Protectoseal 53300系列紧急压井盖通风口提供紧急救济储罐压力以及油罐清洗，检查和维修工作方便。它们被设计为安装在坦克的沙井开口，并提供大量减轻蒸气的一种手段，超出了正常经营能力发泄'系列5.33万沙井盖不提供救济的真空。真空救济必须由操作孔（见Protectoseal型号830，型号8540H，型号6240，型号16240和型号18540）。
当一个法兰坦克上正确安装沙井开幕，系列号5.33万井盖通风提供了一个有效的汽体密封。在紧急火灾情况下，打开通风，让蒸气逸出，并防止损坏水箱因压力过大。封面必须手动重新定位后，排气发生。
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。
铜焊线防止覆盖损失。
覆盖便于拆装箱允许访问。
设置达到负重。
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。
非金属（热塑性树脂及玻璃钢）型号。
与欧洲ATEX 94/9/EC指令符合。
EMERGENCY PRESSURE
MANHOLE COVER VENT
Series No. 53300
Protectoseal Series No. 53300 Emergency Pressure Manhole Cover Vents provide emergency pressure relief for storage tanks as well as convenient access for tank cleaning, inspection and repair work. They are designed for installation on the manhole openings of tanks and provide a means of relieving large volumes of vapors, beyond the capacity of a normal operating vent, if an emergency fire involvement of the tank should occur. Series 53300 Manhole Covers do not provide vacuum relief. Vacuum relief must be supplied by operating vents (See Protectoseal Model No. 830, Model No. 8540H, Model No. 6240, Model No. 16240 and Model No. 18540).
When properly installed on a flanged tank manhole opening, the Series No. 53300 Manhole Cover Vent provides an effective vapor seal. Under emergency fire conditions, the vent opens fully to allow escape of vapors and prevent damage to the tank due to excessive pressure. The cover must be manually repositioned after venting has occurred.
- Product Specification Sheet - PDF ( Spanish | Chinese )
- Installation & Maintenance Instructions - PDF ( Spanish | Chinese )
- Sizes 16" (DN 400) through 24" (DN 600)
- Vents directly to atmosphere
- Copper bonding wire prevents loss of cover
- Easy removal of cover allows for tank access
- Settings achieved by weight loading
- ProFlow® Sizing/Selection Software
- Patented, FEP Film"Air-Cushioned Seating"
- Low-leak pallet design - certified test reports
- Non-metallic (Thermoplastic Resin & FRP) construction available
- Conforms with European ATEX Directive 94/9/EC
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