3/4 909QT WATTS BACKFLOW PREVENTER 0387121
Series 909 Reduced Pressure Zone Assemblies
Series 909 Reduced Pressure Zone Assemblies are designed to
provide superior cross-connection control protection of the
potable water supply in accordance with national plumbing
codes and containment control for water authority requirements.
This series can be utilized in a variety of installations, including
health hazard cross-connections in plumbing systems or for
containment at the service line entrance. With its exclusive,
design incorporating the patented "air-in/water-out" principle it
provides maximum relief valve discharge during the emergency
conditions of combined backsiphonage and backpressure with
both checks fouled. Model 909QT, standardly furnished with full
port, resilient seated and bronze ball valve shutoffs. Sizes 3/4"
and 1" (20 and 25mm) shutoffs have tee handles.
Features
♦ Modular design
♦ Replaceable seats
♦ Compact for installation ease
♦ Horizontal or vertical (up or down) installation
♦ No special tools required for servicing
Keywords: WATTSR WAT 909QT 3/4 0387121 WATTS REGULATOR 098268024142 3/4 909QT Watts Reduced Pressure Zone Assy (0387121)
Category: [0] => PLUMBING => BACKFLOW PREVENTION => REDUCED PRESSURE ZONE
Kelly Legacy Part Number: 4692310
Kelly Catalog Sheet Backflow Protection
Series 909
Sizes 3/4 - 2
To prevent back-siphonage and backpressure of contaminated water into
the safe drinking water supply, when installed at each high hazard cross-
connection. Use Series 909 for backflow protection in cross-connection
control and containment at the service entrance. The 909 high capacity 909QT-S
relief incorporates the air-in/water-out principle and substantially
Note: The installation of a drain line
improves the relief valves discharge performance. The emergency
condition of combined back-siphonage and backpressure with both
recommended. When installing a drain
checks fouled can defeat the effectiveness of a standard RPZ backflow line and air gap is necessary.
preventer. Standardly furnished with NPT body connections and Backflow prevention for high hazard
quarter-turn, full port, resilient seated, bronze ball valve shut-offs No. cross-connection and containment installa-
909QT. Sizes 3/4 and 1 have Tee handle shut-offs. tions with continuous pressure.
Available Models
Prefix
C - with strainer clean and check, 3/4 and 1 only
Suffix
QT - with quarter-turn, full port, resilient seated ball valve
shut-offs
S - with bronze strainer
HW - with stainless steel check modules for hot water and harsh water
conditions
PC - with internal Polymer Coating
LF - without shut-off valves
Prefix
U - with integral body unions (3/4 and 1 only)
FAE - with flanged adapter ends (1 1/4, 1 1/2 and 2 only)
Features
Quarter-turn ball valve shut offs
Replaceable bronze seats
Designed pressure drop
Simple and economical service
High capacity relief protection against combined back-siphonage/
backpressure backflow
Modular design
No special tools required for servicing
Pressure-Temperature
Series 909 suitable for supply pressure up to 175 PSI and water temperatures
up to 140oF continuous and 180oF intermittent. Suffix HW stainless steel
Plumbing
check modules suitable for supply pressure up to 175 psi and water
temperature up to 210oF for harsh water conditions.
Connections
3/4 - 1 909QT has NPT female threaded body connections
1 1/4 - 2 909QTM1 has NPT male threaded body connections
909QT 909QTS
3/4 3/4
1 1
1 1/4 1 1/4
1 1/2 1 1/2 ----
2 2
Size Wgt. w/o
A B C D E F G H
(inches) (lbs.) strainer
3/4 21 1/4 17 1/4 7 5/16 4 4 3/4 11 1/4 6 3/4 3 7/8 15 7/8 14
1 22 1/4 17 3/16 7 5/16 4 4 3/4 13 7 3 7/8 17 1/2 15
1 1/4 25 5/8 20 5/8 10 3/8 5 6 5/8 14 7 1/2 5 1/4 42 3/4 40
1 1/2 27 3/16 21 3/4 10 3/8 5 6 5/8 15 7 1/2 5 1/4 44 40
2 30 3/4 23 5/8 10 3/8 5 6 5/8 16 7 3/4 5 1/4 47 3/8 40
www.kellysupply.com 1-800-KELLYSU (535-5978)
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