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Brass vacuum breaker with FNPT threads, compact cylindrical body

Apollo

Apollo 3820301 Vacuum Breaker 1/2 in FNPT Brass 125 psi

SKU CH-938B-7ZD34

Brass vacuum breaker with 1/2 in FNPT connection rated to 125 psi and 212 °F, meeting ASSE 1001-2008

  • Size1/2 in
  • Prevents backflow with ASSE 1001-2008 certified vacuum breaker
  • Withstands 125 psi maximum pressure for reliable operation
  • Handles 212 Degrees F temperature range for hot water use
  • Durable brass construction with silicone seal resists corrosion
  • Compact 1/2 in FNPT connection fits standard plumbing lines

Vacuum Breaker for Plumbing Systems

The Apollo 3820301 vacuum breaker installs on 1/2 inch FNPT connections to prevent back-siphonage in residential and commercial plumbing. Brass construction with a silicone seal handles water temperatures up to 212 degrees Fahrenheit. It meets ASSE 1001-2008 requirements for atmospheric-type breakers.

Pressure and Temperature Limits

Rated for a maximum working pressure of 125 psi, the device suits typical municipal supply lines and pump-fed systems. The silicone seal remains effective across the full 212 degree Fahrenheit temperature range. Installers must verify that system pressure and temperature stay within these boundaries.

1/2 Inch FNPT Connection Size

The single specification that determines fit is the 1/2 inch female National Pipe Thread connection. Systems using larger or smaller pipe threads, compression fittings, or press-fit joints cannot accept this breaker without adapters. Buyers needing a different connection type must select another model.

How it compares

Measured against everything we stock in Bath Accessories & Soap Dispensers, at today’s prices. Recalculated every night.

Price $25.99
Cheaper than about 64% of the 1,499 comparable items (median $39.99).

Specifications

Product
Brand nameAPOLLO
Product typeOther
Size & build
Size1/2 in

Questions about this item

Should I pick the 1/2 in FNPT version of the Apollo 3820301 for my plumbing?

Yes, the Apollo 3820301 is built with a 1/2 in FNPT connection and brass body, matching standard residential supply lines and meeting ASSE 1001-2008 requirements.

What does the 125 psi rating mean once the breaker is installed?

It means the valve will reliably prevent back-siphonage up to 125 psi working pressure, which covers typical municipal and well-system pressures.

How does the FNPT thread and ASSE 1001 standard limit what I can connect?

The female NPT thread accepts 1/2 in male NPT fittings, and ASSE 1001 certification confirms compliance for potable-water vacuum-breaking duty.

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