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Caleffi Auto Fill Combo Automatic Boiler Fill Valve with Backflow Preventer, 1/2" FNPT Inlet x 1/2" FNPT Outlet
Model:
573002A
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Features
- Caleffi 573002A Features
- Water will stop at set pressure
- Connection Type: FNPT
- Connection Size: 0.5 Inches
- Caleffi Auto Fill Combo Automatic Boiler Fill Valve with Backflow Preventer Warranty:
- Parts: 1 Year
The Caleffi Auto Fill Combo Automatic Boiler Fill Valve with Backflow Preventer is used to maintain the pressure of the system stable at a set valve, automatically filling up with water as required. After installation, during the filling or topping-off phase, the water feed will stop when the set pressure is reached.
California residents see
Warning: This product can expose you to chemicals including Lead which is known to the State of California to cause Developmental Harm.
For more information go to: www.p65Warnings.ca.gov
Specifications
573002A

Overview
Product Category
Boiler Accessories
General Information
Product Category
Boiler Accessories
Valve Type
Fill
Connection Type
FNPT
Material
Brass
Performance
Maximum Operating Temperature
210 F
Dimensions
Connection Size
1/2 Inch
Product Weight
5 Pounds
Warranty Information
Parts Warranty
Parts Warranty
A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
2 Years
Reviews
(4)
Caleffi 573002A Reviews & Ratings

Quality Is Always Expensive
By Roland Sutton
Minnesota
Purchased 11/20/2024 |
Review Posted 01/22/2025
It’s a good fit, quality is excellent somewhat expensive unit but it works great
Roland Sutton Recommends This
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Rating Breakdown
5/5
5/5
5/5
4/5
Pros:
Easy To Use, I39d Buy It Again
Cons:
Expensive
Great Product
By Philip B
Pennsylvania
Review Posted 08/31/2022
Well made , solid part will last for years. Install was easy
Philip B Recommends This
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Pros:
Price, Id Buy It Again
Cons:
None

Boiler Water Autofill Valve System
By Paul S
HOT SPRINGS, South Dakota
Purchased 10/16/2020 |
Review Posted 12/18/2020
The Caleffi backflow autofill valve system has provided me with an assurance that the boiler water circulation loop is properly filled and combined with the air eliminator serves as a trouble free means to ensure that the system operates properly free of air traps.
Paul S Recommends This
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Rating Breakdown
5/5
5/5
5/5
5/5
Pros:
Easy To Use, Quiet, Reliable, High Quality
Cons:
none

Does what it should
By Steve B
IL
Review Posted 03/10/2015
Valve seems to be made well and works just like it should. Good instructions and simple adjustments.
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
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Manuals
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Caleffi Auto Fill Combo Automatic Boiler Fill Valve with Backflow Preventer, 1/2" FNPT Inlet x 1/2" FNPT Outlet


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