The Wilkins 38-740 is a dual check valve with vent designed for carbonated and non-carbonated beverage dispensing systems, preventing CO2 gas contact with 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:  SAE J513 flare fittings

Other Related Variants:

• 38-740F: 3/8 Inch FNPT threaded inlet and outlet connections

Materials:

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

Typical Installation:

The Zurn 38-740 can be installed in horizontal or vertical position on carbonated beverage dispensing systems as well as non-carbonated systems to prevent carbon dioxide gas or carbonated water from coming in contact with copper potable water supply lines. Under certain conditions the Zurn 38-740 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 this unit.

Standards Compliance:

ASSE Listed 1022; Certified to NSF/ANSI 372 by IAPMO R&T

Features & Benefits:

• Beverage System Protection: Prevents CO2 gas or carbonated water from contacting copper potable water supply lines in beverage dispensing applications.
• Durable Construction: Stainless steel 300 series body, tailpieces, springs, and strainer screen provide long-lasting corrosion resistance and reliability.
• Integrated Strainer: Integral stainless steel strainer prevents debris from fouling check valves, reducing maintenance requirements.
• Flexible Installation: Can be installed in horizontal or vertical position with 1/8 inch FNPT vent port for proper system drainage.

FAQ

Q: Can I use copper tubing downstream of the Wilkins 38-740?

A: No, copper tubing shall not be used downstream of the Model 38-740 to prevent CO2 gas or carbonated water from contacting copper supply lines.

Q: What is the difference between the 38-740 and 38-740F?

A: The 38-740 has SAE J513 threaded connections while the 38-740F features FNPT threaded inlet and outlet connections.

Q: What should I do about water discharge from the vent port?

A: Under certain conditions the unit may discharge water from the vent port. Provisions must be made to ensure discharge will not damage surrounding property or equipment, typically by routing to a safe drain.

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