Price History for 1-1/2 in. 350 Double Check Backflow Preventer, Non-Potable
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1-1/2 in. 350 Double Check Backflow Preventer, Non-Potable
The 1-1/2 in. 350 Double Check Valve Assembly is used in low health hazard, non-potable water applications for protection against both back siphonage and backpressure of polluted water. A favorite for irrigatio
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Price History Chart
Recorded price history
| Date | Price |
|---|---|
| Jul 24, 2026 | $658.19 |
| Jul 22, 2026 | $691.42 |
| Jul 20, 2026 | $732.10 |
| Jul 18, 2026 | $813.44 |
| Jul 6, 2026 | $956.99 |
| Jun 26, 2026 | $658.19 |
| Jun 24, 2026 | $956.99 |
| Jun 21, 2026 | $774.34 |
| Jun 19, 2026 | $662.42 |
| Jun 16, 2026 | $774.34 |
| Jun 14, 2026 | $697.28 |
| Apr 22, 2026 | $774.34 |
| Apr 21, 2026 | $956.99 |
| Apr 20, 2026 | $774.34 |
| Feb 21, 2026 | $910.99 |
| Feb 20, 2026 | $774.34 |
| Feb 19, 2026 | $956.99 |
| Feb 16, 2026 | $774.34 |
| Jan 26, 2026 | $910.99 |
| Jan 24, 2026 | $692.35 |
| Dec 26, 2025 | $910.99 |
| Dec 19, 2025 | $665.28 |
| Dec 14, 2025 | $703.65 |
| Dec 1, 2025 | $703.65 |
| Nov 17, 2025 | $703.65 |
Analysis
1-1/2 in. 350 Double Check Backflow Preventer, Non-Potable price analysis
Price analysis for 1-1/2 in. 350 Double Check Backflow Preventer, Non-Potable at Home Depot: Today's price is $658.19. That's 6% off the MSRP of $703.65. Current price is 14% below the 90-day average of $761.43 (a $103.24 below the running mean).
- The current price of $658.19 is 6% (or $45.46) below the MSRP of $703.65.
- Current price is 14% below the 90-day average of $761.43 (a $103.24 below the running mean).
- The lowest recorded price on PriceWatchPro was $658.19 on June 26, 2026. The current listing is at this all-time low.
- The highest recorded price on PriceWatchPro was $956.99 on February 19, 2026. Today's price is $298.80 below that peak.
- 30-day trend: trending down 19.1% from $813.44 to $658.19.
- Across 24 tracked price changes, the listing has dropped 13 times with an average drop of $129.40.
- PriceWatchPro has been tracking this listing since November 17, 2025 (271 days of price history).
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