Service, Replacement Parts and Maintenance
Series 719 and LF719 Double Check Valve Assemblies
Servicing the First and Second Check Valves
NOTE:
Before servicing, be certain water is turned off or shutoff
valves are closed
1. Close shutoff valves up and downstream of the valve.
2. Using an appropriate sized wrench, loosen the check valve
cover. Unscrew the check valve cover and lift off.
3. Remove spring.
4. Lift out disc holder assembly from body of valve.
5. To reverse the seat disc, unscrew disc screw and disassem-
ble disc washer and disc rubber from disc holder assembly.
Reverse rubber so opposite face is showing. Assemble disc
screw through disc washer and rubber and screw into disc
holder.
6. To replace seat module, pull out of body by gripping at rein-
forcement ring. Replace seat module with new component by
placing into body seat bore. Tightening cover will engage seat
properly.
7. Insert disc holder assembly back into seat module.
8. Replace spring insuring that it seats properly on disc holder.
9. Place cover onto spring with internal guide on cover posi-
tioned inside end coil.
10. Screw cover onto valve body.
11. Tighten cover wrench tight.
10. Open shutoff valves.
Seat
O-ring
Disc Screw
Reinforcement
Ring
Seat
Disc Washer
Disc Rubber
Disc Holder
Cover
Cover
O-Ring
Spring
Body
3
* The wetted surface of this product contacted by consumable
water contains less than 0.25% of lead by weight.
LEAD FRE
E
*
Repair Kits
1
⁄
2
" – 2" (15 – 50mm)
When ordering, specify ordering code number, kit number
and valve size
Ordering cOde
Kit nO.
Size
in.
mm
Total Repair Kits
0889083
RK 719-T
1
⁄
2
15mm
0889084
RK 719-T
3
⁄
4
20mm
0889085
RK 719-T
1
25mm
0889086
RK 719-T
1
1
⁄
4
– 1
1
⁄
2
32-40mm
0889087
RK 719-T
2
50mm
Kit consists of: 2 First or Second Check Repair Kits
1st or 2nd Check Kits
0888100
RK 719R10 CK4
1
⁄
2
–
3
⁄
4
15-20mm
0889060
RK 719 CK4
1
⁄
2
15mm
0889061
RK 719 CK4
3
⁄
4
20mm
0889062
RK 719 CK4
1
25mm
0888101
RK 719 CK4
1
1
⁄
4
– 1
1
⁄
2
32-40mm
0888102
RK 719 CK4
2
50mm
Kit consists of: Disc holder, Spring and Cover O-ring
1st or 2nd Check Rubber Parts Kits
0888103
RK 719R10 RC4
1
⁄
2
–
3
⁄
4
15-20mm
0889063
RK 719 RT
1
⁄
2
15mm
0889064
RK 719 RT
3
⁄
4
20mm
0889065
RK 719 RT
1
25mm
0888104
RK 719 RT
1
1
⁄
4
– 1
1
⁄
2
32-40mm
0888105
RK 719 RT
2
50mm
Kit consists of: Disc rubber, Seat O-ring and Cover O-ring
1st or 2nd Check Seat Kits
0888997
RK 719R10 S
1
⁄
2
–
3
⁄
4
15-20mm
0889069
RK 719 S
1
⁄
2
15mm
0889070
RK 719 S
3
⁄
4
20mm
0889071
RK 719 S
1
25mm
0888998
RK 719 S
1
1
⁄
4
– 1
1
⁄
2
32-40mm
0888999
RK 719 S
2
50mm
Kit consists of: Seat, Seat O-ring and Cover O-ring
1st or 2nd Check Cover Kits
0888106
RK 719R10 C
1
⁄
2
–
3
⁄
4
15-20mm
0889066
RK 719 C
1
⁄
2
15mm
0889067
RK 719 C
3
⁄
4
20mm
0889068
RK 719 C
1
25mm
0888107
RK 719 C
1
1
⁄
4
– 1
1
⁄
2
32-40mm
0888108
RK 719 C
2
50mm
0794039
LFRK 719 C
1
⁄
2
15mm
0794040
LFRK 719 C
3
⁄
4
20mm
0794041
LFRK 719 C
1
25mm
0794042
LFRK 719 C
1
1
⁄
4
– 1
1
⁄
2
32-40mm
0794043
LFRK 719 C
2
50mm
Kit consists of: Cover and Cover O-ring.
Note: For 1
1
/
4
" 719R15 models use 1
1
/
4
" – 1
1
/
2
" repair kits.
LEAD FRE
E
*
LEAD FRE
E
*
LEAD FRE
E
*
LEAD FRE
E
*
