Ir a contenido
¡Disfruta de envío rápido y gratuito en todos los pedidos superiores a $89! Contáctenos (855) 424-4376
¡Disfruta de envío rápido y gratuito en todos los pedidos superiores a $89! Contáctenos (855) 424-4376

Flujos de regreso

Protect your potable water—and comply with code—by selecting the right back-flow prevention devices for your irrigation system. Our Back Flow Preventers & Parts collection offers trusted assemblies and accessories built for homeowners, DIYers, and pros alike.

Whether you’re installing a new lawn sprinkler system or upgrading an existing irrigation setup, a proper back-flow preventer is a critical safeguard. These devices stop the reversal of water flow—known as back-siphonage or back-pressure—which can draw fertilizers, soil bacteria, and other contaminants into your drinking water supply.

Shop by type

  • PVB (Pressure Vacuum Breaker): common for lawn irrigation; must be installed above grade and typically 12" above highest downstream outlet.
  • RPZ / RP (Reduced Pressure Zone): highest protection for high-hazard or fertilizer/chem injection; requires drain/relief discharge area.
  • DC / DCVA (Double Check Valve Assembly): used where allowed for low-hazard irrigation without chemicals.
  • AVB (Atmospheric Vacuum Breaker): zone-level protection; not for continuous pressure (typically one per zone where permitted).

What you'll find

  • Sizes: 3/4", 1", 1-1/2", 2" (select larger commercial sizes available)
  • Options & parts: union ball valves, test cocks, lead-free models, repair kits (bonnets, checks, relief assemblies), freeze covers
  • Brands: Febco, Watts Water, Apollo, Zurn (Wilkins)

Why choose Big Frog Supply? We focus on irrigation, plumbing and landscape lighting supplies—so you’re not just buying a part, you’re tapping into expert-curated gear, reliable inventory, and a partner who speaks “sprinkler system” language.

  • Agotado

    Watts Water Technologies Kit de flotador de ventilación con interruptor de vacío de presión de 1 pulg.

    Watts Water Technologies
    $ 18.00 - $ 18.00
    $ 18.00
    $ 18.00 - $ 18.00
    $ 18.00

    Este kit de reparación de ventilación 1 EN 800M4 proporciona todas las piezas necesarias para reparar el flotador de ventilación del interruptor d...

    Ver todos los detalles
    $ 18.00 - $ 18.00
    $ 18.00
    $ 18.00 - $ 18.00
    $ 18.00
    Agotado

  • Watts - Válvula reductora de presión de agua LF25AUB-Z3 Tamaño de tubería de 1 pulgada

    Watts Water Technologies
    $ 505.65 - $ 505.65
    $ 505.65
    $ 505.65 - $ 505.65
    $ 505.65

    Hoja de especificaciones Las válvulas reductoras de presión generalmente se instalan frente a las tuberías para ayudar a mantener la presión en t...

    Ver todos los detalles
    $ 505.65 - $ 505.65
    $ 505.65
    $ 505.65 - $ 505.65
    $ 505.65
  • Agotado

    Watts 1-LF009M2-QT Sistema de reflujo de baja presión, 1" FIP

    Watts Water Technologies
    $ 713.36 - $ 713.36
    $ 713.36
    $ 713.36 - $ 713.36
    $ 713.36

    Este conjunto de zona de presión reducida sin plomo de 1 pulgada está diseñado para evitar que el reflujo de agua contaminada ingrese al suminis...

    Ver todos los detalles
    $ 713.36 - $ 713.36
    $ 713.36
    $ 713.36 - $ 713.36
    $ 713.36
    Agotado

  • Watts 2-LF009M2-QT Sistema de reflujo de baja presión, 2" FIP

    Watts Water Technologies
    $ 1,111.71 - $ 1,111.71
    $ 1,111.71
    $ 1,111.71 - $ 1,111.71
    $ 1,111.71

    Este conjunto de zona de presión reducida de 2 pulgadas está diseñado para evitar que el flujo de agua contaminada ingrese al sumini...

    Ver todos los detalles
    $ 1,111.71 - $ 1,111.71
    $ 1,111.71
    $ 1,111.71 - $ 1,111.71
    $ 1,111.71
  • Agotado

    Watts 1.5-LF009M2-QT Sistema de reflujo de baja presión, 1 1/2" FIP

    Watts Water Technologies
    $ 1,171.76 - $ 1,171.76
    $ 1,171.76
    $ 1,171.76 - $ 1,171.76
    $ 1,171.76

    Este conjunto de zona de presión reducida de 1 1/2 pulgadas está diseñado para evitar que el flujo de agua contaminada ingrese al su...

