Zurn 38-740F Installation guide

Zurn
Brand
Zurn
Model
38-740F
Type
Installation guide

Zurn 38-740F is a carbonated beverage backflow preventer with vent and integral strainer. It is designed for installation on carbonated beverage dispensing systems, as well as non-carbonated systems, to prevent carbon dioxide (CO2) gas or carbonated water from coming in contact with the copper potable water supply line. The integral strainer prevents debris from fouling checks. The 38-740F is made of stainless steel and has a maximum working water pressure of 150 PSI and a minimum working water pressure of 10 PSI.

Zurn 38-740F is a carbonated beverage backflow preventer with vent and integral strainer. It is designed for installation on carbonated beverage dispensing systems, as well as non-carbonated systems, to prevent carbon dioxide (CO2) gas or carbonated water from coming in contact with the copper potable water supply line. The integral strainer prevents debris from fouling checks. The 38-740F is made of stainless steel and has a maximum working water pressure of 150 PSI and a minimum working water pressure of 10 PSI.

Zurn Industries, LLC | Wilkins
1747 Commerce Way, Paso Robles, CA U.S.A. 93446  Ph. 855-663-9876, Fax 805-238-5766
In Canada | Zurn Industries Limited
3544 Nashua Drive, Mississauga, Ontario L4V 1L2  Ph. 905-405-8272, Fax 905-405-1292
www.zurn.com
Rev. C
Date: 1/17
Document No. BF-740
Product No. Mode 740
Model 740
Carbonated Beverage Back ow Preventer with Vent and Integral Strainer
Application
Dual Check Valve with Vent designed for installation on
carbonated beverage dispensing systems, as well as non-
carbonated systems, to prevent Carbon dioxide (CO ) gas
or carbonated water from coming in contact with copper
potable water supply line. Integral strainer to prevent debris
from fouling checks.
Standards Compliance
• ASSE® Listed 1022
• Certified to NSF/ANSI 372* by IAPMO R&T
(0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)
Materials
Main valve body Stainless steel, 300 series
Tailpieces & fasteners Stainless steel, 300 series
Elastomers Silicone and Buna Nitrile
(FDA approved)
Spring & screen Stainless steel, 300 series
Flow Characteristics
2
CO
Gas
Carbonator
MODEL 740
BACKFLOW PREVENTER
Filter
PUMP
WATER
SUPPLY
SAFE DRAIN
CARBONATED
BEVERAGE
DISPENSER
Typical Installation
The Model 740 can be installed in the horizontal or vertical position. Under certain conditions the Model 740 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 740.
Features
Maximum working water pressure 150 PSI
Minimum working water pressure 10 PSI
Maximum working water temperature 130°F
Threaded connections SAE J513
FNPT
Speci cations
The Carbonated Beverage Backflow Preventer shall be certified to NSF/ANSI 372, rated for 150 PSI. The body and
tailpiece shall be stainless steel, series 300, and the elastomers shall be Silicone and Buna Nitrile (FDA Approved).
The Carbonated Beverage Backflow shall include an integral stainless steel strainer screen. The Carbonated Beverage
Backflow Preventer shall be a ZURN Wilkins Model 740.
Dimensions & Weights (do not include pkg.)
0
0.5
1.5
2
2.5
0
10
5
15
20
1
FLOW RATES (GPM)
PRESSURE LOSS (PSIG)
69
PRESSURE LOSS (kpa)
FLOW RATES (l/s)
MODEL 740 3/8" (STANDARD & METRIC)
3/8" (9mm)
0.03
103
0.13
0.06 0.1
0.16
35
138
Beverage
Dispenser
WATER
SUPPLY
MODEL 740
BACKFLOW PREVENTER
SAFE DRAIN
38-740
38-740F
A
A
C
B
B
  • Page 1 1

Zurn 38-740F Installation guide

Zurn
Brand
Zurn
Model
38-740F
Type
Installation guide

Zurn 38-740F is a carbonated beverage backflow preventer with vent and integral strainer. It is designed for installation on carbonated beverage dispensing systems, as well as non-carbonated systems, to prevent carbon dioxide (CO2) gas or carbonated water from coming in contact with the copper potable water supply line. The integral strainer prevents debris from fouling checks. The 38-740F is made of stainless steel and has a maximum working water pressure of 150 PSI and a minimum working water pressure of 10 PSI.

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