JIS-B-9911-1968-R2007-ENG.pdf
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1、UDC 621.643.415: 614.843.2 1. JIS JAPANESE I NDUSTRIAL STANDARD Dimensions of Insert Type Couplings for Fire-Hose JIS B 99 I I -1968 . Translated and Published by Japanese Standards Association Printed in Japan Translation without guarantee In the event of any doubt arising, the original standard in
2、 Japanese is to be evidence -,-,- STD-JIS B 7733-ENGL L7b8 m 4733b08 OS44322 487 m UDC 621.643.415: 614.843.2 JAPANESE INDUSTRIAL STANDARD J I S Dimensions of Insert Type Couplings for Fire-Hose B 9911-1968 (Reaffirmed: 1984) 1. Scope This Japanese Industrial Standard specifies the dimensions of ins
3、ert type couplings( for fire-hose, hereinafter, referred to as the llcouplingslf. Note (I) The type in which a hose is mounted on the outsides of the tail end male and female of a coupling. 2. Names of Respective Parts The names of parts of the coupling shall be as given in the following: Locking ri
4、ng Rubber band D . . L L - - -.-.-IA - Rubber band Rubber packing Claw washer T a i l end female I I 3. Classification The couplings shal be classified, according to their nominal sizes, into four sizes of 40, 50, 65 and 75. 4. Dimensions The dimensions of parts of the coupling shall be in accordanc
5、e with the follow- ing: Reference Standards : JIS B 0202-Parallel Pipe Threads JIS B 0951-Knurling -,-,- 2 B 9911-1968 4.1 Tail End Female Unit: mm Fine .Dimension Nominal aon of Nominal size (dl 40 60 38. O 33. o 50 75 51. O 44.5 65 92 63.5 57. o 75 106 76.0 69.0 Unit: mm 44 57 16 a 56 74 19 a 7 82
6、 I 105 I 24 I 14 I 8 1 19.0 Remarks 1. Dimensions on which tolerances are not specified are recommend- ed dimensions. 2. The basic profiles, basic dimensions of the screw threads and the dimensional deviations and tolerances of the threads shall be as given i n Attached Tables 1 and 2. -,-,- STD-JIS
7、 B 7911-ENGL L9b8 = 4733b08 0544124 25T = Dl D Z -k + 0.2 * 0.3 40 60 65 57.5 46 50 75 81 72.5 59 65 92 99 89.5 73 75 106 I 114 1 103.5 86 3 B 9911-1968 1 L i La Min. : M i n . Min. 21 10 3 24 10 4 30 12 5 37 16 6 4.2 Locking Ring Unit: mm w Unit: mm Remarks 1. Dimensions on which tolerances are not
8、 specified are recomended dimensions. 2. The basic profiles, basic dimensions of the screw threads and the dimensional deviations and tolerances of the threads shall be as given in Attached Tables 1 and 2. STD- JIS D 11 l2 fl 4 B 9911-1968 12 4.3 Claw Washer f 0.2 40 57.5 44.5 50 72.5 57. O 65 89.5
9、71. O 75 103.5 84. o B 9911-ENGL 17b W 4733b08 054qL25 17b W - + 0.2 O + 0.1 + 1 + 0.2 - 3. O 4. O 4.5 10.8 o. 5 4.5 12.8 44 3. O o. 5 Unit: mm W Remark: Dimensions on which tolerances are not specified are recomended dimensions. STD-JIS B 9911-ENGL L9b 4733b 0549L2b O22 d D *0.2 + 0 . 2 O Nominal s
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