    Ver todos los detalles
    $ 1,171.76 - $ 1,171.76
    $ 1,171.76
    $ 1,171.76 - $ 1,171.76
    $ 1,171.76
    Agotado
  • Agotado

    Watts 0125572 Válvula reductora de presión LF25AUB-Z3 de 3/4" (prensa) sin plomo

    Watts Water Technologies
    $ 223.36 - $ 223.36
    $ 223.36
    $ 223.36 - $ 223.36
    $ 223.36

    Instalación de especificaciones Presión máxima de trabajo: 300 psi (21 bar) Rango de presión reducida ajustable: 25 a 75 psi (172 a 517 kP...

    Ver todos los detalles
    $ 223.36 - $ 223.36
    $ 223.36
    $ 223.36 - $ 223.36
    $ 223.36
    Agotado

  • Kit Watts Check 800m4 1" Watts PVB

    Watts Water Technologies
    $ 34.29 - $ 34.29
    $ 34.29
    $ 34.29 - $ 34.29
    $ 34.29

    Kit de reparación de válvula de retención para disyuntor de vacío de presión 800M4-QT / 800M4-FR de 1" Este kit contiene lo siguiente: Com...

    Ver todos los detalles
    $ 34.29 - $ 34.29
    $ 34.29
    $ 34.29 - $ 34.29
    $ 34.29
  • Agotado

    Sistema de contraflujo Watts de baja presión, 3/4" FIP

    Watts Water Technologies
    $ 483.32 - $ 483.32
    $ 483.32
    $ 483.32 - $ 483.32
    $ 483.32

    Este conjunto de zona de presión reducida de 3/4 de pulgada está diseñado para evitar que el flujo de agua contaminada ingrese al suministro...

    Ver todos los detalles
    $ 483.32 - $ 483.32
    $ 483.32
    $ 483.32 - $ 483.32
    $ 483.32
    Agotado

  • Watts 0887709 KIT de flotador y ventilación de 1/2" y 3/4", PVB de reparación blanco

    Watts Water Technologies
    $ 14.57 - $ 14.57
    $ 14.57
    $ 14.57 - $ 14.57
    $ 14.57

    El kit de reparación contiene: ventilación del flotador, conjunto de disco, sello y resorte y junta tórica del capó Para reparar la ventil...

    Ver todos los detalles
    $ 14.57 - $ 14.57
    $ 14.57
    $ 14.57 - $ 14.57
    $ 14.57

  • Watts RK 800M4-B 1 1 IN Pressure Vacuum Breaker Bonnet Assembly Kit 0887701

    Watts Water Technologies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 47.81
    $ 47.81 - $ 47.81
    $ 47.81

    This 1 IN 800M4 bonnet assembly repair kit provides all the parts necessary to replace the bonnet of the applicable pressure vacuum breaker. This ...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 47.81
    $ 47.81 - $ 47.81
    $ 47.81
  • Agotado

    Watts LF007M1-QT 1 válvula de retención doble de 1 pulgada

    Watts Water Technologies
    $ 575.13 - $ 575.13
    $ 575.13
    $ 575.13 - $ 575.13
    $ 575.13

    Este conjunto de prevención de reflujo de válvula de retención doble sin plomo de 1 pulgada está diseñado para evitar que el reflujo de agua contam...

    Ver todos los detalles
    $ 575.13 - $ 575.13
    $ 575.13
    $ 575.13 - $ 575.13
    $ 575.13
    Agotado

  • Watts LFFPTC-F 1/8" - 1/8 In Lead Free Full Port Test Cock 781074LL

    Watts Water Technologies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 23.60
    $ 23.60 - $ 23.60
    $ 23.60

    1/8 In Lead Free Full Port Test Cock 781074LL   This 1/8 IN lead free full port test cock is used for testing 1/2 to 1 inch lead free backflow pre...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 23.60
    $ 23.60 - $ 23.60
    $ 23.60

  • Watts LFFPTC-F 1/4" - 1/4 In Lead Free Full Port Test Cock 781075LL

    Watts Water Technologies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 23.60
    $ 23.60 - $ 23.60
    $ 23.60

    This 1/4 IN lead free full port test cock is used for testing 1 1/4 to 2 inch lead free backflow preventer, as an isolation valve for gauges or as...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 23.60
    $ 23.60 - $ 23.60
    $ 23.60

  • Watts RK 009M2-CK2 1 1 IN Reduced Pressure Zone Assembly Backflow Repair Kit, Second Check Kit, for 009M2 0887790

