Backflow Direct

Deringer 20 Double Check Backflow Valve Assembly by Viking

Name: Deringer 20 Double Check Backflow Valve Assembly by Viking
Brand: Backflow Direct
Price: 3663.81 USD
Availability: InStock

Deringer 20 Double Check Backflow Valve Assembly by Viking

Product code: 20DC-0200

$3,663.81

~~$2,491.39~~ $3,663.81

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Description

Technical Specifications
The Viking Deringer 20 Double Check Backflow Prevention Valve Assembly is constructed with a main body of ductile iron conforming to ASTM A536 standards, providing outstanding mechanical strength and resistance to corrosion. Internal components, including springs and fasteners, are fabricated from 300-series stainless steel, ensuring longevity and consistent operation within aggressive fire protection environments. The valve features precision-engineered check modules made of high-strength thermoplastics, engineered for minimal wear and smooth sealing action. The sealing surfaces utilize EPDM elastomer discs, which are reversible and replaceable to sustain a positive seal and prevent backflow with minimal maintenance requirements.

Regulatory Compliance
This assembly is UL Listed to UL 1469 for fire service water control valves, establishing compliance with recognized safety and performance criteria. It also holds FM Approval, affirming suitability for use in fire protection systems according to Factory Mutual’s rigorous testing protocols. The Viking Deringer 20 meets ASSE 1015 standards for double check valve backflow preventers and fully aligns with American Water Works Association’s AWWA C510 specification. Its compliance supports adherence to NFPA 13 (Installation of Sprinkler Systems) and NFPA 24 (Installation of Private Fire Service Mains and Their Appurtenances), which mandate reliable backflow prevention in fire sprinkler system design and maintenance.

Operational Compatibility
Engineered for fire protection systems operating within a working pressure rating of up to 175 PSI (12.1 bar), this valve assembly supports robust demand scenarios without compromising performance. It accommodates common commercial fire sprinkler piping connections, with availability in flanged configurations meeting ANSI B16.1 standards. Its compact form factor and configuration offer flexibility for both horizontal and vertical installation orientations, optimizing use in mechanical rooms and confined spaces. The valve’s operational temperature range extends from 33°F to 140°F (0.5°C to 60°C), ensuring functionality across typical environmental conditions encountered in fire protection service.

Use Cases and Application Insights
The Viking Deringer 20 is tailored for commercial and industrial fire sprinkler systems requiring low-maintenance, reliable backflow prevention to safeguard potable water supplies from contamination. Its double check valve mechanism mitigates risk in non-health hazard environments where low to moderate hazard pollutants must be blocked. Fire protection engineers and system installers benefit from its straightforward integration with existing piping infrastructure, reducing retrofit complexity. The assembly’s design minimizes pressure loss, preserving system flow efficiency critical during fire events. Installation in both underground vaults and mechanical rooms is supported by corrosion-resistant materials and epoxy coatings, extending service life and reducing total cost of ownership.

Unique Advantages Over Alternatives
Unlike generic assemblies, the Viking Deringer 20’s blend of ductile iron construction with stainless steel internal parts and thermoplastic check modules strikes a balance between structural robustness and component replacement ease. The reversible EPDM seats reduce downtime and maintenance expenses by enabling simple in-field servicing. Its certifications from UL and FM provide assurance of compliance that supports regulatory inspections and insurance requirements. The valve assembly’s compatibility with NFPA mandates ensures it fits seamlessly within fire protection system lifecycle management, including inspection, testing, and preventive maintenance programs. This precision-engineered design reduces the risk of backflow-related system failures in mission-critical fire safety applications.

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Product Details

Technical Specifications
The Viking Deringer 20 Double Check Backflow Prevention Valve Assembly is constructed with a main body of ductile iron conforming to ASTM A536 standards, providing outstanding mechanical strength and resistance to corrosion. Internal components, including springs and fasteners, are fabricated from 300-series stainless steel, ensuring longevity and consisten...

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Frequently Asked Questions

The Fire Protection Parts Difference: Your Specialized Partner for Critical Components. Call us (866) 906-1526.

At Fire Protection Parts, we understand that maintaining effective fire suppression systems requires readily available, high-quality components. We are not a general supplier; our exclusive focus is on fire protection parts, which allows us to offer unparalleled expertise and a comprehensive inventory in this vital niche.

Why Choose Fire Protection Parts?
Unwavering Product Specialization: Our deep focus on fire sprinkler system components, and specific types of suppression system valves ensures our knowledge and resources are entirely dedicated to your systems' intricate needs.

Exceptional Customer Experience: Customers consistently praise our great communication, excellent service, and helpful support. We prioritize clear and timely interactions to meet your needs efficiently.

