• 3" DOUBLE CHECK ASSEMBLY W/GROOVED BUTTERFLY - Fire Protection Parts
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Ames Backflows

10" Double Check Backflow Preventor Valve With OS and Y Bypass for Fire Protection

10" Double Check Backflow Preventor Valve With OS and Y Bypass for Fire Protection

Product code: C200NOS&Y-1000

$32,638.11
$39,165.73 $32,638.11
16% OFF

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Description

Technical Specifications (Material Focus)
The 10" Double Check Assembly with OS&Y valves and bypass line ("Y") is engineered for robust performance in fire protection and potable water systems requiring high reliability. The main body is constructed of fusion-bonded epoxy-coated ductile iron conforming to ASTM A536, ensuring corrosion resistance and mechanical strength for subterranean or indoor mechanical room installations. Internal components, including springs and fasteners, are fabricated from 300-series stainless steel to resist corrosion and maintain functional integrity over extended service life. The check valve modules utilize glass-filled Noryl™ or an equivalent thermoplastic to provide impact resistance and dimensional stability. EPDM elastomer discs serve as reversible and replaceable seats, ensuring a positive, leak-free seal under varying pressure differentials.

Regulatory Compliance
This assembly complies with key regulatory standards critical for backflow prevention and fire safety systems:

  • UL Listed: Certified to UL 1469, meeting stringent fire service water control valve requirements
  • FM Approved: Factory Mutual approval confirming suitability for fire protection applications
  • ASSE 1015: Adheres to American Society of Sanitary Engineering standards for double check valve assemblies
  • AWWA C510: Conforms with American Water Works Association standards for double check valve assemblies used in potable water systems
Additionally, it supports compliance with NFPA 13 and NFPA 25, facilitating standardized installation and maintenance practices under fire sprinkler system codes.

Operational Compatibility
Rated for a working pressure up to 175 PSI (12.1 bar), this assembly supports a broad range of commercial and residential water supply conditions. It is compatible with flanged (ANSI B16.1) and grooved end connections per AWWA C606, enabling integration into diverse piping layouts. The inclusion of OS&Y (Outside Screw and Yoke) gate valves on both inlet and outlet simplifies flow isolation and maintenance procedures. The assembly’s bypass "Y" configuration permits system testing without service disruption, a critical feature for compliance with local backflow testing regulations. It accommodates installations where horizontal or vertical upward flow orientation is required. Operating temperatures range from 33°F to 140°F (0.5°C to 60°C), covering typical environmental conditions encountered in fire protection and potable water systems.

This 10" Double Check Assembly excels in preventing backflow contamination risks in potable water supplies where non-health hazard conditions are present. Its durable construction and standardized components make it particularly suited for commercial fire protection systems requiring frequent inspection and testing. The OS&Y valves allow clear visual indication of valve operation status, minimizing maintenance errors. The bypass "Y" enables differential pressure testing in compliance with regulatory mandates without interrupting water service, critical in high-demand facilities.

Compared to single check valves or less robust assemblies, this model addresses the need for redundancy and testability in fire protection setups while mitigating pressure loss. It is an essential component for plumbing engineers, fire protection contractors, and facility managers who require dependable backflow prevention substantiated by established UL and FM certifications.

For installers, the 10" Double Check Assembly provides straightforward integration with common piping standards and tools, reducing installation time and long-term maintenance costs. Its materials and design promote longevity even in aggressive underground environments or mechanical rooms where water quality and system reliability are paramount.

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Product Details


Technical Specifications (Material Focus)
The 10" Double Check Assembly with OS&Y valves and bypass line ("Y") is engineered for robust performance in fire protection and potable water systems requiring high reliability. The main body is constructed of fusion-bonded epoxy-coated ductile iron conforming to ASTM A536, ensuring corrosion resistance and mechanical strength for subt...
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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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