3/8" Wilkins 740 Dual Check With Atmospheric Vent for Carbonated Beverage Machine

Item Number: 38-740
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$333.03
Limited Stock (6)
Estimated transit time: 2 to 5 Business Days Eligible for Express Shipping

Brand - Wilkins
  • Connection Type: 3/8" SAE J513 Flare Fitting
  • Maximum Operating Pressure: 200 PSI
  • Minimum Operating Pressure: 10 PSI
  • Maximum Water Temperature: 110°F
  • Body Material: 300 Series Stainless Steel
  • Elastomers: Silicone and Buna Nitrile (FDA Approved)
  • Integral Strainer: Prevents check fouling
  • Certifications: ASSE 1022, NSF/ANSI 372, Lead Free

Description

The Zurn Wilkins Model 740 is a 3/8 inch dual check valve with an atmospheric vent and integral strainer, specifically designed for carbonated and non-carbonated beverage dispensing systems. It prevents carbon dioxide gas or carbonated water from contaminating potable water lines, making it ideal for vending machine applications. Constructed from durable 300 series stainless steel with FDA-approved silicone and Buna Nitrile elastomers, it offers superior corrosion resistance and reliability. Key features include 200 PSI maximum working pressure, 110°F maximum temperature, and ASSE 1022 and NSF/ANSI 372 certifications ensuring lead-free compliance. The integral strainer protects internal components from debris, ensuring long-term performance.

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Connections

  • The 3/8 inch SAE J513 flare fittings on both the inlet and outlet are designed for direct connection to compatible beverage dispensing system lines, such as those found in vending machines.
  • The 1/8 inch FNPT vent port may discharge water, so ensure adequate drainage or provision to prevent property damage.

Compatibility

  • This backflow preventer is suitable for both carbonated and non-carbonated beverage dispensing systems.
  • It is crucial that copper tubing is not used downstream of the Model 740 to prevent potential issues.
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Additional Details

This 3/8 inch Zurn Wilkins Model 740 Dual Check Valve with Vent and Integral Strainer is designed for installation on carbonated and non-carbonated beverage dispensing systems. It prevents carbon dioxide (CO2) gas or carbonated water from coming into contact with the copper potable water supply line, and includes an integral strainer to prevent debris from fouling checks.

Application

  • Specifically engineered for use in carbonated beverage dispensing systems and non-carbonated beverage systems.
  • Protects potable water supply lines from contamination by CO2 gas or carbonated water.
  • Often installed in vending machine supply lines.

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
  • Features an integral stainless steel strainer screen.

Features

  • Dual check valve design with an atmospheric vent.
  • Equipped with an integral strainer to eliminate check fouling caused by debris.
  • Constructed from high-quality stainless steel for superior corrosion-resistance.
  • Can be installed in either horizontal or vertical orientations for versatility.

Important Installation Notes

  • The Model 740 may discharge water from its vent port; provisions must be made to ensure this discharge will not damage surrounding property or equipment.
  • Copper tubing shall not be used downstream of the Model 740.

Specifications

  • Inlet Connection: 3/8 inch SAE J513 Flare Fitting
  • Outlet Connection: 3/8 inch SAE J513 Flare Fitting
  • Vent Connection: 1/8 inch FNPT
  • Size: 3/8 inch
  • Maximum Working Water Pressure: 200 PSI
  • Minimum Working Water Pressure: 10 PSI
  • Maximum Working Water Temperature: 110°F

Materials

  • Main Valve Body: Stainless Steel, 300 series
  • Tailpieces & Fasteners: Stainless Steel, 300 series
  • Elastomers: Silicone, Buna Nitrile (FDA Approved)
  • Spring & Screen: Stainless Steel, 300 series
  • Strainer Screen: Stainless Steel

Dimensions & Weight

  • Length (A): 3 1/4 inches (83 mm)
  • Width (B): 1 inch (25 mm)
  • Weight: 0.3 lbs (0.14 kg)

Certificates & Approvals

  • ASSE® Listed 1022
  • Certified to NSF/ANSI 372 by IAPMO R&T (Lead Content: Less than 0.25% weighted average)
  • Lead Free

FAQs

What is the primary application of the Zurn Wilkins Model 740 backflow preventer?

The Zurn Wilkins Model 740 is designed for installation on carbonated and non-carbonated beverage dispensing systems to prevent carbon dioxide gas or carbonated water from contacting the potable water supply line.

What are the connection types for the Model 740?

This specific model, 38-740, features 3/8 inch SAE J513 flare fittings for both the inlet and outlet connections. It also has a 1/8 inch FNPT vent connection.

What materials are used in the construction of the Model 740?

The main valve body, tailpieces, fasteners, spring, and screen are all made from 300 series stainless steel. The elastomers are FDA-approved Silicone and Buna Nitrile.

Can the Model 740 be installed in any position?

Yes, the Model 740 can be installed in either horizontal or vertical orientations, offering flexibility for various setup requirements.

What are the maximum operating pressure and temperature for this device?

The Model 740 has a maximum working water pressure of 200 PSI and a maximum working water temperature of 110°F.