Skip to content Skip to navigation menu
If you update your home branch it may affect items currently in your cart.


$466.09 / Each

Log in to see your price
Special Order Only.
This item is not stocked nearby. If you need this item now, you can Check In Stock items at Other Stores in your expanded area, or contact your branch at (770)-442-8881 to place a special order.
Pick-Up, Delivery, or Shipping
Select at Cart
Conveniently pick-up your items from your branch
Business days are Monday through Friday
Same day pick-up available for some orders
Branch pick-up is always free
Orders can be delivered directly to your location
Business days are Monday through Friday
Next day delivery available for most orders
Industry low delivery rates for all orders
Orders ship within the next business day
Business days are Monday through Friday
Shipments typically take 1-3 days of transit
Orders over $149.00 ship free
Contact Your Branch
Use the Apollo Reduced Pressure Backflow Preventer 4ALF Series 1 in. Bronze to prevent the backflow of polluted water into the potable water supply to avoid health hazards. It is built of heavy-duty materials, making it fit for long-term use. Featuring union ball valves, this vacuum breaker allows convenient adjustment of water flow. Its test cocks let you conduct testing easily for reliable operation.
  • Built of heavy-duty material for durability
  • Union ball valves for easy adjustment of water flow
  • Modular design for easy maintenance and inspection
  • Test cocks ensures easy testing
Backflow Preventer
4ALF Series
Pressure Rating
150 PSI
Connection Size
1 in.
Body Material
Brand Name

Prices may vary from branch to branch and online. Branch is not responsible for the errors or omissions in pricing and quantity. Suppliers of the products listed on this Web site are subject to change at any time. While the individuals and entities responsible for this catalog attempt to provide accurate supplier information, for these reasons and others, the suppliers noted may not be the supplier of the product ultimately sold by SiteOne or distributors of products.