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Installation, Operation and
Maintenance Manual
Deringer
™
Reduced Pressure Zone/
Reduced Pressure Detector Assemblies
Size: 40G/50G: 6" & 8"
40GX/50GX: 4" & 6"
WA R NI N G
!
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
!
You are required to consult the local building and plumbing
codes prior to installation. If the information in this manual
is not consistent with local building or plumbing codes,
the local codes should be followed. Inquire with governing
authorities for additional local requirements.
40G/40GX/50G/50GX
IOM-A-Deringer 40G/40GX/50G/50GX_6-8
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Summary of Contents for Watts AMES Deringer 40G
- Page 1 IOM-A-Deringer 40G/40GX/50G/50GX_6-8 Installation, Operation and Maintenance Manual Deringer 40G/40GX/50G/50GX ™ Reduced Pressure Zone/ Reduced Pressure Detector Assemblies Size: 40G/50G: 6" & 8" 40GX/50GX: 4" & 6” WA R NI N G 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 " Ratchet Wrench (x2) " Ratchet Wrench Adjustable Wrench Deringer Test Cock Wrench Slip-joint Pliers Toothbrush " Socket Wood Block 2" x 4" x 5" Wood Block 1" x 2" x 16" " Socket Ratchet 2005 EDP#2916009 © 2020 Watts IOM-A-Deringer 40G/40GX/50G/50GX_6-8...
- Page 3 1. 6. Using the Deringer test cock Main Test Cock Bypass Test Cock wrench or a small adjustable wrench open main test cock number 2. Closed Open Closed Open 2005 EDP#2916009 © 2020 Watts IOM-A-Deringer 40G/40GX/50G/50GX_6-8...
- Page 4 (C), gently push the second check module in the upstream direction until the second check module can easily be removed from the access port by hand. FLOW 2005 EDP#2916009 © 2020 Watts IOM-A-Deringer 40G/40GX/50G/50GX_6-8...
- Page 5 4. Gently remove bypass meter (G) from line. It is OK if the bypass fittings move slightly during the removal process. 5. Reverse order of above instructions to reinstall bypass meter. Remember install gaskets (F) before threading meter coupling nuts into place. FLOW 2005 EDP#2916009 © 2020 Watts IOM-A-Deringer 40G/40GX/50G/50GX_6-8...
- Page 6 Orient seat protrusions as shown the seat. In order to maintain the performance of the valve pay attention to the proper orientation of the check module. Tower Bosses Spring Arms 2005 EDP#2916009 © 2020 Watts IOM-A-Deringer 40G/40GX/50G/50GX_6-8...
- Page 7 The second check module must be fully seated to ensure retainer screws do not bind against check seat. Binding retainer screws against check seat will result in permanent damage to second check modules. Binding Not Binding FLOW 2005 EDP#2916009 © 2020 Watts IOM-A-Deringer 40G/40GX/50G/50GX_6-8...
- Page 8 3. To access the relief valve remove the relief valve cover using " wrenches to remove cover bolts (D). 4. Remove the relief valve diaphragm (E) and check the diaphragm for tears, holes or debris (F). 2005 EDP#2916009 © 2020 Watts IOM-A-Deringer 40G/40GX/50G/50GX_6-8...
- Page 9 2. Place the relief valve spring (C) back onto the relief valve assembly (A) and slide the valve assembly back into the relief valve body (D). Make sure the piston assembly lines up to penetrate hole (E) in top side of relief valve. 2005 EDP#2916009 © 2020 Watts IOM-A-Deringer 40G/40GX/50G/50GX_6-8...
- Page 10 5. From the OUTSIDE of the valve the dimple (C) must face directly UPSTREAM toward the #1 shutoff valve. If the dimple (C) of the pitot Upstream tube is NOT in the oriented UPSTREAM the relief valve WILL LEAK OR DUMP during flow conditions FLOW 2005 EDP#2916009 © 2020 Watts IOM-A-Deringer 40G/40GX/50G/50GX_6-8...
- Page 11 " socket wrench (G) to tighten the 4 center cover bolts (D) alternating from one side of the valve to the other. Then tighten the four corner bolts alternating from one side of the valve to the other. 2005 EDP#2916009 © 2020 Watts IOM-A-Deringer 40G/40GX/50G/50GX_6-8...
- Page 12 4. Double check to be certain of the following: • All cover bolts are tightened (E) • Deringer 50G/50GX: Bypass check valve cover is tightened (F) • Deringer 50G/50GX: Bypass meter coupling nuts are tightened (G) FLOW Closed Open Closed Open 2005 EDP#2916009 © 2020 Watts IOM-A-Deringer 40G/40GX/50G/50GX_6-8...
- Page 13 2005 EDP#2916009 © 2020 Watts IOM-A-Deringer 40G/40GX/50G/50GX_6-8...
- Page 14 USA: Backflow T: (978) 689-6066 • F: (978) 975-8350 • AmesFireWater.com USA: Control Valves T: (713) 943-0688 • F: (713) 944-9445 • AmesFireWater.com Canada: T: (905) 332-4090 • F: (905) 332-7068 • AmesFireWater.ca Latin America: T: (55) 4122-0138 • AmesFireWater.com 2005 EDP#2916009 © 2020 Watts IOM-A-Deringer 40G/40GX/50G/50GX_6-8...
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