Streamlined Online Platform: Our website, Fireparts.com, is well-organized and easy-to-navigate, simplifying procurement. Find the exact parts you need quickly with detailed information and an efficient ordering process.

Reliability and Speed: Timely delivery is critical. We are committed to prompt and reliable shipping, ensuring you receive necessary parts quickly for scheduled maintenance or urgent repairs.

Dedicated Technical Support: Our team offers knowledgeable technical support to assist with part identification, troubleshooting, and informed decision-making.

Choose Fire Protection Parts as your partner. We deliver specialized products with exceptional service, technical expertise, and reliable speed, dedicated to being your trusted source for all your fire protection needs.

Ordering and Shipping Information

We strive to make your ordering process seamless and ensure your critical fire protection components are delivered promptly.

How to order

Order efficiently via our user-friendly website, Fireparts.com. Simply add products to your cart and proceed to our secure checkout. Our knowledgeable support team is available if you need assistance.

Shipping & Transit
Carriers: We primarily use reliable carriers like UPS and FedEx. For larger, heavier items, we utilize LTL freight carriers (e.g., FedEx Freight, R & L).

Origin & Handling: Most orders ship from our manufacturer's warehouse in Chicago, IL or warehouse near you. Orders are typically processed within 1-2 business days (M-F), with a 3:00 PM CST cut-off.

Transit Times (US): Standard transit is generally 2-3 business days to all US destinations, resulting in an estimated total delivery time of 2-4 business days from placement.

Free Shipping: We offer free standard ground shipping on orders in stock totaling $1,100.00 or more within the contiguous United States via FedEx Ground.

Expedited Options: Next-day and two-day air services are available for urgent needs. Contact us for quotes and availability.

International: We ship to the US, Canada, Mexico, and most international destinations. Allow 3-5+ additional business days for processing. Customers are responsible for all duties and taxes.

HAZMAT: Certain items (CPVC, fire extinguishers, etc.) cannot ship via USPS or air and may incur special fees.

Important Note for Freight (LTL)
Thoroughly inspect all LTL shipments for damage before accepting delivery. If damage is present, refuse the delivery and contact us immediately to arrange a replacement.

Once shipped, you will receive an email with a tracking number. All shipping times are estimates provided by the carriers and are not guaranteed.

Our Return Policy

Effective: April 30, 2025

Your satisfaction is important to Fire Protection Parts. Please review our policy for returns.

General Returns
We accept returns of most new, unused, and resalable items in original packaging within 30 days of receipt. A valid proof of purchase is required.

Initiation: Contact us at info@fireprotectionparts.net to start a return and obtain a Return Merchandise Authorization (RMA) number.

Shipping: The customer is responsible for all return shipping costs to: Fire Protection Parts Returns, 2135 City Gate Ln #3018, Naperville, IL, 60563.

Restocking Fee: A 25% restocking fee will be applied to all eligible returns.

Return and Refund Process
Request RMA: Email info@fireprotectionparts.net.

Package Securely: Include the RMA number clearly inside the package.

Refunds: Once inspected, refunds (less the 25% restocking fee and original shipping) will be credited to your original payment method within 14 business days.

Exceptions
Defective/Damaged Items: Contact us immediately upon receipt for instructions.

Exchanges: Place a new, separate order for the desired item and return the original for a refund (subject to terms).

Special Order Items: These are non-returnable and non-refundable unless the manufacturer accepts the return.

All products are subject to the manufacturer's warranty, not direct warranties from Fire Protection Parts. All sales are governed by our Standard Terms and Conditions of Sale.

Installation Assistance

While Fire Protection Parts specializes in providing high-quality fire protection components, we understand that proper installation is crucial for the effectiveness and safety of these systems.

For professional installation services across the United States, we recommend our trusted partner: Fire & Life Safety Consultants.

As a nationwide fire protection contractor, Fire & Life Safety Consultants offers comprehensive installation services for a wide range of fire protection systems.

To inquire about installation services, please:

Visit their website: www.fireandlifesafety.net to learn more about their services and coverage or call (800) 976-2489.

Email job information: Send the details of your installation needs to info@fireprotectionparts.net, and we will forward your inquiry to the team at Fire & Life Safety Consultants.

Please note that while we facilitate this connection, all installation services and agreements will be directly between you and Fire & Life Safety Consultants.

Technical Support

At Fire Protection Parts, we're committed to providing you with the expertise you need. If you require technical assistance with product selection, troubleshooting, or any other inquiries, our knowledgeable support team is ready to help.

Please call our experts directly at (866) 906-1526 for immediate assistance.