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Installation, Operation and Maintenance
Model 972GD-19 / 672GD-19
On-Off Float Control Valve (6" and Larger)
Sizes: 6" to 24"
WARNING
!
Read this Manual BEFORE using this equipment.
Failure to read and follow all safety and use information
can result in death, serious personal injury, property
damage, or damage to the equipment.
Keep this Manual for future reference.
WARNING
!
Local building or plumbing codes may require modifica-
tions to the information provided. You are required to
consult the local building and plumbing codes prior
to installation. If the information provided here is not
consistent with local building or plumbing codes, the
local codes should be followed. This product must be
installed by a licensed contractor in accordance with
local codes and ordinances.
WARNING
!
Need for Periodic Inspection/Maintenance: This product
must be tested periodically in compliance with local codes,
but at least once per year or more as service conditions
warrant . All products must be retested once maintenance
has been performed . Corrosive water conditions and/or
unauthorized adjustments or repair could render the product
ineffective for the service intended . Regular checking and
cleaning of the product's internal and external components
helps assure maximum life and proper product function .
NOTICE
For Australia and New Zealand: Pipeline strainers should be
installed between the upstream shutoff valve and the inlet of
the backflow preventer.
It's important that this device be tested periodically in compli-
ance with local codes, but at least once per year or more as
service conditions warrant. If installed on a fire sprinkler system,
all mechanical checks, such as alarm checks and backflow
preventers, should be flow tested and inspected internally in
accordance with NFPA 13 and NFPA 25.
Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Setting the Float Control Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Trouble Shooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Valve Disassembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . 8
ACV Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
IOM-A-ACV-972-19_672-19
Page
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Summary of Contents for AMES 972GD-19
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Page 1: Table Of Contents
IOM-A-ACV-972-19_672-19 Installation, Operation and Maintenance Model 972GD-19 / 672GD-19 On-Off Float Control Valve (6" and Larger) Sizes: 6" to 24" WARNING Read this Manual BEFORE using this equipment. Failure to read and follow all safety and use information can result in death, serious personal injury, property damage, or damage to the equipment. -
Page 2: Installation
972GD-19 (Globe) On-Off Float Control Valve (6" and Larger) Standard Components 1 – Main Valve (905GD – Single Chamber) 2 – On-Off Float Control 3A – High Level Adjustment Stop 3B – Low Level Adjustment Stop 4 – Model 22-1 Accelerator Control 5 –... -
Page 3: Setting The Float Control Valve
Valve Servicing Dimensions FLOW FLOW FLOW FLOW The following tables detail the recommended minimum valve servicing dimensions. Globe Size (in) 1 1/4 1 1/2 21/2 A (in) B (in) Angle Size (in) 1 1/4 1 1/2 2 1/2 C (in) D (in) Setting the Float Control Valve Opening and Closing Speed –... - Page 4 STEP 3 Manually operate the float linkage mechanism, allowing for the main valve to respond to the pilot. Lift float linkage to stop, ensure valve closes. STEP 4 Upper Stop Adjust Upper stop if main valve action allows the tank level to be higher than desired.
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Page 5: Maintenance Schedule
Automatic Control Valve Maintenance Schedule To ensure peak performance and longevity of your automatic • Annual Maintenance control valve, Watts/Ames recommends following the below – Conduct monthly & quarterly inspections. standard maintenance schedule. – Inspect & clean all strainers. • Monthly Maintenance –... - Page 6 Troubleshooting Guide Issue Possible Cause Corrective Action Notes Main Valve will not Closed isolation valves in pilot system. Check isolation valves, ensure open open. Insufficient supply pressure. Check upstream pressure. Depending on water source, supply pressure may not be controlled by valve operator.
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Page 7: Valve Disassembly Instructions
Valve Disassembly Instructions Before undertaking valve disassembly, it is recommended to gather the following tools to aid you during the process: • Small & large adjustable wrenches • Screwdriver set • Machinist fine metal file • Fine wire brush • Bench vise •... - Page 8 6. After removing the Stem Nut, the remainder of the Disc & Diaphragm Assembly should disassemble easily. Polish stem guide surfaces with fine emery cloth to remove any mineral deposits and inspect for excessive wear. Remove any mineral build-up from other components with wire brush or by using a Mineral Dissolving Solution.
- Page 9 8. Replace Seat Disc, Diaphragm and Spacer Washers provided in Main Valve repair kit (refer to Table 2 or 3 for correct repair kit part number). Re-assemble in the reverse order of disassembly. Table 2: Full Port Valve (905GD/905AD) Repair Kits Size (in) 1 1/4 1 1/2...
- Page 10 ACV Assembly Diagram – Series 972GD-19 (6 " and Larger) NOTICE Installation: If unit is installed in any orientation other than horizontal (cover up) OR extreme space constraints exist, consult customer service prior to or at the time of order.
- Page 11 NOTES IOM-A-ACV-972-19_672-19 2115 EDP# 1917110 © 2021 Watts...
- Page 12 Limited Warranty: Ames Fire & Waterworks (the “Company”) warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date of original shipment. In the event of such defects within the warranty period, the Company will, at its option, replace or recondition the product without charge.
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