产品介绍立井防爆门主要用于立井，其适用风机负压，能保证风机停止运转时自动升起，有不大于3432Pa和4413Pa两种。技术参数型号及规格图标图号最大负压（KPa）MFBL-3.0/450B78-375.14.41MFBL-3.5/450B78-375.2MFBL-4.0/450B78-375.3MFBL-4.5/450B78-375.4MFBL-5.0/450B78-375.5MFBL-5.5/450B78-375.6MFBL-6.0/450B78-375.7MFBL-6.5/450B78-375.8MFBL-7.0/450B78-375.9 MFBL-3.0/350B78-375.103.43MFBL-3.5/350B78-375.11MFBL-4.0/350B78-375.12MFBL-4.5/350B78-375.13MFBL-5.0/350B78-375.14MFBL-5.5/350B78-375.15MFBL-6.0/350B78-375.16MFBL-6.5/350B78-375.17MFBL-7.0/350B78-375.18
