Watts 800M4QT - Manual (Page 2)

Materials
Springs Stainless Steel
Bonnet Celcon
Vent Disc Silicone Rubber
Disc Holder Float Polypropylene
Check Valve Disc Silicone Rubber
Check Valve Seat Noryl Plastic
Body
Bronze
Pressure - Temperature
Temperature Range: 33°F to 140° (0.5°C to 60°C)
Maximum Working Pressure: 150psi (10.3 bar)
Installations
This valve is designed for installation in a continuous pressure
potable water supply system 12" above the highest point of
the downstream piping. The valve must be installed with the
supply connected to the bottom and in a vertical position. Allow
adequate space for periodic inspection, servicing or testing.
The valve should not be installed in an area where freezing or
spillage will cause damage. Adequate drainage/freeze protec-
tion must be provided in cold weather applications. 1.5psi (10
kPa) must be exerted against the float spring to seal the float
and air inlet. Do not undersize supply and discharge piping.
Vacuum breakers are not designed, tested or
approved to protect against backpressure backflow or water ham-
mer shock. For protection against backpressure backflow, install
Watts 909/009 Reduced Pressure Zone Backflow Preventer. For
Protection against water hammer shock install a Watts Series 15
Water Hammer Arrestor utilizing good plumbing practice.
Dimensions – Weights
800M4QT
Standards
ANSI, USC
Approvals
Approved by the foundation for Cross-Connection Control and
Hydraulic Research at the University of Southern California. ( 1 ⁄
2
"
– 2" (15 - 50mm) 800M4QT only)
CSA ( 1 ⁄
2
" – 2" (15 - 50mm) 800M4QT only).
**QC models have quick-connect adapters which attach sepa-
rately to the approved 800M4QT
D
C
E
A
G
B
C
D
A
G
B
moDEl SizE (DN) DimENSioNS WEiGht
A B C D E G
in. mm in. mm in. mm in. mm in. mm in. mm in. mm lbs. kg.
800M4QT 1 ⁄
2
15 6 1 ⁄
8
156 6 1 ⁄
4
159 2 9 ⁄
16
65 3 11 ⁄
16
94 3 7 ⁄
8
98 2 1 ⁄
4
57 4 1.8
800M4QT 3 ⁄
4
20 6 1 ⁄
2
165 6 1 ⁄
2
165 2 9 ⁄
16
65 3 15 ⁄
16
100 4 1 ⁄
8
105 2 1 ⁄
4
57 4 1.8
800M4QT 1 25 7 1 ⁄
2
191 7 1 ⁄
2
191 2 3 ⁄
4
70 4 3 ⁄
4
121 4 7 ⁄
8
124 3 7 ⁄
16
87 6 2.7
800M4QT 1 1 ⁄
4
32 8 7 ⁄
8
225 9 229 3 1 ⁄
4
83 5 3 ⁄
4
146 6 1 ⁄
8
156 5 127 11 5.0
800M4QT 1 1 ⁄
2
40 9 1 ⁄
4
235 9 1 ⁄
2
241 3 1 ⁄
4
83 6 1 ⁄
4
159 6 3 ⁄
8
162 5 127 14 6.3
800M4QT 2 50 10 5 ⁄
8
270 9 5 ⁄
8
245 3 1 ⁄
4
83 6 3 ⁄
8
162 7 178 5 127 19 8.6
U800M4QT 3 ⁄
4
20 6 3 ⁄
8
163 7 9 ⁄
16
192 2 1 ⁄
8
55 5 7 ⁄
16
138 – – 2 1 ⁄
4
57 4 1.8
U800M4QT 1 25 8 5 ⁄
16
211 9 229 2 13 ⁄
16
71 6 3 ⁄
16
158 – – 3 7 ⁄
16
87 6 2.7
800M4QT-QC 1 ⁄
2
15 7 7 ⁄
8
200 8 203 2 13 ⁄
16
71 5 7 ⁄
16
138 5 5 ⁄
8
144 3 7 ⁄
16
87 4.5 2.0
800M4QT-QC 3 ⁄
4
20 8 1 ⁄
2
216 8 1 ⁄
2
216 2 13 ⁄
16
71 5 11 ⁄
16
144 6 1 ⁄
8
156 3 7 ⁄
16
87 4.7 2.1
800M4QT-QC 1 25 9 1 ⁄
2
241 9 1 ⁄
2
241 2 13 ⁄
16
71 6 3 ⁄
4
171 6 7 ⁄
8
175 3 7 ⁄
16
87 6.6 3.0
1020
U800M4QT
NOTICE
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**
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