JFD Divex SLS Mk IV, Operation And Maintenance Manual

Page: 87 / 136

OM131 75
P1939-OM-131 R11 Chapter 4
4.3.4.4 Strip down and service of demand regulator
1. Ensure that the gas cylinders are empty by activating the SLS System and pressing down on
the demand valve diaphragm with the demand valve activating tool (Divex Part No. M2922)
from the Tool and Test Kit.
2. Remove the lid (Fig 5.12, Item 2, page 109) and diaphragm (Fig 5.12, Item 15).
3. Unscrew the cap (Fig 5.12, Item 11).
4. Slacken the demand valve adjustment screw (Fig 5.12, Item 10).
5. Unscrew the regulator seat retainer (Fig 5.12, Item 6) and withdraw.
6. Using pliers pull the valve stem (Fig 5.12, Item 4) to remove the valve seat (Fig 5.12, Item 3).
7. Remove the spring (Fig 5.12, Item 5) and O-ring (Fig 5.12, Item 14).
Item Descriptions Part Nos
1 Single Stage Regulator Body D2284
2 Regulator End Cap D2285
3 Diaphragm Support Plate D22070
4 Spring Support Plate D2281
5 Spring Adjustment Plate D2212B
6 Valve Seat Retainer D2286
7 Valve Seat RK221
8 Valve Pin D22020
9 Banjo Fitting Ref only
10 Banjo Mounting Bolt D26940
11 Slip Ring D2282
12 Sleeve D32860
13 O-ring RN015-7
14 Compression Spring RK446
15 Compression Spring HK021
16 Cone Pointed Grub Screw FB080
17 Locknut FN015
18 Gasket MC124
19 Plug NP103
20 Diaphragm D22830
21 Mesh D32870
22 Inlet Filter Fitting (inc. Filter - FE012) DM180