1/2" Bronze Backflow Preventer Check Valve, Lead-Free

$59.73
- +
In stock
5 Available At My Branch
17 Available At All US Supply Locations
Brand
Apollo Valves
Part Number
4ALF3A33A
SKU
1944964

Apollo® Lead-Free Dual Check Valve – Dependable Backflow Protection for Potable Water Systems

The Apollo® Lead-Free Dual Check Valve is engineered to protect potable water lines from backflow due to backpressure or backsiphonage. Featuring two independently operating check valves housed within a compact, corrosion-resistant body, this valve delivers reliable protection in residential and light commercial installations.

Manufactured from lead-free bronze and compliant with current health and safety standards, the valve is designed for horizontal installation in supply lines where dual check protection is permitted by code. Its modular construction makes maintenance straightforward and helps extend service life.

Contractor-Approved Features

  • Lead-Free Certified – Complies with NSF/ANSI 372 for use in drinking water systems.
  • Independent Dual Checks – Two internally housed, spring-loaded checks operate separately to ensure system security.
  • Low Head Loss – Engineered to preserve pressure integrity throughout the system.
  • Replaceable Internal Modules – Field-serviceable check cartridges for simplified repair or replacement.
  • Corrosion-Resistant Body – Built from durable bronze and stainless steel components for long-term performance.
  • Compact Profile – Ideal for installations in confined or retrofit locations with limited clearance.
  • Standard Lay Lengths – Ensures quick compatibility with existing system dimensions.

Technical Specifications

  • Valve Type: Dual check, non-testable
  • Material: Lead-free bronze body with stainless steel internal springs
  • Size: 1/2"
  • Pressure Rating: 175 PSI maximum working pressure
  • Temperature Range: 33°F – 180°F
  • Certifications: ASSE 1024, NSF/ANSI 61 & 372

Installation Considerations

This valve is suitable for use on potable water lines downstream of the meter. Installation must comply with local plumbing and cross-connection control codes. While no special tools are required, proper installation procedures—including alignment, flushing, and system testing—should be followed to ensure long-term function. A licensed plumber is recommended for code-compliant installations and annual inspections if required by local jurisdictions.

Built for Reliability, Designed for Ease

  • Compact & Efficient – Perfect for residential plumbing applications where space is limited.
  • Service-Friendly – Internal check cartridges can be accessed and replaced without removing the entire assembly.
  • Trusted by Trade Professionals – Backed by Apollo’s reputation for quality and code-compliant engineering.

Protect Potable Systems with Confidence

With the Apollo® Lead-Free Dual Check Valve, professionals can count on consistent performance, code compliance, and long-term protection against backflow incidents. It’s a smart solution for contractors who value efficient installs and dependable safeguards in potable water systems.

Specifications

Specifications
Weight 1.430000
Country of Manufacture China
Height 2.35
Length 5.75
Width 2.35
Recommended 3098
Brand Apollo Valves
Manufacturer Part Number 4ALF3A33A
Sub Type Dual Check Valve
Warranty 5 year
Body Material Bronze
Disc Material Buna-N
Domestic/Import Domestic
End Style FNPT
Media Water
Nominal Size 1/2 in
Port Type Full
Pressure Rating 175 PSI
Trim Material Buna-N
Item Returns This item can be returned
Features