PRESSURE & NUMBER OF V-RINGS


Pressure
MPa { kgf/cm(2) }

Number of V-Rings® *b

Adapter Material

Spacer Material

VGH

VNV, VNF

Rubber-proofed
Hard Cotton

Bronze

Aluminum
Bronze

Bronze

Aluminum
Bronze
Under 3.9 { 40 } incl.

3

3

O

O

O

O

O
Over 3.9 { 40 } to 29.4 { 300 } incl.

4

4

O

O

O

O

O
Over 29.4 { 300 } to 58.8 { 600 } incl.


5

?

?

OO

?

OO
Over 58.8 { 600 }


6

X

X

OO

X

OO

OO: Most suitable
O: Suitable
?: Depends on service condition
X: Unsuitable

When the pressure goes over 58.8 Mpa { 600 kgf/cm(2) }, it is not effective to increase the number of V-Rings® *b. Use of Spacer Rings is recommended instead.