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| Frequently Asked Questions - Hydrants |
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- I don’t see my hydrant listed. Do you have traffic repair kits available for other models?
View answer | | We offer traffic repair kits and extension kits for nearly any hydrant made in the last 30 years. We list only a sampling of the most popular hydrants currently in use. As with many of our products, we can only show a few of the literally hundreds of options that are available to our customers. We specialize in the hard-to-find. Call our tech support group for your hard-to-find kits. If it’s available, chances are we can get it. | |
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- What color should my hydrant be?
View answer | | Colors for hydrants as per AWWA: | | | Class AA: | Blue | 1500 gpm or greater | | Class A: | Green | 1000 to 1500 gpm | | Class B: | Orange | 500 to 1000 gpm | | Class C: | Red | Less than 500 gpm |
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- Why should I use a hydrant diffuser?
View answer | | You use a hydrant diffuser to disperse the flow coming out of the hydrant to cut down on the ground erosion around the hydrant. | |
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- Why do I have to use a discharge coefficient when I calculate my hydrant flows?
View answer | | A discharge coefficient is used in the calculation of hydrant discharge flows because there are different outlet types and each type causes a different amount of turbulence which changes the flow calculation amount. | |  | |
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- Can USABluebook get city specific custom threaded hydrant adaptors?
View answer | | Yes. Call and ask for our Hydrant Tech Support group for pricing and availability. | |
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- Why is it important to flush your hydrant system?
View answer | | Flushing helps improve the quality of the delivered water and reduces customer complaints. Flushing should be done at dead-end and low flow applications. | |
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- When do I need to use a hydrant backflow preventer?
View answer | | You need to use a hydrant backflow preventer any time you are drawing water from a hydrant that there is even a slight chance of contaminates getting back into your fresh water supply. Check you local codes for your area’s requirements. | |
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