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Watts Reduced Pressure Zone Backflow Preventer, Cast Iron, Watts 909 Series, Flanged Connection - 2 1/2 DLF909-OSY

Marsoni M251S
Sale price$1881.72
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Watts Reduced Pressure Zone Backflow Preventer, Cast Iron, Watts 909 Series, Flanged Connection - 2 1/2 DLF909-OSYReduced Pressure Zone Backflow Preventer; Series: Watts 909; Size: 2 1 2 in; Connection: Flanged; Body Material: Cast Iron; Temp. Range: 33 Degrees to 110 Degrees F; Max. Temp.: 110 Degrees F; Max. Pressure: 175 psi; Width: 24 in; Length: 46 in; Standards: ASSE 1013, AWWA C 511 92, CSA B64. 4
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
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4.4 ★★★★★
Based on 1073 reviews
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Verified Purchase
Frank from Baltimore
Louisville, US
★★★★★ 5
Well made, a solid connection.
Size: 6 Pairs / 12 pcs
I liked them. They really lock down on the speaker wire to make a firm connection. They seem well made and are easy to install. My system sounds great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2026
M
Verified Purchase
Micky
Louisville, US
★★★★★ 5
Works as intended
Size: 12 Pairs / 24 pcs
These banana plugs are quite easy to use, and securely connected my speaker cables to the receiver. They have a quality feel as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 27, 2025
E
Verified Purchase
Eric Doka
Omaha, US
★★★★★ 5
Solid product
Size: 12 Pairs / 24 pcs
High quality. Good connectivity.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
M
Verified Purchase
Matt B.
Massapequa, US
★★★★★ 1
Tips broke in the binding post
Size: 12 Pairs / 24 pcs, Size: 12 Pairs / 24 pcs
UPDATE: Two tips broke off when unplugging them from the binding post and are now lodged in. Inexcusable and an utterly poor product. Solid connection in the binding post with no wobble or wiggle. They require some force to insert into the binding post, but once they're in they remain snug. I also tried removing and reinserting a few times and the connection remained solid. I've used other plugs in the past that have a softer tip and easily deform after one or two insertions. These do not have that issue.
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Reviewed in the United States on January 11, 2026
D
Verified Purchase
Dane W.
Port Orchard, US
★★★★★ 5
Great plugs
Size: 2 Pairs / 4 pcs
These are great plugs! Worked like it should!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 26, 2024

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