350 and 450 (2-1/2" and 3") Parts/Repair Kits

Parts Indentification

1. Bolt, Flange

2. Nut, Flange

3. Gasket, Flange

4. O-Ring, Cover Plate 

5. Cover Plate

6. Bolt, Cover Plate

7. Seat Retainer #1

8. Seat Retainer #2

9. O-Ring, Seat

10. Nut, Poppet Retainer

11. Washer, #1 Check

12. Washer, #2 Check

13. O-Ring, Stem

14. Poppet Retainer

15. Seal Ring

16. Seat Assembly, #1 Poppet

17. Seat Assembly, #2 Poppet

18. Gate Valve, NRS (FxF), NRS (GxF), OS&Y (FxF), OS&Y (GxF), Butterfly Valve (GxF)

19. Ball Valve, FxF

20. Ball Valve, MxF

21. Cover Retainer Assembly

22. Bulkhead Fittings

23. Sensing Line Bulkhead Fittings

24. Cover

350 and 450 (2-1/2" and 3") Parts/Repair Kits

350 AND 450

Double Check - Backflow Preventers - 2-1/2" and 3"

Where to Buy
Diagram # Product Number Description Shop Parts

212-BK

Flanged Kit, 2-1/2". Repair Kit contains: Bolt - Flange, Nut - Flange, Gasket - Flange.
Diagram # Product Number Description Shop Parts

RK212-350-COVERPLATE

Cover Plate Repair Kit, 2-1/2" and 3" 350 and 450. Repair Kit includes: O-Ring - Cover Plate, Cover Plate, Bolt - Cover Plate (2).

RK212-350-SEAT1-ASSY

#1 Seat Assembly Repair Kit, 2-1/2" and 3" 350 and 450. Repair Kit includes Seat Assembly - #1 Poppet.

RK212-350

Rubber Repair Kit, 2-1/2" and 3" 350 and 450. Repair Kit includes: O-Ring - Seat (2), O-Ring - Stem (2), Seal Ring (2).

RK212-350-SEAT2-ASSY

#2 Seat Assembly Repair Kit, 2-1/2" and 3" 350 and 450. Repair Kit includes Seat Assembly - #2 Poppet.

RK212-350CK1

First Check Assembly Repair Kit, 2-1/2" and 3" 350 and 450. Repair Kit includes: Seat Retainer #1, O-Ring - Seat, Nut - Poppet Retainer, Washer - #1 Check, O-Ring - Stem, Poppet Retainer, Seal Ring, Seat Assembly - #1 Poppet.

RK212-350CK2

Second Check Assembly Repair Kit, 2-1/2" and 3" 350 and 450. Repair Kit includes: Seat Retainer #2, O-Ring - Seat, Nut - Poppet Retainer, Washer - #2 Check, O-Ring - Stem, Poppet Retainer, Seal Ring, Seat Assembly - #2 Poppet.

BRK212-300-SEAT2-RTNR

#2 Check Seat Retainer Bulk Kit, 2-1/2" and 3" 350 and 450. Repair Kit includes Seat Retainer #2 (6).

BRK212-300-SEAT1-RTNR

#1 Check Seat Retainer Bulk Kit, 2-1/2" and 3" 350 and 450. Repair Kit includes Seat Retainer #1 (6).
Diagram # Product Number Description Shop Parts

3-BK

Flanged Kit, 3". Repair Kit includes Bolt - Flange(8), Nut - Flange (8), and Gasket - Flange(2).

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