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Conbraco 4A-500 Freeze Resistant PVB Backflow Preventer 3/4 in. FPT | CDC4A-504-A2F

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Sales Price $96.80 Our Price $142.95 You save 32%

Conbraco 4A-500 Freeze Resistant PVB Backflow Preventer 3/4 in. FPT

  • Size: 3/4 in.
  • Connection: Female Pipe Thread
  • Max Working Pressure: 150 PSI

Features & Benefits

The Apollo ½ Pressure Vacuum Breakers prevent contamination of the potable water supply due to back-siphonage. An integral freeze protection relief valve serves to reduce the possibility of damage due to intermittent freezing conditions.

The modular check valve cartridge provides a captured spring, a replaceable seat and a reversal silicone seat disc. This Made in America assembly features Apollo ½ ball valves with stainless steel handles and nuts as standard and carries the five-year Apollo ½ factory warranty.

  • Low pressure loss documented by independent approval agencies
  • Built-in freeze resistance feature standard
  • Easily removable modular check valve cartridge
  • Captured stainless steel springs
  • Apollo ½ ball valves w/ SS handles & nuts standard
  • Test cocks located for easy draining
  • Corrosion resistant
  • No special tools required
  • Unique canopy detachment
  • Designed, cast, machined, assembled and tested IN THE USA
  • Conbraco Industries, Inc. continues to operate as Apollo Valves

Product Details

Approvals - Standards

  • ASSE 1020 - (1/2" ½ 2")
  • CSA B.64.1.2 - (1/2" ½ 2")

Performance Rating

  • Maximum Operating Pressure 150 psi
  • Temperature Range 33 ½ F ½ 140 ½F

Material Specifications

  • Part Name: Material
  • Body, Ball Valves, Test Cocks: Bronze C84400 or C89836
  • Canopy: UV-Resistant ABS
  • Bonnet: Glass-Filled PPO
  • Check Valve Cartridge: Glass-Filled PPO
  • Springs: Stainless Steel
  • Seat Discs: Chloramine-resistant Silicone
  • Float: Glass-Filled Polypropylene
  • O-rings: Chloramine-resistant EPDM

To winterize the valve:

  1.  Secure the water source at a location that will not freeze.
  2. Open #1 and #2 test cocks to drain the PVB.
  3.  Place the inlet and outlet isolation ball valves in the halfway open/shut position.
  4. If possible, blow the lines clear with pressurized air.
More Information
Brand Conbraco
Test Cocks 2 MALE
Max Working Pressure 150 PSI
Hydrostatic Test Pressure 300 PSI
Temperature Range 33F to 180F
Main Valve Body Materials Bronze
Elastomers Silicone
Springs Stainless Steel
Advance Features Freeze Resistant
Warranty 5 Years
Size 3/4 in.
Connection FPT
Lead Free Not Lead Free
Manual (1.55 MB)
Specifications (161.72 kB)
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