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在UL 144中写到activated by the regulator linkage mechanism请问这是一种什么类型的调压器?+ x- Y* O) X2 D5 @
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3 q, S; L! Z0 n8 j; X27.2 One sample is to be subjected to 100,000 cycles of complete opening and closing of the valve.
6 M3 O) m2 {8 a% Z$ f, rWhen the construction incorporates an overpressure shutoff device that is in accordance with 14.1(b) and) C; R' ?: `, K/ A, H0 l
that is activated by the regulator linkage mechanism, the sample is to be subjected to the number of
0 Y5 U8 J. z* Q c* U$ lcycles and test conditions covered in 27.6. When the construction utilizes nonmetallic materials in the3 z" d1 H" f- Z9 g" I( E2 ^) c& v
linkage assembly a second sample is to be subjected to the test conditions specified in 27.5. |
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