Replacement Part List

12
Form No. 480-023 Zurn Wilkins Repair Kits Guide, 3/19
For additional information, please visit www.zurn.com.
MODEL 350A and 350
Double Check – Backflow Preventers 350A (2-1/2" to 10") and 350 (4" to 12")
Repair Kit Components
2-1/2 - 4" 4" 6" 8" 8"- 12" 10" 12"
Size Range
RK212-350-COVERPLATE RK4-350 RK4-350CK1 RK4-350CK2 RK4-LBF-SEAL-RTNR BRK4-LBF-SEAT1RTNR BRK4-LBF-SEAT2RTNR RK4-350-SEAT2-ASSY 4-BK RK6-350 RK6-350CK1 RK6-350CK2 RK6-350-SEAT2-ASSY BRK6-LBF-SEAT1RTNR BRK6-LBF-SEAT2RTNR 6-BK 8-BK RK8-350 RK8-350CK1 RK8-350CK2 RK8-350-SEAT1-ASSY RK8-350-SEAT2-ASSY RK8-350-COVERPLATE 10-BK 12-BK
2-1/2"
• • • • • • •
3"
• • • • • • •
4"
• • • • • • • • •
6"
• • • • • • •
8"
• • • • • • •
10"
• • • • • • •
12"
• • • • • • •
Item # Item Description
1 Bolt, Flange
•
(x16)
•
(x16)
•
(x16)
•
(x24)
•
(x24)
2 Nut, Flange
•
(x16)
•
(x16)
•
(x16)
•
(x24)
•
(x24)
3 Gasket, Flange
•
(x2)
•
(x2)
•
(x2)
•
(x2)
•
(x2)
4 O-Ring, Cover Plate
• •
5 Cover Plate
• •
6 Bolt, Cover Plate
•
(x2)
•
(x2)
7 Seat Retainer #1
• •
(x6)
• •
(x6)
•
(x4)
•
(x7)
8 Seat Retainer #2
• •
(x12)
•
(x2)
•
(x12)
9 O-Ring, Check
•
(x2)
• • •
(x2)
• • •
(x2)
10 Bolt, Poppet Retainer
•
(x4)
•
(x4)
•
(x4)
•
(x4)
•
(x6)
•
(x6)
11 Handle, #1 Poppet Assembly
• •
12 Washer, Poppet Bolt
•
(x4)
•
(x4)
•
(x4)
•
(x4)
•
(x6)
•
(x6)
13 O-Ring, Poppet Bolt
•
(x8)
•
(x4)
•
(x4)
•
(x4)
•
(x8)
•
(x4)
•
(x4)
•
(x12)
•
(x6)
•
(x6)
14 Poppet Retainer
• • • • • • •
15 Seal Ring
•
(x2)
• • •
(x2)
• • •
(x2)
16 Seat Assembly, #1 Poppet
• • • •
17 Seat Assembly, #2 Poppet
• • • • • •
18 Washer, Seat Retainer
•
(x4)
•
(x7)
Whole Goods (Available for individual sale)
Item # Item Description 2-1/2" 3" 4" 6" 8" 10" 12"
19
Gate Valve, NRS (FxF) 212-48 3-48 4-48 6-48 8-48 10-48 12-48
Gate Valve, NRS (GxG) 212-48G 3-48G 4-48G 6-48G 8-48G 10-48G 12-48G
Gate Valve, NRS (GxF) 212-48GXF 3-48GXF 4-48GXF 6-48GXF 8-48GXF 10-48GXF 12-48GXF
Gate Valve, OS&Y (FxF) 212-48OSY 3-48OSYG 4-48OSY 6-48OSY 8-48OSY 10-48OSY 12-48OSY
Gate Valve, OS&Y (GxG) 212-48OSYG 3-48OSYG 4-48OSYG 6-48OSYG 8-48OSYG 10-48OSYG 12-48OSYG
Gate Valve, OS&Y (GxF) 212-48OSYGXF 3-48OSYGXF 4-48OSYGXF 6-48OSYGXF 8-48OSYGXF 10-48OSYGXF 12-48OSYGXF
Butterfly Valve (GxG) 212-49G 3-49G 4-49G 6-49G 8-49G 10-49G 12-49G
Butterfly Valve (GxF) 212-49GXF 3-49GXF 4-49GXF 6-49GXF 8-49GXF 10-49GXF 12-49GXF
20 Ball Valve, FxF 12-850XL 34-850XL
21 Ball Valve, MxF 12-850MXL 34-850MXL
22 Cover Retainer Assembly 6-23 8-23 12-23
23 Grooved Coupling 4X212-23 4X3-23 4-23 6-23 8-23 10-23 12-23
24 Bulkhead Fittings BHF1CXL-100
25 Sensing Line Bulkhead Fittings BHF1BXL-100
26 Cover RK4-LBF-VALVE-COVER RK6-LBF-VALVE-COVER RK8-LBF-VALVE-COVER
Item No. Repair Kit Description
2-1/2" - 4"
RK212-350-COVERPLATE Cover Plate Repair Kit, 2-1/2" - 4" 350A
RK4-350 Standard Repair Kit, 2-1/2" - 4" 350A
RK4-350CK1 #1 Check Assembly Repair Kit, 2-1/2" - 4" 350A
RK4-350CK2 #2 Check Assembly Repair Kit, 2-1/2" - 4" 350A
RK4-LBF-SEAL-RTNR Poppet Retainer Repair Kit, 2-1/2" - 4" 350A
BRK4-LBF-SEAT1RTNR Bulk #1 Seat Retainer Kit, 2-1/2" - 4" 350A
BRK4-LBF-SEAT2RTNR Bulk #2 Seat Retainer Kit, 2-1/2" - 4" 350A
4"
RK4-350-SEAT2-ASSY #1 & #2 Seat Assembly Repair Kit, 4" 350A
4-BK Flanged Kit, 4"
Item No. Repair Kit Description
6"
RK6-350 Standard Repair Kit, 6" 350A
RK6-350CK1 #1 Check Assembly Repair Kit, 6" 350A
RK6-350CK2 #2 Check Assembly Repair Kit, 6" 350A
RK6-350-SEAT2-ASSY #1 and #2 Seat Assembly Repair Kit, 6" 350A
BRK6-LBF-SEAT1RTNR Bulk #1 Seat Retainer Kit, 6" 350A
BRK6-LBF-SEAT2RTNR Bulk #2 Seat Retainer Kit, 6" 350A
6-BK Flanged Kit, 6"
8"
8-BK Flanged Kit, 4"
Item No. Repair Kit Description
8" - 12"
RK8-350 Standard Repair Kit, 8" - 12" 350A
RK8-350CK1 #1 Check Assembly Repair Kit, 8" - 12" 350A
RK8-350CK2 #2 Check Assembly Repair Kit, 8" - 12" 350A
RK8-350-SEAT1-ASSY #1 Seat Assembly Repair Kit, 8" - 12" 350A
RK8-350-SEAT2-ASSY #2 Seat Assembly Repair Kit, 8" - 12" 350A
RK8-350-COVERPLATE Cover Plate Repair Kit, 8" - 12" 350A
10"
10-BK Flanged Kit, 10"
12"
12-BK Flanged Kit, 12"