Servicing First and Second Checks
Sizes: 2
1
⁄
2
" – 10" (65-250mm)
1. Remove the hatch cover bolts. NOTE: The 909 is designed so
that when the bolts are backed off
1
⁄
2
", all the spring load is
released from the cover and retained by the check module.
CAUTION: Be sure to verify this before removing all the bolts.
2. Lift the check valve module straight out taking care not to hit and
damage the seating.
3. The seat ring may be removed and replaced by pulling out the
two wire retainers on sizes 4" – 10" (100 – 250) while on sizes
2
1
⁄
2
" – 3" (65 – 80mm), one quarter turn twist removes seat.
The wire retainers are 10" long. One is drawn out clockwise
and the other is drawn out counterclockwise.
4. With the retainer wires removed, the seat ring can be lifted
straight up and removed.
5.
CAUTION:
The check valve spring is in compression. The spring
load is captured by the two spring retainers and the stem. The
spring retainers are not to be removed for servicing. If there is a
need to replace the spring, spring retainer or stem, an assembled
module must be obtained from the factory. These modules are
not interchangeable, be sure to replace the first check with a first
check module and the second check with a second check module.
6. To replace the disc on sizes 2
1
⁄
2
" – 4" (65 – 100mm) simply
remove the retaining nut or for sizes 6" – 10" (150 – 250mm)
remove the allen head socket screws. Reverse this procedure to
install the new disc.
909 Repair Kits 2
1
⁄
2
" – 10" (65 – 250mm)
ORDERING CODE
KIT NO.
SIZE
First Check Kits:
in.
mm
0887210
RK 909 CK1
2
1
⁄
2
– 3
65-80
0887212
RK 909 CK1
4
100
0887213
RK 909 CK1
6
150
0887214
RK 909 CK1
8
200
0887215
RK 909 CK1
10
250
Second Check Kits:
0887211
RK 909 CK2
2
1
⁄
2
– 3
65-80
0887216
RK 909 CK2
4
100
0887217
RK 909 CK2
6
150
0887218
RK 909 CK2
8
200
0887219
RK 909 CK2
10
250
Kits include: Disc & Spring assembly, Cover O-ring and lubricant.
First Check Rubber Parts Kits:
0887220
RK 909 RC1
2
1
⁄
2
– 3
65-80
0887221
RK 909 RC1
4
100
0887223
RK 909 RC1
6
150
0887224
RK 909 RC1
8
200
0887225
RK 909 RC1
10
250
Second Check Rubber Parts Kits:
0887226
RK 909 RC2
2
1
⁄
2
– 3
65-80
0887227
RK 909 RC2
4
100
0887228
RK 909 RC2
6
150
0887229
RK 909 RC2
8
200
0887230
RK 909 RC2
10
250
Kits include: Lower Stem O-ring (6" only), Check disc, Cover O-ring, and lubricant.
Seat Kits for Checks:
0887730
RK 909 S
2
1
⁄
2
– 3
65-80
0887731
RK 909 S
4
100
0887732
RK 909 S
6
150
0887733
RK 909 S
8
200
0887734
RK 909 S
10
250
Kits include: Seat, Seat O-ring, Cover O-ring, Retainer wire and lubricant.
Total Rubber Parts Kits:
0887750
RK 909 RT
2
1
⁄
2
– 3
65-80
0887751
RK 909 RT
4
100
0887752
RK 909 RT
6
150
0887753
RK 909 RT
8
200
0887754
RK 909 RT
10
250
0887761
RK 909M1 RT
8
200
0887762
RK 909M1 RT
10
250
Kits include: Lower Stem O-ring (6" only), Check disc, Cover O-ring, Sleeve O-ring,
Piston O-ring, RV disc assembly, Diaphragm, Piston seal and Lubricant.
When ordering specify EDP number, Kit Number and Valve Size.
909RPDA Repair Kits 2
1
⁄
2
" – 10" (65 – 250mm)
ORDERING CODE
KIT NO.
SIZE
First Check Kits:
in.
mm
0887239
RK 909RPDA CK1
2
1
⁄
2
– 3
65-80
0887240
RK 909RPDA CK1
4
100
0887241
RK 909RPDA CK1
6
150
0887242
RK 909RPDA CK1
8
200
0887243
RK 909RPDA CK1
10
250
Second Check Kits:
0887244
RK 909RPDA CK2
2
1
⁄
2
– 3
65-80
0887245
RK 909RPDA CK2
4
100
0887246
RK 909RPDA CK2
6
150
0887247
RK 909RPDA CK2
8
200
0887248
RK 909RPDA CK2
10
250
Kits include: Disc & Spring assembly, Cover O-ring and lubricant.
First Check Rubber Parts Kits:
0887249
RK 909RPDA RC1
2
1
⁄
2
– 3
65-80
0887250
RK 909RPDA RC1
4
100
0887251
RK 909RPDA RC1
6
150
0887252
RK 909RPDA RC1
8
200
0887253
RK 909RPDA RC1
10
250
Second Check Rubber Parts Kits:
0887254
RK 909RPDA RC2
2
1
⁄
2
– 3
65-80
0887255
RK 909RPDA RC2
4
100
0887256
RK 909RPDA RC2
6
150
0887257
RK 909RPDA RC2
8
200
0887258
RK 909RPDA RC2
10
250
Kits include: Lower Stem O-ring (6" only), Check disc, Cover O-ring, and lubricant.
Seat Kits for Checks:
0887735
RK 909RPDA S
2
1
⁄
2
– 3
65-80
0887736
RK 909RPDA S
4
100
0887737
RK 909RPDA S
6
150
0887738
RK 909RPDA S
8
200
0887739
RK 909RPDA S
10
250
Kits include: Seat, Seat O-ring, Cover O-ring, Retainer wire and lubricant.
Total Rubber Parts Kits:
0887756
RK 909RPDA RT
2
1
⁄
2
– 3
65-80
0887757
RK 909RPDA RT
4
100
0887758
RK 909RPDA RT
6
150
0887759
RK 909RPDA RT
8
200
0887760
RK 909RPDA RT
10
250
0887764
RK 909RPDAM1 RT
8
200
0887765
RK 909RPDAM1 RT
10
250
Kits include: Lower Stem O-ring (6" only), Check disc, Cover O-ring, Sleeve O-ring,
Piston O-ring, RV disc assembly, Diaphragm, Piston seal and Lubricant.
NOTE:
No special tools
required to service
Series 909
First and second checks
are not interchangeable
First
Check
Second
Check
Relief
Valve
*Warning: Spring assembly is factory assembled. DO NOT DISASSEMBLE
*Disc & Spring
Assembly
Seat
Seat O-ring
Cover O-ring
2
1
⁄
2
" – 3"
(65 – 80mm)
*Disc & Spring
Assembly
Retainer wire
Seat O-ring
Cover O-ring
4" – 10" (100 – 250mm)
Lower Stem
O-ring (6" only)
Seat
Disc
For further details contact your technical sales representative, see back page.
909OSY
5
