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Ames Backflows

Ames Maxim M500Z 4-Inch RP Detector Assembly | OS&Y

Ames Maxim M500Z 4-Inch RP Detector Assembly | OS&Y

Product code: M500ZOSY-0400

In stock: 594

Regular price $9,721.99
Regular price $10,694.99 Sale price $9,721.99
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Description

Overview

The Ames Maxim M500Z 4-inch reduced-pressure detector assembly provides backflow protection against backpressure and backsiphonage for health-hazard applications on non-potable service lines. This listing specifies Z-pattern horizontal installation with OS&Y gate shutoff valves.

Two independent Link Check modules, an intermediate differential-pressure relief valve, shutoff valves and test cocks provide testable protection. A metered bypass registers leakage or unauthorized water use from the protected line. It is not an electronic fire-detection or backflow-event alarm.

Key Features & Construction

  • Type 304 Schedule 40 stainless-steel housing and sleeve with serviceable check modules.
  • 175 psi maximum working pressure; water temperature range of 33°F to 110°F.
  • Reversible silicone or EPDM check discs and stainless-steel springs, pins and fasteners.
  • Confirm bypass meter units and supplied accessories before ordering.
  • For non-potable service; not for systems providing water for human consumption.
  • Provide relief-valve discharge drainage and service clearances required by the installation instructions.

Technical Specifications

Specification Detail
Manufacturer Ames Fire & Waterworks
Model / Series Maxim M500Z
Store SKU M500ZOSY-0400
Nominal Size 4 inches
Shutoffs / Connections OS&Y gate shutoffs; external end connections: Not verified for this store SKU
Installation Pattern Z-pattern horizontal; confirm configuration-specific drawings
Maximum Working Pressure 175 psi
Water Temperature Range 33°F–110°F
Housing and Sleeve Type 304 Schedule 40 stainless steel
Check Discs Reversible silicone or EPDM
Agency Listings & Approvals Family sheet references ASSE 1047, CSA B64.4 and AWWA C511-97, with UL/FM scope for BFG and OS&Y configurations. Verify exact assembly marks and installation scope.
Box Quantity 1

Submittal & Installation Note: Verify local AHJ and water-authority requirements and consult the matching manufacturer installation instructions. Where used on a sprinkler supply, review applicable NFPA 13 installation/testing provisions and NFPA 25 inspection, testing and maintenance requirements. Product-family references do not establish compliance for every project or configuration.

Documentation: Download Ames Maxim Manufacturer Technical Data & Cut Sheet (PDF)

Shipping Information

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Total: $9,721.99

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Product Details

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Frequently Asked Questions

The Fire Protection Parts Difference: Your Specialized Partner for Critical Components. Call us (800) 976-2489.

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

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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.

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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.

Any material or equipment that is made to order or custom is non-returnable and non-refundable.

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

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Please call our experts directly at (800) 976-2489 for immediate assistance.

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