保温阀门有良好的保温保冷特性，且阀门的通径与管径一致，同时又能有效降低管路中介质热量损失。主要用于石油、化工、冶金、制药、食品等各类系统中，以输送常温下会凝固的高粘度介质,保温阀对工业生产中大量的阀门采取良好的保温措施，不仅能获得良好的节能效果，而且也可以提高阀门的安全可靠性，延长阀门使用寿命。主要部件材质  产品型号阀体、阀盖阀 瓣填 料BJ45W-25P、BJ45W-40P、BJ45W-64PZG1Cr18Ni9Ti1Cr18Ni9TiPTFE聚四乙稀BJ45W-25P/R、BJ45W-40P、BJ45W-64PZG1Cr18Ni12Mo2Ti1Cr18Ni12Mo2TiPTFE聚四乙稀  主要性能规范  型号公称压力PN(Mpa)试验压力适用温度适用介质保温套压力shellsealBJ45W-25P2.53.752.75≤200Acetic urea1≤1.3BJ45W-40P4.06.04.4BJ45W-64P6.49.06.6Acetic ureaBJ45W-25P2.53.752.75BJ45W-40P4.06.04.4BJ45W-64P6.49.06.6  主要尺寸表  公称压力公称通径尺 寸LDD1D2D3B1FobD63-GZ-ΦdHH1Do2.54.0151701057555358416513/84-Φ142502621202019011511565428416583/84-Φ142923081402521013513578508418663/84-Φ183403751603223014514585608418763/84-Φ183383751602.54.040260160125100728420651/24-Φ1836038616050300180145120948422881/28-Φ184104502406534019516013010584221101/28-Φ1844048524080380230190160128114.5241211/28-Φ23540600280100430270220188154114.5281501/28-Φ25560625320125 300250218182114.5301761/28-Φ256257373601505503302802482114.5322041/212-Φ257207903606.4252351601258508422 1/24-Φ183753751603226016512588608424 1/24-Φ2338338316050300200160130  4261101/28-Φ2345045024065340210170140  4301211/28-Φ235105102401004302702201881541544.536 1/28-Φ25670670400100415300250218  4.532 1/28-Φ2567产品性能规范BJ45W保温截止阀适用于化工、化肥行业的管路上，夹套内涵入蒸汽能防止介质结晶。型号公称压力PN(MPa)试验压力适用温度适用介质保温套压力(MPa)壳体密封BJ45W-25P2.53.752.75≤200硝酸类≤1.0BJ45W-40P4.06.04.4BJ45W-64P6.49.06.6BJ45W-25R2.53.752.75硝酸类BJ45W-40R4.03.04.4BJ45W-64R6.49.06.6BJ45W保温截止阀I型主要外形尺寸和连接尺寸(II型法兰大一级)公称压力PN公称通径DN尺寸LDD1D2D3B1foBD63-GZ-ΦdHH1Do2.54.0151701057555358416513/84-Φ14250262120201901158565428416583/84-Φ142923081402521013510078508418663/84-Φ183403751603223014511085608418761/24-Φ1833837516040260160125100728420881/24-Φ18360386160503001801451209484221101/28-Φ184104502406534019516013510584221211/28-Φ1844048524080380230190160128114.5241501/28-Φ23540600280100430270220188154114.5281761/28-Φ25560625320125490300250218182114.5302041/28-Φ25625737360150550330280248212114.5322041/212-Φ257207903600670400