Dual-Balance Lever Float Steam Trap - GH4
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Detailed Introduction
Lever-ball float trap
Lever ball float type trap employs the buoyancy principle and the lever principles:to make the ball float ascend or descend by the change in the liquid level and then the ball float drives the lever to make the valve disc from or touch the valve seat to realize drainage and closed block vapor. The product adopts the automatic air exhaust to automatically eliminate non-condensing air.It is very precise with high operating and long service life.It can discharge whenever there is any water,and its minimum subcooled temperature is 0℃.The lever-ball float trap adopts two kinds of structure modes:A:Single valve seat-lever ball float;B:double balanced valve seat-lever ball float.
Single valve seat:it needs to overcome the operation on the valve seat by the medium pressure;the hole caliber of the valve seat cannot be too large and is applicable to such low displacement condition as mini-equipment,steam tracing pipeline and steam main pipe.The hole of the valve seat is designed beneath the water level of the condensate water to form water sealing to keep water apart from vapor,so as to prevent the leakage of the vapor.Though there is no condensate water that uses ball-type sealed lever to make the valve clack tightly adhesion to the valve seat,it can prevent the fresh vapor from leakage.Further,the product is free of the affect of the fluctuation of the condensate water's quantity and temperature.
The double balanced valve seat:this valve is designed to have two valve openings.The pressure of the medium act against the two valve seats equally in reverse direction,so the pressure on the valve seat is offset,the valve core assumes relatively low pressure when the valve is open,in this way the overlarge displacement is obtained.During the operating process,the ball float floats with the change in liquid level of the valve cavity to make the lever open or close the valve seat.The hole of the valve seat is designed beneath the water level of the condensate water to form water sealing to keep water apart from vapor,so as to prevent the leakage of the vapor.Further,the product is free of the affect caused by the fluctuation of pressure,temperature and condensate's flow.
Merits
1.To use new-style valve mechanism (new SCCV closing mode and Z-shaped structure) to boast excellent tightness and endurance.
2.To employ double balanced valve seat design,it has smaller volume and larger displacement and can exert its advantages when needing large displacement.
3.The single valve seat model can be installed horizontally and vertically,satisfying the requirements of steam pipeline with high backpressure and low displacement.
4.The built-in automatic air exhaust can prevent air blocking and steam locking;
5.As all components are installed on the valve cover,so they can be maintained and cleaned up simply and easily without being removed from pipe arrangement.
双平衡杠杆浮球式疏水阀/DOUBLE BALANCE LEVER-BALL FLOAT TRAP
技术参数/Technique parameter
壳体压力等级 Shell pressure grade | 负荷泄漏率 Load leakage | 使用介质 Used medium | 允许背压率 Permitted backpressure rate | 节能效果 Energy saving effect | 最大工作压差 Maximum operating pressure differential |
1.6、 2.5、 4.0、 10MPA | ≈0% | 蒸汽、凝结水 Steam、 Condensate water | ≥90% | 优秀/ 良好 Excellence/ good | 10MPA |
最小过冷度 Minimum subcooled temperature | 排水方式 Drainage method | 最高允许温度 Maximum allowable temperature | 排空气装置 Air exhaust system | 压力变化范围 Pressure change range | |
0℃ | 连续方式 Continue mode | 420℃ | 自动 Automatic | 适应 Adaption | |
主要零件材料/The materials of primary accessories
零部件名称 Part and component name | 材质Material |
阀体、阀盖 Valve body、Valve cover | 铸钢、不锈钢 Cast steel、Stainless steel |
浮球、杠杆 Float ball、Lever | 304不锈钢 304 Stainless steel |
双平衡阀座 Dual Balance valve seat | STL合金和不锈钢组合 Combination of STL alloy and Stainless steel |
自动排空气装置 Automatic air exhaust | 不锈钢、热敏元件 Stainless steel、Thermo-sensitive element |
过滤网 Filtrating screen | 不锈钢 Stainless steel |
外形尺寸和重量/Prime out-form dimensions and weigh
产品型号 Product model | 口径(DN) Calibre | L | L1 | H | H1 | H2/W | 重量(kg) weight | 使用压力 范围(MPa) Pressure change range | 公称压力 (MPa) Nominal pressure |
GH4 | 25-65 | 345 | 426 | 438 | 300 | 280 | 80 | 0.1-5.0 | 10.0 |
排水量/Capacity
Note
1.Please provide operating pressure and operating pressure difference,generating quantity of condensate water,operating temperature,connecting mode and standards in selecting product models.
2.The safely coefficient for condensate water load of dual balance valve seat is generally 1.5 to 2 times,and the safely coefficient for condensate water load of single valve seat is 3 times.
3.Please make sure the drain valve is installed properly,maintained regularly,cleaned up and operates under the normal condition,so as to extend its service life.
