Critical Seat & Disc Dimensions - Farris Engineering 2700 Series Maintenance Manual

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Appendix A
Critical Seat and Disc Dimensions
Use these dimensions when lapping and/or refacing is required. Parts must be replaced if the minimum dimen-
sion is reached as indicated in the drawings.
ORIFICE SIZE
1/2 x 1
C 3/4 x 1
1 x 1
C 1/2 x 1
(High
3/4 x 1
Pressure) 1 x 1
1/2 x 1
D 3/4 x 1
1 x 1
D 1/2 x 1
(High
3/4 x 1
Pressure)
1 x 1
E 1 x 1 1/2
F 1 1/2 x 2
G 1 1/2 x 2 1/2
General Notes:
1. All dimensions are in inches.
2. Minimum dimension for body applies to both metal and O-ring seat designs.
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A B
0.344 0.985
0.344 0.985
0.344 0.985
0.344 0.985
0.363 0.821
0.734 0.950
0.738 0.910
A
DISC
B
BODY
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