Replacement Parts List

51
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MODEL 420XL and 420
Pressure Vacuum Breakers – 1/2" and 3/4"
Item
Number
Description 1/2" 3/4"
1 CANOPY SCREW 421-11 421-11
2 CANOPY 421-3 421-3
3 BONNET 421-20 421-20
4 O-RING 034N 034N
5 RELIEF VALVE ASSY - -
6 AIR INLET DISC 421A-34 421A-34
7 FLOAT - -
8 SPRING RETAINER 421A-80 421A-80
9 CHECK SPRING 421-33 421-33
10 POPPET 421-30 421-30
11 SEAL RING 421-12 421-12
12 SEAT 421-18 421-18
13 O-RING 126N 126N
14 SHUT-OFF VALVE 12-850TXL 34-850TXL
15 TEST COCK 18-860XL 18-860XL
16 FLOAT ASSEMBLY 421-340 421-340
17 SEAT ASSEMBLY 421-180 421-180
RK12-420
Qty. Part Number Part Number
1 421-180 SEAT ASSEMBLY
1 421-340 FLOAT ASSEMBLY
1 421-20 BONNET
1 034N O-RING
RK12-420FK
Qty. Part Number Description
1 421-20 BONNET
1 421-30 POPPET
1 421-340 FLOAT ASSEMBLY
1 034N O-RING
1 421-12 SEAL RING
RK12-420R
Qty. Part Number Part Number
1 421-12 SEAT RING
1 421A-34 AIR INLET DISC
1 126N O-RING
1 034N O-RING
Repair Kit, Complete
Repair Kit, Rubber
Repair Kit, Freeze
Rev. C