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FM approved Safety Shutoff Valves
A safety shutoff valve is one of the most important protection devices used to safeguard oil-fired equipment, such as boilers, furnaces, ovens and dryers, from fire and explosion hazards in the "lighting-off" and "firing" operations. It is usually considered the key safety device because the protection provided by other safety devices depends on this valve to shut off the fuel supply if unsafe conditions exist.
安全切断阀是一个用于保障燃油及气体设备的**重要的保护装置，如锅炉，熔炉，烤炉和烘干机等设备防止火灾发生的开或关控制。
它通常被认为是关键性的安全保护装置：在不安全的条件下，其他的设备主要依靠这个阀门关闭燃料的供应进而保证系统的安全。
A safety shutoff valve is approved by FM. It is in operation is held open either by electric energy or by pressure (oil, gas, air or atomizing medium) or by both. It can be opened, either manually or automatically within five seconds after the holding medium (electric or pressure) is cut off.
安全切断阀拥有FM认证。它的控制主要是依据电启动或压力启动（油，天然气，空气或者雾化介质）或者两者兼而有之。它能通过手动或者自动，在5秒内自动关闭或打开阀门。
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