ValvTechnologies V1 Series, Installation And Operations Maintenance Manual

Page: 14 / 20

Page 14
Pressure Seal Standoff
14) Place body with end cap end up. Carefully align pressure seal parallel with body face. Very
carefully place the end cap atop the body and pressure seal. All must be horizontal.
15) Check the body gap (pressure seal standoff). See Table 4. If the gap is out of tolerance, an over-
sized body may be used.
Pressure Seal
Stand-Off
Body Seal
End-Cap
Body
NOMINAL BALL BORE
(I.D.) – in. (mm)
STAND OFF – in. (mm)
MINIMUM MAXIMUM
5/8 (16) .023 (.584) .041 (1.0414)
1-1/16 (27) .041 (1.0414) .068 (1.727)
1-1/2 (38) .045 (1.143) .068 (1.727)
2-1/8 (54) .048 (1.219) .071 (1.803)
3-1/16 (78) .078(1.981) .105 (2.667)
4-1/16 (103) .095 (2.413) .125 (3.175)
5-1/8 (130) .120 (3.048) .145 (3.683)
6-1/16 (154) .145 (3.683) .178 (4.521)
8-1/16 (205) .180 (4.572) .210 (5.334)
10-1/16 (256) .230 (5.842) .260 (6.604)
12-1/8 (308) .275 (6.985) .310 (7.874)
15-1/4 (387) .305 (7.747) .345 (8.763)
17-1/4 (438) .330 (8.382) .370 (9.398)
19-1/4 (489) .350 (8.89) .390 (9.906)
21-1/4 (540) .380 (9.652) .430 (10.922)
TABLE 4
ASSEMBLY STAND OFF OF PRESSURE SEAL (without ball)
(PRESSURE SEAL VALVES ONLY )
Note: If standards are not in this range, then ValvTechnologies Engineering approval is required prior to as-
sembly.
NOTE: This measurement is only required on valves with a metal body seal.