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CMB Industries - Febco

1" Febco 850 Double Check Assembly Backflow Preventer Device

1" Febco 850 Double Check Assembly Backflow Preventer Device

Product code: 850-0100

Regular price $811.43
Regular price $973.71 Sale price $811.43
16% OFF

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Description

The 1" Febco 850 Double Check Assembly backflow preventer is engineered specifically for low flow applications within fire protection and non-health hazard water supply systems. Its primary function is to prevent the reverse flow of potentially contaminated water from entering the potable supply, maintaining water safety and regulatory compliance in commercial and industrial installations.

Technical Specifications (Material Focus)
  • Main Body: Constructed from high-strength, fusion-bonded epoxy-coated ductile iron complying with ASTM A536, ensuring corrosion resistance and durability in underground or mechanical room environments.
  • Internal Mechanism: Incorporates 300-series stainless steel springs and fasteners to resist corrosion and maintain consistent valve operation over prolonged use.
  • Check Valves: Utilizes glass-filled Noryl™ or equivalent thermoplastic for high wear resistance and dimensional stability under variable flow conditions.
  • Seal Components: Features reversible and replaceable EPDM elastomer discs that provide a reliable seal to prevent backflow, maintaining system integrity even under fluctuating pressures.
Regulatory Compliance
  • UL Listing: Certified under UL 1469 suitable for fire service water control valves, ensuring adherence to industry fire safety standards.
  • FM Approval: Approved by Factory Mutual for use within fire protection systems, validating its suitability for life-safety applications.
  • ASSE 1015 Compliance: Meets the American Society of Sanitary Engineering standards governing backflow prevention devices, assuring potable water system protection.
  • AWWA Standards: Compliant with American Water Works Association C510 guidelines specific to backflow device performance.
Operational Compatibility
  • Pressure Rating: Rated for operating pressures up to 175 PSI (12.1 bar), accommodating most building water supply pressures without compromising performance.
  • Temperature Range: Designed for service temperatures between 33°F and 140°F (0.5°C to 60°C), suitable for standard fire protection system environments.
  • Connection Types: Available with both flanged (ANSI B16.1) and grooved (AWWA C606) end options, facilitating integration with existing pipework and system configurations.
  • Installation Orientation: Engineered for both horizontal and vertical (upward flow) installations, providing flexibility in mechanical room layouts or underground settings.

Ideal for building engineers and fire protection professionals, this assembly addresses common challenges such as ensuring code-compliant backflow prevention in low flow scenarios without causing unnecessary pressure drop. Compared to simpler check valve systems, the Febco 850's dual check design with resilient sealing elements minimizes maintenance frequency and system downtime by reliably preventing contamination ingress.

For facilities requiring stringent adherence to NFPA 13 and NFPA 25, this device includes pre-drilled test cocks enabling mandatory annual testing and differential pressure verification, streamlining compliance and inspection workflows.

In summary, the 1" Febco 850 Double Check Assembly offers a robust, code-compliant solution for protecting potable water supplies in fire protection applications with minimal pressure loss and proven durability against corrosion and wear. Its standardized connection fittings and versatile installation options make it a practical choice for new system builds or retrofit projects requiring reliable contamination control in low flow water lines.

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Product Details


The 1" Febco 850 Double Check Assembly backflow preventer is engineered specifically for low flow applications within fire protection and non-health hazard water supply systems. Its primary function is to prevent the reverse flow of potentially contaminated water from entering the potable supply, maintaining water safety and regulatory compliance in commercial and industrial installation...

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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

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.

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