WATTS RK-D-4200 Backflow Check Deringer Magnum 737733033721 2ND

( Brand: Watts ), ( Manufacturer Part Number: RK-D-4200 ), ( Part Type: Check ), ( Country Of Origin: United States ), ( UPC: 737733033721 )

Review WATTS Backflow Direct 2nd Check Assembly Deringer Magnum

The Watts RK-D-4200 Backflow Preventer with 2nd Check Deringer Magnum is a high-performing and reliable water safety device, specifically designed to protect your property and potable water supply from backflow contamination. This model is part of Watts' RPZ (Reduced Pressure Zone) product line, which is recognized for its robust design and superior functionality.

The Watts RK-D-4200 is a double check backflow preventer, meaning it has two independently acting check valves. The first check valve, located at the downstream side, prevents backflow from entering your drinking water supply when the water pressure drops. The second check valve, located at the upstream side, prevents backflow from entering your property when the water pressure rises. The 2nd check deringer magnum is a test port that allows for easy and convenient testing of the device, ensuring it is functioning properly and protecting your water supply.

The RK-D-4200 is constructed from heavy-duty materials, including brass bodies and stainless steel springs, making it corrosion-resistant and capable of withstanding the demands of various water conditions. The device is also designed with a testable air gap, which helps maintain a positive pressure in the device and prevents water from entering the body when not in use.

This backflow preventer is suitable for residential and commercial applications with water services up to 2 inches (50mm) in diameter. It is also certified by the American Water Works Association (AWWA) and meets the requirements of the US Environmental Protection Agency (EPA) and the National Sanitation Foundation (NSF).

Installation of the Watts RK-D-4200 is a straightforward process, and it comes with clear installation instructions and all necessary components, including test cocks and an air gap fitting. The device also features a drain plug at the bottom for easy drainage during installation or maintenance.

Overall, the Watts RK-D-4200 Backflow Preventer with 2nd Check Deringer Magnum is an essential water safety device that provides peace of mind and protection against potential backflow contamination. Its robust design, ease of use, and compliance with industry standards make it a reliable and effective solution for safeguarding your water supply.

The Watts RK-D-4200 Backflow Preventer with 2nd Check Deringer Magnum is a crucial plumbing component designed to prevent contaminated water from flowing back into the potable water supply. This device is particularly important in areas where backflow is a common concern, such as irrigation systems and fire protection systems. Here are some pros and cons of investing in this product:

1. Certified and Reliable: The Watts RK-D-4200 Backflow Preventer with 2nd Check Deringer Magnum is certified by various organizations, including the American Water Works Association (AWWA) and the National Sanitation Foundation International (NSF). This certification ensures that the product meets industry standards and is reliable.

2. Easy Installation: The device comes with a user-friendly design, making it relatively easy to install for homeowners or professionals. It also includes a built-in test port that simplifies the testing process.

3. Robust Construction: The Watts RK-D-4200 Backflow Preventer with 2nd Check Deringer Magnum is made of heavy-duty materials, making it durable and capable of withstanding the rigors of regular use.

4. Double Protection: The 2nd Check Deringer Magnum feature provides an additional layer of protection against backflow, ensuring that the potable water supply remains safe and contamination-free.

1. Expensive: Compared to other backflow preventers in the market, the Watts RK-D-4200 Backflow Preventer with 2nd Check Deringer Magnum is relatively expensive. This price tag might be a deterrent for some homeowners.

2. Complex Design: While the installation process is relatively straightforward, the device's complex design might require professional assistance for some homeowners.

3. Regular Maintenance: This backflow preventer requires regular maintenance to ensure optimal performance. Failure to maintain the device could result in contamination of the potable water supply.

The Watts RK-D-4200 Backflow Preventer with 2nd Check Deringer Magnum is a reliable and effective solution for preventing backflow in residential and commercial settings. Its certification, robust construction, and double protection features make it a worthwhile investment for those who prioritize water safety. However, its high price tag and complex design might be a deterrent for some homeowners. Ultimately, the decision to invest in this product depends on individual priorities, budget, and plumbing expertise.

If water safety is a top priority, and budget is not a significant concern, the Watts RK-D-4200 Backflow Preventer with 2nd Check Deringer Magnum is an excellent investment. For those with limited plumbing expertise or a tighter budget, there are other backflow preventers on the market that might be more suitable. It's essential to consult a professional plumber to determine the best option based on individual circumstances.

Details:

Packaging Condition Details: Open manufacture packaging. Manufacturer: watts : Backflow Direct RK-D-4200 2nd Check Assembly fits Deringer, Magnum Condition Notes: Open manufacture packaging. If items are paid for separately, they will note eligible the combined shipping discount. Details: MPN: Not Found.

Pickup Location: 634 N. This is in addition to the sales price of item and any shipping charges. Country of Origin: USA.

part #: rkd4200 prices

• $124.99-$324.95

specifications indusfir:

• brand: Watts
• mpn: Rk-d-4200
• part type: Check
• country of origin: United States
• upc: 737733033721

payments indusfir:

• wallet: Google-pay
• other
• credit card: Discover

seller indusfir:

• city: Salt Lake City, Utah
• # reviews: 704953
• rating: 99.7%

shipping indusfir:

• service: UPS Ground, FedEx Ground / FedEx Home Delivery, USPS Priority Mail
• class: Standard, Expedited
• type: Calculated
• transit: 3-7 Days
• carrier: UPS, FedEx, USPS
• cost: $9.76

returns indusfir:

• time: 30 Days
• paid by: Buyer
• method: Money back
• policy: Returns Accepted

general indusfir:

• Facility Maintenance Safety > Fire Protection Equipment > Other Fire Protection Equipment
• condition: New Open box

offer indusfir:

• options: Ship-to-home
• sold: 0
• availability: In Stock
• started: December 19, 2025
• quantity: 1

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