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Camco 23303 1/2" Back-Flow Preventer - Lead Free

4.1 out of 5 stars 67 customer reviews
| 10 answered questions

Price: $5.96 & FREE Shipping on orders over $49. Details
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  • Brass check valves for use with pressure water systems.
  • Allows water to only flow in one direction
  • Prevents backflow
  • Male x Female NPT
  • Compliant with all federal and state level low lead laws. CSA Low Lead Content Certified to NSF/ANSI 372
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Frequently Bought Together

  • Camco 23303 1/2" Back-Flow Preventer - Lead Free
  • +
  • Camco 40055 Brass Water Pressure Regulator - Lead Free
  • +
  • Camco 22505 90 Degree Hose Elbow - Lead Free
Total price: $18.33
Buy the selected items together


Product Information

Technical Details

Brand Camco
Item Weight 4 ounces
Product Dimensions 5.3 x 3.2 x 0.8 inches
Item model number 23303
Manufacturer Part Number 23303
OEM Part Number 23303

Additional Information

ASIN B000EDUTN6
Customer Reviews
4.1 out of 5 stars 67 customer reviews

4.1 out of 5 stars
Best Sellers Rank #9,540 in Automotive (See top 100)
#42 in Automotive > RV Parts & Accessories > Cleaning, Storage & Maintenance
#53 in Automotive > RV Parts & Accessories > Freshwater Systems
#107 in Patio, Lawn & Garden > Gardening > Watering Equipment > Hose Connectors & Accessories > Parts & Connectors
Shipping Weight 4 ounces (View shipping rates and policies)
Date First Available September 14, 2005

Warranty & Support

Warranty, Parts:Limited 1 Year WarrantyWarranty, Labor:30-Day Warranty

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Product Description

Camco's 23303 RV 1/2" Back-Flow Preventer allows water to only flow in one direction to prevent backflow. It has a heavy-duty brass body with a stainless spring. 1/2" Male x Female NPT.

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Verified Purchase
I was quite impressed with this Camco item. I used it on my RV fresh water tank to prevent it from filling
while connected to the park water system. The check valve in the water pump is supposed to prevent
this but it didn't. (this valve was replaced two times,the pump once) Now the water tank fills only when
I open the fill valve. Great little product.
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Verified Purchase
I needed to replace a backflow preventer in an application where there was no possibility to contaminate the supply. This part fit the bill, and at a much lower price than comparable air gaps. It does not take much forward pressure to initiate the flow, and there is no backwards leakage. Good casting with quality machining.
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Verified Purchase
I had to modify this item to work with my RV. The male and female adapters are 1/2", the fittings for my RV and hose are 3/4". I added a 1/2" female to 3/4" male adapter to one and the opposite to the other end. It works as described after making those changes.
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Verified Purchase
I ordered this to prevent the draining of water back into the fresh water tank on my travel trailer. The water pump should not allow this to happen, so I wanted something to prevent it until I can obtain a replacement water pump. I was having trouble finding a reasonably-priced valve that would fit into the space I had without making troublesome space modifications. This item fit the bill perfectly and is working just like it is supposed to. Great value.
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Verified Purchase
Seems like a good product- threading is correct and it sealed well, but it doesn't actually act as a check valve. When I received it, I tested it just by blowing through it and you can blow air through both directions. I tried cleaning it which still didn't help. I installed it anyway thinking maybe it will seal low pressure water better than air, but unfortunately it didn't function as I expected.
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Verified Purchase
Made in China and it shows. The male treads on this were very poorly machined (actually managed to get a brass sliver in the thumb from it). Almost looks like galling (small bits of the threads chunked out during manufacturing). That said, I had to clean up the threads to insure it would not leak. Also, make sure you use enough Rector Seal on the threads to insure a leak proof connection. Female threads looked great. With that, the unit does not leak at the connection and it performs well.
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Verified Purchase
this back flow preventer check valve works very well for the application that I'm using it for. That is, water flowing back into my 12 volt water pump water pump in my motorhome. It seems to have taken care of the drip drip drip drip small leak that I was having at the pump head. I recommend this if you're having a backflow problem.
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Verified Purchase
looks to be all brass, other than the spring inside. I know my current model seems to have a plastic valve inside, and it developed a noise after a year of use.

will keep this on hand until the other fails to work. (or gets too noisy)
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