零件名称Part name

阀杆、阀盖Stem,Bonnet

阀杆、阀瓣Stem,Disc

填料Packing

J21W-16P

铬镍不锈钢
Cr.Ni Stainless steel

铬镍不锈钢
Cr.Ni Stainless steel

聚四氟乙稀、柔性石墨PTEF,Soft graphite

J21W-40、J23W-160

优质碳钢
High grade carbon steel

铬不锈钢
Cr. Stainless steel

型号
Type

公称压力（MPa）Nominal pressure

试验压力PS（MPa）
Test pressure

工作压力（MPa）Working pressuer

工作温度（℃）Working temperature

适用介质Applicable mediun

壳体Shell

密封（液）Seal

密封（气）Seal

J21W-16

1.6

2.4

1.76

0.6

1.6

P≤200℃

液化石油气水、油品等Petroleun gas Water,Oil etc.

J21W-40P

4.0

6.0

4.4

0.6

4.0

J21W-160

16.0

17.6

17.6

0.6

16.0

C≤425℃

J21W-320P

32.0

48.0

35.2

0.6

32.0