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STEP 13

When installing float, set angle similar to Figure 4 by adjusting 
F10-11 modulating float pilot linkage screw shown in Figure 5.

4          IOM-A-ACV-979-20_679-20   2115 

EDP# 1917116 

© 2021 Watts

IOM-A-ACV-979-20_679-20   2115 

EDP# 1917116 

© 2021 Watts         5

Linkage 

Adjustment 

Screw

Figure 5 

Modulating Float Control Pilot

Figure 4 

Modulating Float Control Pilot in Tank

Содержание AMES 679GD-20

Страница 1: ...etting the Float Control Valve 3 Maintenance Schedule 6 Trouble Shooting Guide 6 Valve Disassembly Instructions 8 ACV Schematic 11 Local building or plumbing codes may require modifica tions to the in...

Страница 2: ...outlet pressures A Position Indicator can be installed to provide visual indication of valve position and operation without disassembly 3 Install isolation valves upstream and downstream of the main v...

Страница 3: ...valve See Figure 1 Step 3 Pressure the line by opening the upstream isolation valve slowly Air is vented through the air bleed valve Tighten the fitting when liquid begins to vent See Figure 1 Step 4...

Страница 4: ...to normal operation STEP 5 Setting the Sustaining Control requires lowering the upstream pressure to the desired minimum sustained pressure STEP 6 Leave the downstream isolation valve fully open and...

Страница 5: ...Figure 4 by adjusting F10 11 modulating float pilot linkage screw shown in Figure 5 IOM A ACV 979 20_679 20 2115 EDP 1917116 2021 Watts 5 Linkage Adjustment Screw Figure 5 Modulating Float Control Pil...

Страница 6: ...specification sheets for approximate cover capacity A continuous flow of water from the open port indicates a damaged diaphragm or loose disc diaphragm assembly Disassemble valve and replace diaphragm...

Страница 7: ...1 2 turns open from full closed position Can be adjusted in field Main Valve will not close Closed isolation valves in pilot system Check isolation valves ensure open Diaphragm is damaged Conduct diap...

Страница 8: ...move cover nuts and washers 3 Remove the cover If cover is not free to be removed loosen it by tapping upward along its outside edge with a dull cold chisel pic tured above a Large valves may require...

Страница 9: ...brush or by using a Mineral Dissolving Solution Inspect parts for wear and replace if necessary 7 Inspect valve seat If seat is not damaged removal is not necessary Valve seats 6 and smaller are threa...

Страница 10: ...ts in a crossing pattern to ensure even distribution Test the Disc and Diaphragm Assembly for smooth travel by following the Freedom of Movement Test procedure in previous section 11 Test the integrit...

Страница 11: ...ess Steel 10 Diaphragm Washer ASTM A536 65 45 12 Epoxy Coated Ductile Iron 11 Diaphragm Buna N Nitrile 12 Disc Retainer ASTM A536 65 45 12 Epoxy Coated Ductile Iron 13 Seat Disc Buna N Nitrile 14 Spac...

Страница 12: ...resulting from labor charges delays vandalism negligence fouling caused by foreign material damage from adverse water conditions chemical or any other circumstances over which the Company has no cont...

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