Specifications

25
WATTS ACV 113-6RFP
FLOOD PROTECTION
SHUTDOWN VALVE
PROBLEM
Property damage due to relief valve discharge that can
occur due to dirt and debris within the valve
or a mechanical failure within the backflow prevention
assembly. Typical conditions which can cause continu-
ous relief valve discharge are: dirt/debris on first check
seat of the reduced pressure backflow preventer,
clogged relief valve sensing line, relief valve diaphragm
failure, broken first check valve spring, and improper
RPZ startup procedures.
Supply
Main
First
Check
Second
Check
110 VAC
Floor
Floor Drain
To Junction Box
To Flow Switch
Inlet
Shut-off
Valve
Relief
Valve
Air Gap
Watts ACV
113-6RFP
FS 99
Watts 909
2.5" - 10"
SOLUTION
Watts has developed the 113-6RFP Flood Protection -
Shutdown Valve. The 113-6RFP remains fully open
under normal conditions. If the RPZ relief valve should
open, excess flow through the drain pipe trips the flow
sensor which energizes the solenoid on the 113-6RFP
valve and it goes closed. Unlike a normal solenoid
valve, the 113-6RFP cannot re-open if flow stops and /
or the solenoid is de-energized. The Watts ACV solu-
tion to intermittent dumping is a time delay located in
the JB113 Junction Box between the flow sensor and
the 113-6RFP to keep the control valve solenoid from
energizing until required. A valve mounted Fig. 51 Limit
Switch is supplied which sends out a remote signal to
sound an alarm, indicating that the valve is closed. The
113-6RFP is equipped with manual reset to restore
flow after the RPZ is repaired by the building mainte-
nance engineer or backflow technician.