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Operating
Principles
When a fi re sprinkler activates dur-
ing domestic usage, the TYCO RAPID
RESPONSE Model RSV-1 Residential
Shut-Off Valve automatically shuts off
fl ow to the domestic system and di-
verts the available water supply to the
fi re sprinkler system, thereby eliminat-
ing a reduced fl ow condition in the
sprinkler system that might otherwise
be caused by possible signifi cant do-
mestic water usage.
When the Model RSV-1 Valve is in the
normal standby position as shown in
Figures 7 and 8, the Piston Assembly,
assisted by its Spring, is in the down
position. With the Piston Assembly in
the down position, the Fire Sprinkler
Seal permits the Model RSV-1 Valve
to perform as a conventional check
valve. Also, with the Piston Assembly
in the down position, water is avail-
able on demand through the Domestic
Flow Passage and out the Domestic
Port.
Upon operation and with a minimum
design water fl ow (e.g., 12.5 GPM (47,3
LPM) for the 1 inch Valve or 8 GPM
(30,5 LPM) for the 2 Inch Valve) to the
automatic residential fi re sprinkler
system, the Piston Assembly moves
upward. With the Piston Assembly in
the up position, any water fl ow to the
Domestic Port is diverted to the Fire
Sprinkler Port.
The contours of the Piston Assembly
are specifi cally confi gured to minimize
its upward movement except under
the level of sustained fi re sprinkler
system fl ow resulting from operation
of one or more fi re sprinklers. How-
ever, because most fi re sprinkler sys-
tems contain air pockets, the Piston
Assembly tends to move momentarily
upward when there is a surge in sup-
ply pressure.
The momentary opening and re-clos-
ing of the Piston Assembly at the Fire
Sprinkler Line Seal traps a portion
of the pressure increase within the
fi re sprinkler system. Trapped pres-
sure increases within the fi re sprinkler
system help to prevent a subsequent
surge in the supply pressure from
causing the water-fl ow detector to sig-
nal a false alarm (unless a by-pass is
installed per Figure 2).
(Continued on Page 4)
Components:
1 -
Body
-
2
2
Top Cover
3 -
Screw,
5
Upper Cap
-
4
Upper Cap
3
5 -
O-Ring,
Cover (2)
4
6 -
Upper Seal
6
7 -
O-Ring,
Upper Sleeve
7
8 -
Sleeve
9 -
Spring
8
10 -
Differential
9
Ring
11 -
Lower Seal
1
12 -
Screw,
Piston (4)
12
13 -
Bottom Cover
-
13
14
Piston
15 -
O-Ring,
WATER
Lower Sleeve
SUPPLY
PORT, 1" NPT
1 INCH (DN25) MODEL RSV-1 RESIDENTIAL SHUT-OFF VALVE
ASSEMBLY AND DIMENSIONS
12
10
1
Components:
1 -
Body
6
-
2
Insert Sleeve
5
3 -
Bottom Seal
-
4
Piston Cover
11
5 -
Piston Seal
-
6
Piston Insert
9
7 -
Piston Spring
-
2
8
Piston Nut
9 -
Insert Sleeve
4
O-Ring (2)
10 -
Cover O-Ring
9
11 -
Retainer Ring
12 -
Cover
3
-
13
Bottom Seal
13
O-Ring
7
8
2 INCH (DN50) MODEL RSV-1 RESIDENTIAL SHUT-OFF VALVE
ASSEMBLY AND DIMENSIONS
3-5/8" DIA.
(92,1 mm)
DOMESTIC
FIGURE 3
5-3/8" DIA.
(136,5 mm)
WATER
SUPPLY
3-3/4"
PORT, 2" NPT
(95,3 mm)
FIGURE 4
TFP980
Page 3 of 8
FIRE
SPRINKLER
PORT, 1" NPT
3-1/4"
PORT,
(82,6 mm)
1" NPT
8-3/16"
15
(208,0 mm)
10
4-15/16"
11
(125,4 mm)
14
5
2-3/8"
(60,3 mm)
FIRE
SPRINKLER
PORT, 2" NPT
DOMESTIC
PORT,
2" NPT
4-1/2"
(114,3 mm)
9-1/16"
(230,2 mm)
4-9/16"
(115,9 mm)
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