22
OM131
Chapter 2
P1939-OM-131 R11
Fig 2.7 Single stage regulator
The function of the single stage regulator is to maintain a positive pressure inside the SLS System
while it is in its stand-by mode. Gas is supplied to the regulator from a connection on the Helmet
side-block. The regulator is of a diaphragm type (similar to the second stage of the two-stage
regulator).
The SLS System is designed to cope with diver upward and downward excursions at a controlled
rate not exceeding 22 msw / minute (75 fsw/ minute). The single stage regulator is designed to flow
sufficient gas at all operating depths to maintain 138 mbar (2 psi) over ambient pressure within the
SLS System.
The valve pin (Fig 2.7, Item 8) is held off the valve seat (Fig 2.7, Item 7) by the diaphragm (Fig 2.7,
Item 20) and the support plate (Fig 2.7, Item 4), under the action of the spring (Fig 2.7, Item 14). As
the pressure in the space to the right of the diaphragm increases the diaphragm and hence the
valve pin moves to the left sealing off the valve seat fully at the set outlet pressure.
The outlet pressure is adjusted by varying the spring (Fig 2.7, Item 14) tension by slackening the
locknut (Fig 2.7, Item 17) and adjusting the grub screw (Fig 2.7, Item 16) until the desired pressure
is reached.
2.3.7 Demand
regulator
Fig 2.8
shows a cross-section through the demand regulator. The SLS System’s overpressure valve
is also incorporated in the demand regulator body but is excluded from this drawing for clarity.
Содержание Divex SLS Mk IV
Страница 2: ...Intentionally Blank...
Страница 4: ...ii OM131 Approval Sheet P1939 OM 131 R11 Intentionally Blank...
Страница 6: ...iv OM131 Preface P1939 OM 131 R11 Intentionally Blank...
Страница 8: ...vi OM131 List of Abbreviations P1939 OM 131 R11 Intentionally Blank...
Страница 10: ...viii OM131 Warnings P1939 OM 131 R11 Intentionally Blank...
Страница 12: ...x OM131 Table of Contents P1939 OM 131 R11 Intentionally Blank...
Страница 15: ...OM131 3 P1939 OM 131 R11 Chapter 1 Fig 1 1 SLS System Mk IV...
Страница 16: ...4 OM131 Chapter 1 P1939 OM 131 R11 Fig 1 2 SLS system layout...
Страница 32: ...20 OM131 Chapter 2 P1939 OM 131 R11 Fig 2 4 Two stage regulator Fig 2 5 Spool valve...
Страница 42: ...30 OM131 Chapter 2 P1939 OM 131 R11 Intentionally Blank...
Страница 53: ...OM131 41 P1939 OM 131 R11 Chapter 3 Fig 3 3 Hose Lanyards...
Страница 54: ...42 OM131 Chapter 3 P1939 OM 131 R11 Fig 3 4 SLS System Mk IV Rear View...
Страница 55: ...OM131 43 P1939 OM 131 R11 Chapter 3 Fig 3 5 SLS System Mk IV Front View...
Страница 64: ...52 OM131 Chapter 3 P1939 OM 131 R11 Intentionally Blank...
Страница 82: ...70 OM131 Chapter 4 P1939 OM 131 R11 Fig 4 7 Annual Maintenance Two Stage Regulator...
Страница 86: ...74 OM131 Chapter 4 P1939 OM 131 R11 Fig 4 8 Annual Maintenance Single Stage Regulator...
Страница 109: ...OM131 97 P1939 OM 131 R11 Chapter 5 Fig 5 2 Backpack Assembly Drawing P1939229S1...
Страница 111: ...OM131 99 P1939 OM 131 R11 Chapter 5 Fig 5 4 Scrubber Housing Assembly Drawing P1939131S1...
Страница 113: ...OM131 101 P1939 OM 131 R11 Chapter 5 Fig 5 6 SLS System Mk IV Inhale Exhale Duct Assembly Drawing P1939 DG 142...
Страница 115: ...OM131 103 P1939 OM 131 R11 Chapter 5 Fig 5 7 SLS System Mk IV Counterlung Duct Assembly Drawing P1939 DG 159...
Страница 118: ...106 OM131 Chapter 5 P1939 OM 131 R11 Fig 5 9 SLS System Mk IV Gas Schematic Drawing P193940S1...
Страница 123: ...OM131 111 P1939 OM 131 R11 Chapter 5 Fig 5 14 SLS System Mk IV Bottle Assembly...
Страница 125: ...OM131 113 P1939 OM 131 R11 Chapter 5 Fig 5 15 SLS System Rotowink General Assembly Drawing P1939 DG 59...
Страница 127: ...OM131 115 P1939 OM 131 R11 Chapter 5 Fig 5 16 SLS System Mk IV Hot Water System Drawing P1939156S1...
Страница 129: ...OM131 117 P1939 OM 131 R11 Chapter 5 Fig 5 18 Shroud Hot Water Hose Assembly Drawing P1939 DG 83282...
Страница 130: ...118 OM131 Chapter 5 P1939 OM 131 R11 Fig 5 19 SLS System Hot Water Shroud Assembly Drawing B82840...
Страница 132: ...120 OM131 Chapter 5 P1939 OM 131 R11 Fig 5 20 Refillable Canister Assembly Drawing P1939 DG 035...
Страница 133: ...OM131 121 P1939 OM 131 R11 Chapter 5 Fig 5 21 SLS System Mk IV Harness Assembly Drawing P1939137S1...
Страница 134: ...122 OM131 Chapter 5 P1939 OM 131 R11 Fig 5 22 SLS System Mk IV Actuation Cable Assembly Drawing P1939 DG 115...
Страница 135: ...OM131 123 P1939 OM 131 R11 Chapter 5 Fig 5 23 SLS System Mk IV Counterlung Assembly Drawing P1939 DG 56...