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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?
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0 K3 C- V x% h* X0 |* r# w+ p F0 ~7 V27.2 One sample is to be subjected to 100,000 cycles of complete opening and closing of the valve.% t+ `7 R' j$ H! `) y, p" n
When the construction incorporates an overpressure shutoff device that is in accordance with 14.1(b) and
! r; o7 }$ ^' y1 b$ _& Cthat is activated by the regulator linkage mechanism, the sample is to be subjected to the number of
8 N5 T7 z+ y7 G; ?, g* R, ocycles and test conditions covered in 27.6. When the construction utilizes nonmetallic materials in the% D) N8 }; S! m) [3 U/ L
linkage assembly a second sample is to be subjected to the test conditions specified in 27.5. |
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发表于 2009-2-1 09:56:27
发表于 2009-2-1 12:35:07
楼主