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
Watts 1/2 inch lead-free brass anti-siphon backflow preventer, compact cylindrical form

Watts

Watts 1/2 LF 008PCQT-1/2 Anti-Siphon Backflow Preventer trap

SKU CH-5CFW-59KEB MPN 1/2

Anti-siphon backflow preventer protects potable water systems with lead-free brass construction rated to 150 PSI and 180 °F

  • Product typeDrain Components
  • Main materialLead Free Brass
  • Prevents contaminated water backflow with anti-siphon design
  • Lead-free brass construction certified for potable water use
  • Spill-resistant operation reduces mess during pressure fluctuations
  • Withstands up to 150 PSI and 180°F for durability
  • IAPMO and USC Foundation approved for code compliance

Anti-Siphon Backflow Preventer

The Watts 1/2 LF 008PCQT-1/2 is a lead-free brass backflow preventer designed to protect potable water supplies from contamination. It operates within a temperature range of 33 to 180 F and handles a maximum pressure of 150 PSI. The unit measures 2 inches wide by 5 3/4 inches long with an IPS connection. It meets IAPMO standards and is certified for potable water use.

Ideal for Plumbing Installations

This device suits residential and commercial plumbing systems requiring anti-siphon and spill-resistant protection at a 1/2 inch connection point. It is not intended for applications exceeding the 150 PSI pressure rating or the 180 F maximum temperature limit. Installers needing larger pipe diameters or different connection types should select an alternative model.

Capacity and Operating Headroom

The preventer comfortably handles standard potable water pressures up to 150 PSI and continuous temperatures up to 180 F. It provides reliable backflow prevention within these specified limits. Performance is not guaranteed beyond the rated maximum pressure or temperature thresholds.

How it compares

Measured against everything we stock in Drain Stoppers, Strainers & Traps, at today’s prices. Recalculated every night.

Price $733.99
Pricier than about 91% of the 4,240 comparable items (median $31.99).

Specifications

Product
Brand nameWatts
Model name1/2 LF 008PCQT-1/2 in
Product typeDrain Components
Size & build
Main materialLead Free Brass

Questions about this item

What size piping must I already have to connect this 1/2-inch IPS backflow preventer?

You need 1/2-inch IPS threaded pipe on both the inlet and outlet sides to thread the lead-free brass body directly into your plumbing.

Will the 150 PSI maximum pressure rating handle the supply pressure in a typical residential system?

Yes, most residential supplies run well below 150 PSI, so the valve will operate within its rated pressure range alongside existing piping.

How can I verify the device is functioning after installation?

Open a downstream fixture and confirm water flows without back-siphonage; the spill-resistant vent should remain dry under normal pressure up to 180 °F.

More in Drain Stoppers, Strainers & Traps

Similar items