一、产品特点：夹套保温直流式截止阀采用直流式Y型结构，启闭件是塞形的阀瓣，密封面呈平面或锥面，阀瓣沿流体的中心线作直线运动。阀杆的运动形式，有升降杆式（阀杆升降，手轮不升降），也有升降旋转杆式（手轮与阀杆一起旋转升降，螺母设在阀体上）。保温截止阀只适用于全开和全关，不允许作调节和节流。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。二、主要零部件材质：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三、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≤350硝酸类≤1.0BJ45W-40P4.06.04.4BJ45W-64P6.49.06.6醋酸类尿素类BJ45W-25P2.53.752.75BJ45W-40P4.06.04.4BJ45W-64P6.49.06.6四、主要外形连接尺寸：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-Φ25560625320125300250218182114.5301761/28-Φ256257373601505503302802482114.5322041/212-Φ257207903606.42523516012585084221/24-Φ1837537516032260165125886084241/24-Φ23383383160503002001601304261101/28-Φ23450450240653402101701404301211/28-Φ235105102401004302702201881541544.5361/28-Φ256706704001004153002502184.5321/28-Φ25670670400)