Product Overview

ES-F-601MAGDK
S P E C I F I C A T I O N S H E E T
Series 601-M
Air Gap Drains for Use With
MasterSeries® 860/860U
Size:
1
⁄2" - 2" (15 - 50mm)
The air gap drain is designed to be installed under the 860 / 860U
1
⁄ 2 " - 2"
(15 - 50mm) reduced pressure assemblies to catch moderate relief valve
discharge due to pressure fluctuations and/or minor check valve fouling.
Note: The gap drain is not designed to catch the maximum discharge pos-
sible from the relief valve. The installation of FEBCO air gap with the drain
line terminating above a floor drain will handle any normal discharge or nui-
sance spitting through the relief valve. However, floor drain size may need
to be designed to prevent water damage caused by a catastrophic failure
condition. Do not reduce the size of the drain line from the air gap fitting.
Features
• Reducesamountofwatersplashinginareaaroundreduced
pressure assemblies.
• Funnelsmoderatereliefvalvedischargeintodrain.
• Designedtofitstandard1"and2"pipe.
Specifications
The air gap drain shall be corrosion resistant material with stainless steel
mounting fasteners. The drain must be of a design that allows mounting by
attachment of the drain to the relief valve of a reduced pressure assembly.
The air gap shall provide connection for a minimum drain minimum drain
size equal to the valve size or greater. Smaller diameter drain pipe shall not
be allowed in order to minimize potential overflow water damage. Larger
diameter drains are acceptable by use of standard pipe connectors.
The air gap drain shall be FEBCO Series 601
1
⁄ 2 " - 2" (15 - 50mm).
Note: Consult local codes to insure drain installation meets all local
requirements.
Dimensions
Job Name
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601
Note: Dimensions are nominal. Allowances must be made for normal
manufacturing tolerances.
ValVe Size ‘a’ ‘B’ ‘C’
in. mm in. mm in. mm in.(NPT) mm
1
⁄2 15 8
5
⁄16 211 1 25 1 25
3
⁄4 20 8
5
⁄16 211 1 25 1 25
1 25 8
9
⁄16 217 1 25 1 25
1
1
⁄4 32 12
11
⁄16 322 1
3
⁄4 44 2 50
1
1
⁄2 40 12
11
⁄16 322 1
3
⁄4 44 2 50
2 50 12
11
⁄16 322 1
3
⁄4 44 2 50
a
B
C
Materials
Funnel: ASTM A48
Funnel Connectors: ASTM B26 Alloy 356
Coating: Vitralon polyurethane, black
Typical Installation
1. Before installation check local codes. This type of drain may not be
approved for use in some areas.
Caution: This drain is intended to catch moderate relief valve discharges
due to line pressure fluctuations and minor check valve fouling. Under
certain conditions relief valves can discharge water at rates greater than
the drain capacity.
2. If installed indoors, the assembly should be installed near a floor drain
sized to adequately handle discharge.
3. After installation of backflow assembly and piping, attach drain funnel to
relief as shown, using self tapping screws provided in kit to join drain
funnel halves together, making sure that the slots in the drain funnel are
located over tabs on relief valve port.
Note: Drain funnel was not deigned to, nor is it able to support drain-
pipe weight.
USA: 4381 N. Brawley • Ste. 102 • Fresno, CA • 93722 • Tel. [phone] • Fax: [phone] • www.FEBCOonline.com
Canada: 5435 North Service Rd. • Burlington, ONT. • L7L 5H7 • Tel. [phone] • Fax: [phone] • www.FEBCOonline.ca
ES-F-601MAGDK 0651 © 2009 FEBCO
A Watts Water Technologies Company
FEBCO product specifications in U.S. customary units and metric are approximate and are provided for
reference only. For precise measurements, please contact FEBCO Technical Service. FEBCO reserves the
right to change or modify product design, construction, specifications, or materials without prior notice
and without incurring any obligation to make such changes and modifications on FEBCO products pre-
viously or subsequently sold.