Protectoseal 52500系列人孔缓解压力和真空盖，同时提供紧急救济和真空压力减轻时，一个储存罐人孔安装。在紧急情况下（火的坦克外部的参与），正常的通风装置可能太小，以防止油箱超压。该系列号52500提供了必要的泄压能力，以保持在一个安全的工作范围罐。
产品规格表 - PDF格式。（西班牙语|中文）.
安装及维修指南 - PDF格式。（西班牙语|中文）“通过24（DN的400）”（DN的600）.
尺寸16。
通风口直接到大气中。
设置达到负重。
Reseats自动。
ProFlow ®尺寸/选型软件。
砖利，配屋电影“气垫座位”.
低泄漏托盘设计 - 。认证测试报告。
与欧洲ATEX 94/9/EC指令符合。
EMERGENCY PRESSURE / VACUUM MANHOLE COVER VENT
Series No. 52500
Protectoseal Series No. 52500 Manhole Cover with pressure and vacuum relief, provides both emergency pressure relief and vacuum relief when installed on the manhole of a storage tank. In emergency situations (external fire involvement of the tank), normal venting devices may be too small to prevent overpressurization of the tank. The Series No. 52500 provides the necessary pressure relief capacity to maintain the tank in a safe operating range. The integral vacuum vent provides additional protection against tank collapse due to excessive vacuum in the vapor space..
- Product Specification Sheet - PDF ( Spanish | Chinese )
- Installation & Maintenance Instructions - PDF ( Spanish | Chinese )
- Sizes 16" (DN 400) through 24" (DN 600)
- Vents directly to atmosphere
- Settings achieved by weight loading
- Reseats automatically
- ProFlow® Sizing/Selection Software
- Patented, FEP Film "Air-Cushioned Seating"
- Low-leak pallet design - certified test reports
- Conforms with European ATEX Directive 94/9/EC
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