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34-350 3/4" 350 Double Check Backflow Preventer
✅ In stock
F
Grade
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Sep 20, 2026 11:33 PM · Prices & availability subject to change
Is This a Good Price on Amazon?
💤 Not a Deal- 💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
- ➡️Pricing has held fairly steady, with no strong push in either direction.
How We Scored This Deal
Price Competitiveness
0/28
Recent Value
0/22
Market Standing
0/20
Deal Strength
0/20
Momentum
0/10
📝 Product Overview
🏪 Sold by
Onylraep
📦 Fulfillment
Fulfilled by Amazon
🚚 Shipping
Free Shipping
Product Details
✓𝐃𝐞𝐭𝐚𝐜𝐡𝐚𝐛𝐥𝐞 𝐏𝐫𝐞𝐬𝐬𝐮𝐫𝐞 𝐕𝐞𝐬𝐬𝐞𝐥: The 350 double check backflow preventer features a detachable pressure vessel design, which is aimed at reducing maintenance time and costs.And is serviceable off-line
✓𝐁𝐚𝐜𝐤𝐟𝐥𝐨𝐰 𝐚𝐧𝐝 𝐁𝐚𝐜𝐤-𝐬𝐢𝐩𝐡𝐨𝐧𝐚𝐠𝐞 𝐏𝐫𝐞𝐯𝐞𝐧𝐭𝐢𝐨𝐧: The double check backflow preventer is designed to prevent siphonage and backpressure backflow. Very suitable for irrigation contractors It ensures unidirectional flow within the pipeline, making it an ideal choice for continuous pressure piping systems, cross-connections, and service line entry points.
✓𝐒𝐭𝐮𝐫𝐝𝐲 𝐚𝐧𝐝 𝐃𝐮𝐫𝐚𝐛𝐥𝐞 𝐌𝐚𝐭𝐞𝐫𝐢𝐚𝐥𝐬: The durable stainless steel and reinforced nylon construction balance longevity and practicality. Capable of withstanding harsh outdoor conditions, the detachable design ensures optimal performance even in extreme winter environments.
✓𝐄𝐚𝐬𝐲 𝐈𝐧𝐬𝐭𝐚𝐥𝐥𝐚𝐭𝐢𝐨𝐧: The 3/4" backflow preventer allows for quick and straightforward installation, simplifies in-line repairs, and supports both indoor/outdoor use as well as vertical mounting.
✓𝐒𝐚𝐟𝐞𝐭𝐲 𝐚𝐧𝐝 𝐑𝐞𝐥𝐢𝐚𝐛𝐢𝐥𝐢𝐭𝐲: The 350 Double Check Valve Assembly utilizes two check valves in series. If one valve fails to close due to malfunctions (e.g., stuck disc or seal failure), the second valve remains operational to prevent backflow, thereby ensuring enhanced system safety.
⚙️ Specifications
Material
Brass
Brand
Onylraep
Item dimensions L x W x H
12 x 4 x 3.75 inches
Exterior Finish
Stainless Steel
Inlet Connection Size
0.75 inches
Inlet Connection Type
F
Outlet Connection Type
NPT
Number of Ports
2
Outlet Connection Size
0.75 inches
Unit Count
1 Count
Brand Name
Onylraep
