We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Brass anti-siphon vacuum breaker with silicone seal, 3/4 inch NPT threads

Watts

Watts LF288AC Anti-Siphon Vacuum Breaker 3/4" NPT Silicone Seal

SKU CH-DRDG-SMMZD

Prevents back-siphonage on 3/4" NPT lines with a lead-free brass body and silicone seal rated to 125 psi and 180 °F

  • TypePipes, Valves & Fittings
  • Prevents backflow contamination with anti-siphon vacuum breaker design
  • Lead-free brass construction meets NSF/ANSI 372 for safe potable water
  • Silicone seal ensures reliable operation from 33 to 180 degrees F
  • Rated to 125 psi maximum pressure for residential supply lines
  • Certified to ASSE 1001 and CSA B64 standards for code compliance

3/4" NPT Anti-Siphon Vacuum Breaker

This Watts LF288AC vacuum breaker installs on a 3/4 inch NPT connection to stop back-siphonage in potable water systems. The lead-free brass body and silicone seal suit residential and light-commercial plumbing where cross-connection protection is required.

Sustained pressure and temperature performance

Rated for continuous operation up to 125 psi and temperatures from 33 to 180 degrees F, the disc-float mechanism maintains its seal under steady supply conditions without chatter or premature wear. The construction meets ANSI A112.1.1 and ASSE 1001 flow and durability criteria for constant-service installations.

Lead-free brass body with silicone disc seal

The compact 3 inch by 2 1/4 inch housing fits tight mechanical rooms while the NPT threads allow direct adaptation to standard copper, brass or steel piping. Certifications include cCSAus B64.1.1, NSF/ANSI 372 and UPC, confirming code acceptance for lead-free potable water use.

Highlights

  • Prevents backflow contamination with anti-siphon vacuum breaker design
  • Lead-free brass construction meets NSF/ANSI 372 for safe potable water
  • Silicone seal ensures reliable operation from 33 to 180 degrees F
  • Rated to 125 psi maximum pressure for residential supply lines
  • Certified to ASSE 1001 and CSA B64 standards for code compliance

Specifications

BrandWATTS
TypePipes, Valves & Fittings

Questions about this item

How much heat can the silicone seal withstand during continuous hot-water use?

The seal is rated for temperatures from 33 to 180 degrees Fahrenheit, so it handles normal hot-water supply without degrading.

Which pipe thread must my existing supply line have to connect directly?

It uses a 3/4-inch NPT connection, so your supply line needs matching 3/4-inch NPT threads.

Will this vacuum breaker meet the same backflow codes as the older brass unit I am replacing?

It complies with ANSI A 112.1.1, ASSE 1001, CSA B64 and NSF/ANSI 372, matching the standards commonly required for anti-siphon protection.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.