雙金屬片式疏水閥的熱敏元件為兩種不同膨脹率的金屬通過特殊工藝壓鑄一起的雙金屬片，雙層金屬片在受熱后膨脹，由于不同的膨脹率使其產(chǎn)生的彎曲。利用這種特性制作成疏水閥的熱敏元件起到開關(guān)作用。雙金屬片式疏水閥分為不可在線調(diào)節(jié)（BK，CS17H和CS47）和可在線調(diào)節(jié)（可調(diào)雙金屬片式TB）。
The thermo-sensitive element of bimetallic trap is a bimetallic element cast through a special process by two metals of different expansion ratio.When the bimetallic element expands after heated,different expansion ratio results in bending.The thermo-sensitive element produced on the basis of this quality can act as a switch.Bimetallic Traps are divided into adjustable offline (BK,CS17H and CS47) and online (adjustable bimetallic element TB). 
優(yōu)點(diǎn)：
1、結(jié)構(gòu)簡單，容易安裝和維修，抗水擊，排空性能。
2、利用高溫凝結(jié)水形成水封，沒有新鮮蒸汽泄露（零泄露）。
3、動作靈敏，無噪聲。
4、抗水擊，對壓力突然變化沒有影響。
5、可用于過熱蒸汽系統(tǒng)。
6、可以使用高壓高溫的蒸汽管線。
7、具有良好的排空氣性能，不怕凍。
Merits
1.Simple structure,easy to install and maintain,resistant to water hammer and superb emptying performance.
2.Water seal by high-temperature condensate,no leakage of fresh steam (zero leakage).
3.Flexible and noiseless.
4.Water hammer resistance with no effect from abrupt pressure changes.
5.Adoptable for overheat steam system.
6.Adoptable for high-pressure and high-temperature steam pipes.

7.Good air discharge quality with resistance to coldness.

雙金屬片式疏水閥/BIMETALLIC TRAP

技術(shù)參數(shù)/Technique parameter

殼體壓力等級 Shell pressure grade	負(fù)荷泄漏率 Load leakage	使用介質(zhì) Used medium	允許背壓率 Permitted backpressure rate	節(jié)能效果 Energy saving effect	適用過熱蒸汽 Use superheated steam
1.6、2.5、4.0、6.4、10MPA	0%	蒸汽、凝結(jié)水 Steam、Condensate water	≥75%	優(yōu)秀 Excellence	適應(yīng)  Adaption
工作壓差 Maximum operating pressure differential	抗凍性 Freezing resistance	排水方式 Drainage method	允許溫度 Maximum allowable temperature	排空氣裝置 Air exhaust system	抗水擊 Resis
10.0MPA	優(yōu)秀 Excellence	連續(xù)方式 Continue mode	420~550℃	自動  Automatic	適應(yīng) Adaption

 

外形尺寸和重量/Prime out-form dimensions and weigh

產(chǎn)品型號 Product model	口徑(DN) Calibre	L法蘭 Flange	L螺紋/焊接 Thread/welding	H1	H2	W	重量(kg) weight	使用壓力范圍(MPa) Pressure change range	公稱壓力(MPa) Nominal pressure
BK284 BK286	15~20 25	210 230	130	130	25	160	11/16	0.1-10.0	10.0

主要零件材料/The materials of primary accessories

零部件名稱 Part and component name	材質(zhì)Material
閥體、閥蓋        Valve body、Valve cover	碳鋼、合金鋼               Carbon steel、Alloy steel
雙金屬片           Bimetal	不銹鋼金屬                 Stainless steel
閥座                 Valve seat	不銹鋼                   Stainless steel
閥桿                 Valve rod	不銹鋼                   Stainless steel
過濾網(wǎng)              Filtrating screen	不銹鋼                   Stainless steel

注解
1、選型時請?zhí)峁┕ぷ鲏毫?、工作壓差、凝結(jié)水發(fā)生量、工作溫度、連接方式及標(biāo)準(zhǔn)。
2、凝結(jié)水負(fù)荷的安全系數(shù)一般為2～3倍。
3、正確安裝、定期保養(yǎng)清除閥內(nèi)污物，保證疏水閥正常工作和延長使用壽命。
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 load of condensate Water's safety coefficient reaches 2 to 3 times in general.
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.