U.S. Divers Impulse

16 Impulse Second Stage Service & Repair Manual
© 1997 U.S. Divers Co., Inc.
Table 4
Torque Specifications
PART NUMBER DESCRIPTION / KEY NUMBER TORQUE
1005-35 LP Hose Female Fitting / 8 40 (±3) inch-lbs
1078-03 Hex Nut / 11 50 (±5) inch-lbs
Table 5
Test Bench Specifications
TEST CONDITION ACCEPTABLE RANGE
Leak test Inlet 2,500-3,000 (±100) psi
Knob turned full out CCW Slight leak
Knob turned in CW 1/2 - 3/4 turn None
Intermediate pressure Inlet 2,500-3,000 (±100) psi 140 (±5) psi
Intermediate pressure creep Inlet 2,500-3,000 (±100) psi 5 psi max between 5 to 15 seconds
after cycling regulator (purge)
Opening effort Inlet 2,500-3,000 (±100) psi,
intermediate pressure 140 (±5) psi
Knob turned in CW 1/2 - 3/4 turn +.6 to +1.0 inch H
2
0
(no leak)
Knob turned full in CW +2.0 to +2.7 inch H
2
0
Flow effort Intermediate pressure 140 (±5) psi +6 inches H
2
0 (maximum)
at 15 SCFM
Purge flow Intermediate pressure 140 (±5) psi 5.0 SCFM flow rate (minimum)