Watts 007DCDA - Manual (Page 3)

Servicing Instructions
Series 007DCDA
1. Remove cover bolts and cover.
2. Remove the retainer from the body bore. The check valve
modules can now be removed from the valve by hand or with
a screwdriver.
3. The check seats are attached to the cage with a bayonet type
locking arrangement. Holding the cage in one hand, push the
seat inward and rotate counterclockwise against the cage.
The seat, spring cage, spring and disc assembly are now
individual components.
4. The disc assembly may now be cleaned and reassembled or
depending on its condition, may be discarded and replaced
with a new assembly from the repair kit. O-rings should be
cleaned or replaced as necessary. For more information, refer
to repair parts price list PL-RP-BPD.
5. Reassemble the Check valve modules. Check modules are
installed in the valve body with the seats facing the valve inlet.
The modules must be securely in place before the retainer can
be replaced.
NOTICE
No special tools required to service Series 007DCDA.
3
Horizontal Installation
Vertical-Up Installation
Parallel Installation
Main
Strainer Meter
Watts
2" (50mm)
007M1DCDA
Outdoor Installation
WattsBox Insulated Enclosures,
for more information, send for literature ES-WB.
WattsBox
Cover O-ring
Retainer
Body
First Check
Service Parts Kit
Second Check
Service Parts Kit
Cover
Seat Seat
O-ring
Disc.
Assy. Spring
Retainer Cage/
Seat
Check Assemblies — (007DCDA 2 1 ⁄
2
" and 3")
Exploded View — (007DCDA 2 1 ⁄
2
" and 3")