美国阿姆斯壮双金属疏水阀

SH-900 Series Bimetallic Superheat Steam Traps

Carbon Steel/Stainless Steel

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For pressures to 900 psig (62 bar) . . .
Capacities to 11,000 lb/hr (4990 kg/hr)

SH-900 Series Superheat Steam Traps operate by the effect that rising temperature has on the thermostatic bimetallic elements.

At start-up, the valve is wide open, which allows a large volume of non-condensables and cold condensate to be removed from the system. When the system reaches steam temperature, the elements become sufficiently hot to pull on the trap’s valve stem, closing the valve.

The valve remains closed until the bimetallic elements cool, thus allowing the valve to crack open, vent the condensate and non-condensables, and then close again when steam temperature is reached.

The SH Series Superheat Steam Traps adjust automatically to changing conditions. Hot elements in the valve generate forces to offset rises in pressure.

双金属型过热蒸汽疏水阀

双金属型蒸汽疏水阀能够处理大的启动负荷。当系统温度和压力增大时，疏水阀的叠层式镍－铬双金属元件开始延展，当蒸汽到达疏水阀时紧闭阀门从而防止了蒸汽损失。 

双金属型疏水阀能抵抗水击作用。依靠钛质阀瓣和阀座，双金属型疏水阀确保在过热蒸汽系统恶劣环境仍保持超长使用寿命。