Flange Type (ISO)

KF NW16

KF NW25 

KF NW40 

KF NW50 

Operation Type

Manual

 Fluid​

Inactive gas under vacuum​

Operating temperature(℃)​

 5 to 60 (High Temperature type 5 to 100)​

 Operating pressure (Pa) (abs)​

1 x 10 -9 ~ up to atmospheric pressure​

Leakage (Pa·m3/s)

 Internal​

1.3×10-10 at ambient temperature, excluding gas permeation (Standard material: FKM) ​

 External​

1.3×10-11 at ambient temperature, excluding gas permeation (Standard material: FKM) ​ 

Principle material​

Body : STS304, Bellows : STS316L, O-ring : FKM ​

Surface treatment​

EP & Anodizing 

Length (mm)​

 A=52 B=100

 A=65 B=130

 A=80 B=175

 Part No.

Angle type

Bellows Seal 

 550031

550032 

550033 

550034 

O-Ring Stem Seal 

 550131

550132 

550133 

550134 

 Part No.

In-Line Type

Bellows Seal ​ 

 560031

560032 

560033 

560034 

O-Ring Stem Seal ​

 560131

560132 

560133 

560134