Please ensure Javascript is enabled for purposes of website accessibility

We are closed on Friday, July 4th, 2025 for Independence Day weekend and reopening Monday July 7th, 2025. Enjoy and be safe.

  • Sign In
  • Create an Account

Need Help?   Email:

Toggle Nav
Cart Icon Cart
Search
We ship to most places in continental USA
Chat with us
Need help
Our Locations

Apollo 4A4A33AM, 4A-400, 1/2", Dual Check Valve with Atmospheric Port

SKU
4A4A33AM

In Stock. Ships in 1-7 Business Days.

Click Here for Ground Shipping Cost & Transit Time
Retail : $97.94 - $19.59 =
$78.35 You Save (20%)

  • Maximum Working Pressure: 175 PSI

  • Inlet Temperature Range: 33 °F – 210 °F

  • Maximum Back-pressure Temp: 250 °F

  • Product Series: 4A-400

  • Material: Brass

- +

  • Maximum Working Pressure: 175 PSI

  • Inlet Temperature Range: 33 °F – 210 °F

  • Maximum Back-pressure Temp: 250 °F

  • Product Series: 4A-400

  • Material: Brass

main product photo

Product details

Apollo 4A4A33AM, 4A-400, 1/2" FNPT Dual Check Valve with Atmospheric Port

The Apollo® Model DCAP4A Dual Check with Atmospheric Port is designed to protect residential and commercial water supply lines from back-siphonage or backpressure of non-potable/non-hazardous substances. An intermediate atmospheric vent provides protection from backflow conditions.

Product Features

  • Low pressure loss

  • Corrosion resistant

  • Independently acting check valves

  • Easy to install and repair with built-in strainer

  • Suitable for hot or cold water service

Apollo
See All Apollo Products

Specification Sheet

Product Specifications
Basic Information
MPN ? Manufacturer Part Number 4A4A33AM
UPC / GTIN 670750336683
Manufacturer Apollo
Series ? A manufacturer's grouping of items that match, coordinate, or complement each other. 4A-400 Series
Dimensions and Measurements
Width (Inches) ? The horizontal measurement from left to right, measured in inches. 4.1"
Weight ? Weight 1.31
Characteristics and Features
Material ? The material(s) used in the construction of the product. Brass
Valve PSI 175 Max PSI
More Like This
More from Apollo
  1. Apollo 4ALF204A2F, RPLF4A, 3/4", Bronze, Backflow Preventer, Reduced Pressure Zone (RPZ) Assembly with Ball Valves, Lead Free
    Apollo 4ALF204A2F, RPLF4A, 3/4", Bronze, Backflow Preventer, Reduced Pressure Zone (RPZ) Assembly with Ball Valves, Lead Free
    Retail : $678.86 - $135.77 =
    $543.09 You Save (20%)
    Add to Compare
  2. Apollo 6GA110B1LFA 611F-LFA Gate Valve, 3", Flange, 125 lb, Cast Iron Body, Handwheel Actuator, Domestic
    Apollo 6GA110B1LFA 611F-LFA Gate Valve, 3", Flange, 125 lb, Cast Iron Body, Handwheel Actuator, Domestic
    Retail : $709.78 - $141.96 =
    $567.82 You Save (20%)
    Add to Compare
  3. Apollo 18C40230 18C-400 Series 3/4" MNPT X 3/4" FNPT 105 Input MBtu Temperature and Pressure Relief Valve with 3" Probe 150 PSI
    Apollo 18C40230 18C-400 Series 3/4" MNPT X 3/4" FNPT 105 Input MBtu Temperature and Pressure Relief Valve with 3" Probe 150 PSI
    Retail : $24.54 - $4.91 =
    $19.63 You Save (20%)
    Add to Compare
  4. Apollo 404A33AM 1/2" Bronze Dual Check with Atmospheric Vent with FNPT Connection
    Apollo 404A33AM 1/2" Bronze Dual Check with Atmospheric Vent with FNPT Connection
    Retail : $140.08 - $46.23 =
    $93.85 You Save (33%)
    Add to Compare


By using this site you agree to our Terms, Conditions of Use and Privacy Statement © 2025 AF Supply Corp. All Rights Reserved.