The Wilkins 38-740F is a dual check valve with vent designed for carbonated and non-carbonated beverage dispensing systems, preventing CO2 gas or carbonated water from entering potable water lines.

Key Specifications:

• Size: 3/8 Inches
• Maximum Working Water Pressure: 200 PSI
• Maximum Working Water Temperature: 110°F
• Notable Certifications: ASSE 1022, NSF/ANSI 372
• Threaded Connections: Female National Pipe Thread (FNPT) inlet and outlet

Other Related Variants:

• 38-740:  SAE J513 flare fittings

Materials:

• Main valve body: Stainless steel, 300 series
• Tailpieces and fasteners: Stainless steel, 300 series
• Elastomers: Silicone and Buna Nitrile (FDA approved)
• Spring and screen: Stainless steel, 300 series

Typical Installation:

The Zurn 38-740F can be installed in the horizontal or vertical position on carbonated beverage dispensing systems as well as non-carbonated systems. Under certain conditions the Wilkins 38-740F 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.

Standards Compliance:

ASSE Listed 1022; Certified to NSF/ANSI 372 by IAPMO R&T (Less than 0.25% weighted average lead content)

Features & Benefits:

• Backflow Prevention Protection: Dual check valve with vent prevents CO2 gas and carbonated water from contaminating potable water supply lines.
• Durable Stainless Steel Construction: 300 series stainless steel body, tailpieces, springs, and strainer screen provide long-lasting corrosion resistance and reliability.
• Integral Strainer Protection: Built-in stainless steel strainer screen prevents debris from fouling check valves, reducing maintenance requirements.
• Flexible Installation Options: Can be installed in horizontal or vertical positions with FNPT threaded connections for versatile beverage system applications.

FAQ

Q: Can the Zurn 38-740F be used with both carbonated and non-carbonated beverage systems?

A: Yes, the 38-740F is designed for installation on both carbonated and non-carbonated beverage dispensing systems to prevent backflow contamination.

Q: What type of tubing should be used downstream of the backflow preventer?

A: Copper tubing shall not be used downstream of the Model 740. Alternative materials compatible with CO2 and carbonated water must be used.

Q: What is the minimum working water pressure required for proper operation?

A: The minimum working water pressure for the 38-740F is 10 PSI, with a maximum working water pressure of 200 PSI.

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