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略字-DCDA와 RPDA | |||||
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관리자 | ![]() |
2023-02-27 | ![]() |
367 | |
DCDA: double check detector fire protection backflow prevention assembly/ 복식첵밸브 누설탐지형 역류방지밸브 RPDA: reduced pressure zone detector fire protection backflow prevention assembly/ 감압식 누설탐지형 역류방지밸브 |
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略字-AVB와 PVB |
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略字-FPV와 SPV |