가스 밸브실 공사
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질문입니다: 가스용 강제 밸브와 PE 밸브의 밸브 하우징에도 모두 모래를 채워야 하나요? 모래를 채우는 역할은 무엇인가요?
누출된 천연가스가 공기와 섞여 폭발성 가스가 되는 것을 막아야 합니다
가연성 물질이 낮은 곳에 쌓여 화재나 폭발이 일어날 수 있으므로, 모래로 메워줍니다.
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