3AA Inteco 49.3 27.5 16.5
AF C03 056 SE 043.1 Steel DOT 3AA Inteco 43.5 27.5 16.5
US Steel Corp., USA AF C03 057 4 × 14645 Steel DOT 3AA 61.45 29.26 16.5
AF C03 058 4 × 14645 Steel DOT 3AA 75 29.26 16.5
AF C03 059 4 × 14645 Steel DOT 3AA 88.6 29.26 16.5
AF C03 060 4 × 14645 Steel DOT 3AA 101.2 29.26 16.5
AF C03 061 4 × 14645 Steel DOT 3AA 115.8 29.26 16.5
AF C03 062 4 × 14645 Steel DOT 3AA 129.4 29.26 16.5
AF C03 063 4 × 14645 Steel DOT 3AA 143 29.26 16.5
US Steel Corp., USA AF C03 064 4 × 14476 Steel DOT 3AA 49.8 27.8 16.5
AF C03 065 4 × 14476 Steel DOT 3AA 60.8 27.8 16.5
AF C03 066 4 × 14476 Steel DOT 3AA 71.9 27.8 16.5
AF C03 067 4 × 14476 Steel DOT 3AA 82.9 27.8 16.5
AF C03 068 4 × 14476 Steel DOT 3AA 94 27.8 16.5
AF C03 069 4 × 14476 Steel DOT 3AA 105 27.8 16.5
AF C03 070 4 × 14476 Steel DOT 3AA 116.1 27.8 16.5
US Steel Corp., USA AF C03 071 4 × 145732 Steel DOT 3AA 177 34.5 16.5
Showa Koatsu Kogyo, Japan AF C03 072 ES 48020 NBE Steel DOT 3AA 125 27.5 16.5

CNG cylinders are approved subject to the following conditions—

  1. That they be permanently and clearly marked, either on a thickened portion of the cylinder or on a suitably attached metal plate, with characters not less than 6 mm high if space permits but in any case not less than 3 mm high, displaying the following information:
    (a) The specification to which the cylinder was manufactured.
    (b) The manufacturer’s name or mark, and the serial number of the cylinder.
    (c) The date of the original cylinder inspection and the identification mark of the inspection authority who made the inspection.
    (d) The date of any periodic cylinder test and the identification mark of the cylinder testing station who made each test.
    (e) The cylinder test pressure.
    (f) The charging pressure of the cylinder at 15°C.
    (g) The nominal water capacity of the cylinder.
    (h) The tare weight of the cylinder.
    (i) An identification that the cylinder is suitable for use with CNG.
  2. That the cylinders be provided with valve threads of the form specified in British Standard BS 341 “Valve Fittings for Compressed Gas Cylinders”.
  3. That the cylinders be tested at periods not exceeding five years in accordance with the periodic test requirements laid down in the specification to which the cylinder was manufactured.
  4. That the cylinder be provided with a cylinder shut-off valve designed for a working pressure of 16.5 MPa and capable of withstanding the test pressure of the cylinder. Cylinder shut-off valves shall be fitted with a hand wheel to facilitate ease of opening and closing of the valve and shall be fitted with a pressure relief device comprising of a burst disc backed by fusible alloy. The fusible alloy is to have a nominal yield temperature of 100° Centigrade and the burst disc shall yield at a pressure of not less than 24.75 MPa and not more than the test pressure of the cylinder. Cylinder valves shall be provided with an outlet thread of ¼ inch NPT (female) and a stem thread compatible with the cylinder neck thread.

CNG Master Shut-off Valves
See General Approvals listing plus the following:

MOT Reference Description
AF C05 001 Filling valves supplied as original equipment with CNG fuel systems approved by the Italian Ministry of Transport when used to provide the function of a master shut-off valve.
AF C05 002 Hoke model 7115F4B shut-off valves manufactured by Hoke Inc. of the United States.
AF C05 003 Parker CPI shut-off valves manufactured by Parker Hannifin Corp., of the United States.
AF C05 004 Nupro P4T series shut-off valves manufactured by the Nupro Company of the United States.
AF C05 005 Whitey 43 series shut-off valves manufactured by the Whitey Co. of the United States.


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🚂 Approval of CNG Fuel Cylinders (continued from previous page)

🚂 Transport & Communications
CNG fuel cylinders, Approvals, Manufacturers, Specifications