Product Overview

ManualsBrandsCaleffi ManualsBackflow Preventers1/2" Press 574 Brass RPZ Backflow Preventer (Lead Free)

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5

14

1 Discharge assembly

2 Upstream check valve

3 Downstream check valve

4 Discharge valve seat

5 Air gap

6 Deﬂector

7 Pressure test port

8 Iinspection Cover

9 Split ring

10 Body

11 Gasket

12 Tailpiece

13 Union nut

14 Discharge pipe*

Ref # 574050A

1 59471

Spare part code #

2 59469

3 59470

4 59472

5 39623

Spare parts

Equipment for annual inspection includes:

- upstream pressure gauge

- downstream pressure gauge

- differential pressure gauge

- ﬂexible hoses and ﬁttings

Inspection equipment

10

*2” PVC or 1¼” PE4710 polyethylene

tubing (ASTM D-2239), separately

sourced.

574050A

574056A

(¾”)

1 Discharge assembly

2 Upstream check valve

3 Downstream check valve

4 Discharge valve seat

5 Air gap

6 Deﬂector

7 Pressure test port

8 Iinspection Cover

9 Split ring

10 Body

11 Gasket

12 Tailpiece

13 Union nut

14 Discharge pipe*

Ref #

574050A

574056A

Backow code #

1 59471

Spare part order

code #

2 59469

3 59470

4 59472

5 39623

Equipment for annual inspection includes:

-upstream pressure gauge

-downstream pressure gauge

-differential pressure gauge

-flexible hoses and fittings

Inspection equipment

*2” PVC or 1¼” PE4710 polyethylene

tubing (ASTM D-2239), separately

sourced.