Midland A-22075 Series - Page 36

P/N: A-22075/6, Rev. 1.1
Page 36 of 45
8.1.7 Tighten the locknut against the spring-adjusting nut to lock the setting.
Figure 8-7 Tighten Locknut
8.1.8 Retest the valve STD and determine how much pressure change occurred when the spring-
adjusting nut was rotated two (2) turns. Based upon this calculation, re-compress the valve spring
and alter the valve adjustment for the midpoint in the STD tolerance range.
STD Settings
VTP Settings
75 psig ± 3 psig
60 psig minimum
Table 8-1 STD and VTP Settings
8.1.9 If the test results are erratic, troubleshooting is more complex. Consult your supervising engineer
or a Midland representative.
8.1.10 When the test results are acceptable, tighten the top nut to the required torque in Table 1-2.
Tighten the Locknut