译文：
热静力型膜盒式蒸汽疏水阀（蒸汽压力平衡式）是目前国际上最常用的先进节能型疏水阀。膜盒式蒸汽疏水阀的反应非常灵敏，工作时阀前存有高温凝结水，无蒸汽泄漏，节能效果显著。 它的优点是：自动排空气，体积小，不怕冻，任意位置都可安装；维护方便，在管线上可以检查修理和更换零件；{zd0}背压率≤80%，膜盒坚固，使用寿命长。 适用于蒸汽主管线、蒸汽伴热管网、仪表伴热和小型加热设备的阻汽排水，使用范围很广。 膜盒式蒸汽疏水阀的主要动作元件是金属膜盒，内充一种气化温度比水的饱和温度低的液体。装置刚起动时，管道出现低温冷凝水，膜盒内的液体处于冷凝状态。阀门处于开启位置。当冷凝水温度渐渐升高，膜盒内充液开始蒸发，膜盒内压力上升，膜片带动阀心向关闭方向移动，在冷凝水达到饱和温度之前，疏水阀xx关闭，膜盒随蒸汽温度变化控制阀门开关，起到阻汽排水作用。有开阀温度低于饱和温度15℃和30℃两种膜盒供选择。

“ bellows steam trap ”是由提供的国际阀门新闻，译文仅供参考。另外，中国疏水阀网还提供相关产品搜索：、、、、等。

原文：
Heat Static-type bellows steam trap (steam pressure balance type) is the world's most commonly used advanced energy-saving trap. Bellows steam trap response was very sensitive work, there are high-temperature condensate valve before the water, no steam leakage, energy-saving effect is remarkable. Its advantages are: Automatic row of air, small size, not afraid of cold, can be installed at any position; easy to maintain, in the pipeline can check the repair and replacement parts; maximum back-pressure rate of ≤ 80%, film box strong, long service life. Charge applies to steam lines, steam with heat pipe network, instrument with a small heating equipment, heat and steam resistance drainage, the use of a wide range. Bellows steam trap of the main action components are metal film boxes, which filled a gasification temperature of the water saturation temperature lower than the liquid. Device just starting when the low-temperature condensed water pipe occurs, the membrane liquid in the condensate box state. Valve in the open position. When the condensate water temperature gradually increased, the membrane began to evaporate liquid-filled box, the membrane box pressure rise, driven diaphragm valve heart to move off in the condensate to saturation temperature before the trap is completely closed, the membrane box with the steam temperature change control valve switch, play a role in blocking the drainage steam. There are open valve temperature below saturation temperature of 15 ℃ and 30 ℃ two kinds of film boxes available.