Media Summary: اداه تستخدم في انطمة dry system و pre action system لزيادة سرعة فتح dry pipe valve and preaction deluge valve MY FACEBOOK ... ... الفقدان في ضغط الغاز ولكنه يكون غير كافي وتعمل A detailed animation of Viking's Model F Dry System depicts all its system components and their interaction during the activation ...
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