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TFP982
Page 2 of 6
Physical Characteristics
1 Inch (DN25) Valve
Body . . . . . . . . . . . . . . . . . . . . . . Stainless Steel
Top and Bottom Cover . . . . . . . . Stainless Steel
Upper Cap . . . . . . . . . . . . . . . . . . Stainless Steel
Bottom Seal . . . . . . . . . . . . . . . . Stainless Steel
Piston . . . . . . . . . . . . . . . . . . . . . . . . . . . Plastic*
Differential Ring . . . . . . . . . . . . . . . . . . . Plastic*
Sleeve . . . . . . . . . . . . . . . . . . . . . . . . . . . Plastic*
Upper and Lower Seals . . . . . . . . . . . . . . EPDM
O-Rings . . . . . . . . . . . . . . . . . . . . . . . . . . Buna-N
Piston Spring . . . . . . . . . . . . . . . Stainless Steel
Piston Screws . . . . . . . . . . . . . . . Stainless Steel
Cap Screw . . . . . . . . . . . . . . . . . . Stainless Steel
2 Inch (DN50) Valve
Body and Cover . . . . . . . . . . . . . Stainless Steel
Piston Insert . . . . . . . . . . . . . . . . Stainless Steel
Bottom Seal . . . . . . . . . . . . . . . . Stainless Steel
Piston Cover . . . . . . . . . . . . . . . . . . . . . . Plastic*
Insert Sleeve . . . . . . . . . . . . . . . . . . . . . . Plastic*
Piston Seal . . . . . . . . . . . . . . . . . . . . . . . . EPDM
O-Rings . . . . . . . . . . . . . . . . . . . . . . . . . . . EPDM
Piston Spring . . . . . . . . . . . . . . . Stainless Steel
Piston Nut . . . . . . . . . . . . . . . . . . Stainless Steel
Retainer Ring . . . . . . . . . . . . . . . Stainless Steel
* Glass Reinforced Polyphenylene Oxide
Design
Criteria
The TYCO Model RSV-1 Residential
Shut-Off Valve must be installed verti-
cally with the Water Supply Port at the
bottom, the Fire Sprinkler Port at the
top, and the Domestic Port at the side
(Ref. Figures 4 and 5). Figure 1 shows
the typical installation arrangement.
Refer to the Installation section for
additional design considerations.
Water Supply Requirements
1 Inch (DN25) Valve
In order for the 1 Inch (DN25) Model
RSV-1 Valve to operate automati-
cally upon sprinkler operation, the fire
sprinkler system from the water main
to the most hydraulically remote sprin-
kler must be designed to provide a
minimum single sprinkler flow of 12.5
GPM (47,3 LPM) when the supply
pressure at the main is at its minimum
expected value.
The minimum single sprinkler flow
rate of 12.5 GPM (47,3 LPM), required
for use with the 1 Inch (DN25) Model
RSV-1 Valve, does not take precedence
over any more hydraulically demanding
single sprinkler flow rate specified for
the residential sprinklers in use.
When performing hydraulic design cal-
culations for the fire sprinkler system,
you need not account for the trickle
flow through the 1 Inch (DN25) Model
RSV-1 Valve By-Pass Restriction into
the domestic system.
For the 1 Inch (DN25) Model RSV-1
Valve, the maximum water supply
service line is 1 inch (DN25).
FIRE SPRINKLER
SYSTEM PRESSURE
GAUGE
WATERFLOW
DETECTOR
(FIRE ALARM)
MODEL RSV-1
RESIDENTIAL
SHUT-OFF VALVE
(AUTOMATIC)
WATER
SUPPLY
GATE
WATER
VALVE
METER
WATER
SUPPLY
WATER SUPPLY
MAIN
MODEL RSV-1 RESIDENTIAL SHUT-OFF VALVE
TYPICAL INSTALLATION ARRANGEMENT
2 Inch (DN50) Valve
In order for the 2 Inch (DN50) Model
RSV-1 Valve to operate automatically
at sprinkler activation, the fire sprinkler
system from the water supply main to
the most hydraulically remote sprin-
kler must be designed to provide a
minimum single sprinkler flow of 8 GPM
(30,5 LPM) when the water supply pres-
sure at the water supply main is at its
minimum expected value.
The minimum single sprinkler flow rate
of 8 GPM (30,5 LPM), required for use
with the 2 Inch (DN50) Model RSV-1
Valve, does not take precedence over
any more hydraulically demanding
single sprinkler flow rate specified for
the residential sprinklers in use.
Operating
Principles
When a fire sprinkler activates during
domestic usage, the TYCO Model
RSV-1 Residential Shut-Off Valve auto-
matically diverts flow to the domestic
system and diverts the available water
supply to the fire sprinkler system,
thereby eliminating a reduced flow con-
dition in the sprinkler system that might
otherwise be caused by possible sig-
nificant domestic water usage.
AUTOMATIC FIRE SPRINKLERS
MAIN
CONTROL
VALVE
SUPPLY
PRESSURE
GAUGE
BACKFLOW PREVENTER AS
REQUIRED BY AUTHORITY
HAVING JURISDICTION
FIGURE 1
When the Model RSV-1 Valve is in the
normal standby position as shown in
Figures 4 and 5, 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 available
on demand through the Domestic Flow
Passage and out the Domestic Port.
Upon operation and with a minimum
design water flow (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 fire sprinkler
system, the Piston Assembly moves
upward. With the Piston Assembly in
the up position, any water flow to the
Domestic Port is diverted to the Fire
Sprinkler Port.
The contours of the Piston Assembly
are specifically configured to minimize
its upward movement except under the
level of sustained fire sprinkler system
flow resulting from operation of one or
more fire sprinklers. However, because
most fire sprinkler systems contain air
pockets, the Piston Assembly tends to
move momentarily upward when there
is a surge in supply pressure.
DRAIN AND FLOW
TEST CONNECTION
ALARM TEST
CONNECTION
TO DOMESTIC
SYSTEM
DOMESTIC
CONTROL
VALVE
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