TFP980
Page 3 of 6
ual (fl owing) pressure available to the
fi re sprinkler system.
For operation of the Model RSV-1 Resi-
dential Shut-Off Valve, you need only
design the fi re sprinkler system from
the water supply main to the most
hydraulically remote sprinkler. Domes-
tic fl ow does not require consideration.
As long as the single sprinkler fl ow is
equal to or greater than 12.5 GPM (47,3
LPM) for the 1 Inch Valve or 8 GPM
(30,5 LPM) for the 2 Inch Valve when
the supply pressure at the main is at
its minimum expected value, the Model
RSV-1 Valve automatically diverts the
domestic fl ow.
After the Piston Assembly has moved
to the full up position, only a small
amount of water is permitted to trickle
through the Internal By-Pass Restric-
tion to the Domestic Port (Ref. Figures
4 and 5). The trickle fl ow through the
Internal By-Pass Restriction permits
the Model RSV-1 Valve to reset auto-
matically after a sprinkler operation or
test without draining the fi re sprinkler
system.
When the Domestic Control Valve is
closed, the Internal By-Pass Restriction
allows the Supply and Domestic Port
pressures to equalize and the Piston
Assembly to move back down to the
standby position.
When using the 1 inch RSV-1, the
maximum fl ow rate through the Internal
By-Pass Restriction, when the Model
RSV-1 Valve is in the operated position,
is no greater than .25 GPM (0,9 LPM)
for a typical residual (fl owing) pressure
of 40 psi (2,8 bar) at the inlet. Conse-
quently, when performing hydraulic
design calculations for the fi re sprinkler
system, you do not need to consider
trickle fl ow through the Model RSV-1
Valve Internal By-Pass Restriction into
the domestic system.
When using the 2 inch RSV-1, the
maximum fl ow rate through the Internal
By-Pass Restriction, when the Model
RSV-1 Valve is in the operated position,
is no greater than 1.5 GPM (5,7 LPM)
for a typical residual (fl owing) pressure
of 40 psi (2,8 bar) at the inlet. Conse-
quently, when performing hydraulic
design calculations for the fi re sprin-
kler system, a 1.5 GPM (5,7 LPM) fl ow
demand is required to be added at
the RSV-1 and calculated back to the
source.
Components:
-
2
Body
1 -
4
9
12
13
1
7
8
6
3
2
5
8-3/16"
(208,0 mm)
4-15/16"
(125,4 mm)
3-1/4"
(82,6 mm)
2-3/8"
(60,3 mm)
WATER
SUPPLY
PORT, 1" NPT
3-5/8" DIA.
(92,1 mm)
FIRE
SPRINKLER
PORT, 1" NPT
DOMESTIC
PORT,
1" NPT
11
14
15
10
5
Top Cover
Screw,
Upper Cap
3 -
Upper Cap
-
4
O-Ring,
Cover (2)
5 -
Upper Seal
6 -
O-Ring,
Upper Sleeve
7 -
Sleeve
8 -
Spring
9 -
Differential
Ring
10 -
Lower Seal
11 -
Screw,
Piston (4)
12 -
Bottom Cover
13 -
Piston
-
14
O-Ring,
Lower Sleeve
15 -
Components:
4-1/2"
(114,3 mm)
4-9/16"
(115,9 mm)
5-3/8" DIA.
(136,5 mm)
3-3/4"
(95,3 mm)
9-1/16"
(230,2 mm)
FIRE
SPRINKLER
PORT, 2" NPT
DOMESTIC
PORT,
2" NPT
WATER
SUPPLY
PORT, 2" NPT
-
2
Insert Sleeve
Cover O-Ring
Insert Sleeve
O-Ring (2)
Piston Seal
Bottom Seal
-
8
-
4
7 -
3 -
Body
1 -
Piston Nut
Piston Spring
-
6
5 -
Piston Cover
Piston Insert
Cover
Retainer Ring
9 -
10 -
11 -
12 -
-
13
Bottom Seal
O-Ring
3
7
9
4
2
9
11
10
6
5
1
12
8
13
FIGURE 2
1 INCH (DN25) MODEL RSV-1 RESIDENTIAL SHUT-OFF VALVE
ASSEMBLY AND DIMENSIONS
FIGURE 3
2 INCH (DN50) MODEL RSV-1 RESIDENTIAL SHUT-OFF VALVE
ASSEMBLY AND DIMENSIONS
