Flomatic CB20 User Manual

Backflow Preventer Specification Submittal Sheet

Models CB20

APPLICATION:

Designed for installation on carbonated beverage
dispensing systems, to prevent Carbon dioxide (CO
gas or carbonated water from coming in contact with

FEATURES:

Sizes: □⅜”

Maximum working pressure: 150psi
Minimum working pressure: 10psi
Maximum working water temperature: 130ºF
Threaded connections: SAE J513

FLOW CHARACTERISTICS:

S
S

O
L

E
R
U
S
S
E
R
P

a

P

k

138 20

103 15

69 10

i

s

p

535

0

FLOW CURVE

.5

.03

11.5
.1.06

3/8" (10mm)

2

.13

2.5 gpm
.16 lps

FLOW RATE

copper potable water supply line.

COMPLIES WITH THE FOLLOWING STANDARDS:

● ASSE® 1022

MATERIALS:

Main valve body: Stainless Steel, 300 series

Tailpieces & fasteners: Stainless Steel, 300 series
Elastomers: Silicones and Buna Nitrile
(FDA approved)
Spring & screen: Stainless Steel, 300 series

C

M
A
X
1
5
0
P
S
I
1
3
0
°

F

Dimensions

A B C Weight Inlet Size Outlet Size

inch mm inch mm Vent lbs kg

3/8 3/8 3 3/4 83 1 25 1/8 NPT .3 .14

TYPICAL INSTALLATION:

FAILURE TO FOLLOW THESE INSTRUCTION WILL VOID ANY WARRANTY

The Model CB20 can be installed in the horizontal or vertical position. Under certain conditions the Model CB20 may discharge
water from the vent port. Provisions must be made to ensure that discharge will not damage surrounding property or equipment.
Copper tubing shall not be used downstream of the Model CB20.

SPECIFICATIONS:

The carbonated beverage backflow preventer shall be rated for 150psi. The body and tailpiece shall be stainless steel, series
300, and the elastomers shall be Silicone and Buna Nitrile (FDA approved). The CB20 shall include an integral stainless steel
screen. The carbonated beverage backflow preventer shall be Flomatic Model CB20.

WARRANTY: Flomatic valves are guaranteed against defects of materials or workmanship when used for the services recommended. If in any
recommended service, a defect develops due to material or workmanship, and the device is returned, freight prepaid, to Flomatic Corporation
within 12 months from the date of purchase, it will be repaired or replaced free of charge. Flomatic Corporations’ liability shall be limited to our
agreement to repair or replace the valve only.

Flomatic Corporation

A

)

2

B

Flomatic Corporation, 15 Pruyn’s Island, Glens Falls, New York 12801

Phone: [phone] Fax: [phone] www.flomatic.com

April 29,2004 Rev. 6 (6/11)

Specification Sheet CB20