SMC Networks KFG2-F Series Operation Manual page 12

5. Construction
1
2
Male connector
No. Description
(1) Union nut
(2) Half union body
(3) Elbow union body
(4) Swivel elbow body
(5) Stud
(6) O-ring
(7) G thread O-ring
Stainless steel
Metal exists in nature as ore (like oxide or sulfide). This means that oxide or sulfide is more stable than pure
metal. Accordingly, metallic material chemically oxidizes (metallic constituent becomes ion and melts out). It
corrodes in the natural environment.
Even though corrosion of metal easily occurs in an environment where oxidizing tendency is stronger, some kinds
of metal have a characteristic for which corrosion never happens if the level of oxidizing goes higher than a
specific point. In such case, it is called "metal in passive state".
Stainless steel has corrosion resistance because of a thin coat of passive state on its surface. However, there
does not exist stainless steel with absolute corrosion resistance; therefore, many types of stainless steel have
been developed for improved corrosion resistance performance.
3 1
Male elbow
Material
Stainless steel 316
Stainless steel 316
Stainless steel 316
Stainless steel 316
Stainless steel 316
FDA Compliant FKM
FDA Compliant FKM
4
6
5
Connection thread: R,NPT
Swivel elbow
Remarks
NSF H1 grease
NSF H1 grease
NSF H1 grease
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1 4
6
5
7
Connection thread: G
1