hours left for
same day shipping

Conbraco 4A-500 Freeze Resistant PVB Backflow Preventer 1 in. FPT | CDC4A-505-A2F

Out of stock
Free Shipping on Orders over $149
Sales Price $68.25 Our Price $119.70 You save 43%

Conbraco 4A-505-A2F 1 in. Freeze Resistant PVB Backflow Preventer

  • Conbraco 4A-500 Freeze Resistant Backflow Preventer
  • Female Pipe Thread
  • 1 inch Pressure Vacuum Breaker

Features & Benefits

The Apollo 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 ball valves with stainless steel handles and nuts as standard and carries the five-year Apollo 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 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

Product Details

  • ASSE 1020 - (1/2" - 2")
  • CSA B.64.1.2 - (1/2" - 2")
  • Maximum Operating Pressure 150 psi
  • Temperature Range 33°F 140°F
  • 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


Irrigation systems supplied by domestic or private potable water systems are considered to be a potential pollution hazard to the water supply. These systems must include protection to prevent possible backflow of irrigation water into the potable water supply.

Federal law requires a proper backflow device to be installed on any watering system to prevent contamination of the supply; whether it be pump or city water. Check your local water authority for installation requirements & codes. In many rural areas; specific requirements for landscape irrigation systems may not be covered in local plumbing codes and/or enforcement may be limited. HOWEVER...limitation in local authority does not alter the basic requirement for protection of the potable water supply.

Dimensions (in.)
Ordering No.SizeABCWt.(lb.)
4A503021/2"4 1/23 3/47 1/43.2
4A504023/4"4 3/44 1/87 5/83.8
4A505021"5 3/84 5/88 3/85.2
4A506021 1/4"7 3/85 3/410 1/49.1
4A507021 1/2"7 1/25 7/810 3/812.5
4A508022"8 7/86 3/411 7/821.0
1 in.
5 Years
Test Cocks:
Stainless Steel
Temperature Range:
33F to 180F
Hydrostatic Test Pressure:
300 PSI
Advance Features:
Freeze Resistant
Main Valve Body Materials:
Max Working Pressure:
150 PSI
Lead Free:
Not Lead Free
Manual (1.55 MB)
Specifications (161.72 kB)
We found other products you might like!