    Watts Water Technologies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 73.60
    $ 73.60 - $ 73.60
    $ 73.60

    This 1 IN 009M2 second check repair kit provides all the parts necessary to replace the major internal components of the applicable reduced pressu...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 73.60
    $ 73.60 - $ 73.60
    $ 73.60

  • Watts LF009M3-QT-S 3/4 3/4 IN Lead Free Reduced Pressure Zone Backflow Preventer Assembly, Quarter Turn Shutoff Valves, Bronze Strainer (Discontinued)

    Watts Water Technologies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 579.00
    $ 579.00 - $ 579.00
    $ 579.00

    3/4 IN Lead Free Reduced Pressure Zone Backflow Preventer Assembly, Quarter Turn Shutoff Valves, Bronze Strainer Lead Free: YES 0122695 This 3/4 i...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 579.00
    $ 579.00 - $ 579.00
    $ 579.00

  • Watts Primer kit de verificación para RPZ de 1" 0887789

    Watts Water Technologies
    $ 80.75 - $ 80.75
    $ 80.75
    $ 80.75 - $ 80.75
    $ 80.75

    PRIMERA COMPROBACIÓN DEL KIT DE REPARACIÓN DEL CONJUNTO

    $ 80.75 - $ 80.75
    $ 80.75
    $ 80.75 - $ 80.75
    $ 80.75
  • Agotado

    Watts Disyuntor de presión antisifón de bronce de 1 pulg., cierre de cuarto de vuelta, manijas en T

    Watts Water Technologies
    $ 438.61 - $ 438.61
    $ 438.61
    $ 438.61 - $ 438.61
    $ 438.61

    Descripción del Producto Tamaño: 1" Este interruptor de vacío de presión antisifón de 1 pulgada evita que el flujo inverso de agua contam...

    Ver todos los detalles
    $ 438.61 - $ 438.61
    $ 438.61
    $ 438.61 - $ 438.61
    $ 438.61
    Agotado
  • Agotado

    Watts LFN45BM1-U-S 3/4 3/4 IN Lead Free Water Pressure Reducing Valve, Solder Union x FPT, Adjust 25-75 psi, Max Work 400 psi 0009480

    Watts Water Technologies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 210.48
    $ 210.48 - $ 210.48
    $ 210.48

    3/4 IN Lead Free Water Pressure Reducing Valve, Solder Union x FPT, Adjust 25-75 psi, Max Work 400 psi 0009480 Lead Free: YES   This 3/4 inch lead...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 210.48
    $ 210.48 - $ 210.48
    $ 210.48
    Agotado

  • Watts - 3/4-LF860-QT RP - 3/4" RPZ Lead Free 860 Series Reduced Pressure Zone Assy #0683001

    Watts Water Technologies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 675.97
    $ 675.97 - $ 675.97
    $ 675.97

    This 3/4 inch lead free reduced pressure zone backflow preventer assembly is designed to prevent the reverse flow of high hazard (toxic) fluids fo...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 675.97
    $ 675.97 - $ 675.97
    $ 675.97

  • Watts - 11/2-LF009M2-QT-S - 1 1/2 IN Lead Free Reduced Pressure Zone Backflow Preventer Assembly, Quarter Turn Shutoff Valves, Bronze Strainer (Discontinued)

    Watts Water Technologies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,413.13
    $ 1,413.13 - $ 1,413.13
    $ 1,413.13

    1 1/2 IN Lead Free Reduced Pressure Zone Backflow Preventer Assembly, Quarter Turn Shutoff Valves, Bronze Strainer Lead Free: YES This 1 1/2 inch ...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,413.13
    $ 1,413.13 - $ 1,413.13
    $ 1,413.13

  • Watts - LF007M3-QT-FZ - 3/4 - 3/4 In Lead Free Double Check Valve Backflow Preventer Assembly, Quarter Turn Shutoff, Single Top Entry 0063231

    Watts Water Technologies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 474.98
    $ 474.98 - $ 474.98
    $ 474.98

    Series LF007 Double Check Valve assemblies are installed at referenced cross-connections to prevent the backflow of polluted water into the potable...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 474.98
    $ 474.98 - $ 474.98
    $ 474.98

  • Watts -LF009M2QTFS - 1 1/2 IN Lead Free Reduced Pressure Zone Backflow Preventer Assembly, 1/4 Turn Shutoff Valves, Lever Handles

    Watts Water Technologies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,504.77
    $ 1,504.77 - $ 1,504.77
    $ 1,504.77

    This 1 1/2 inch lead free reduced pressure zone backflow preventer assembly is designed to prevent the flow of polluted water from entering into t...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 1,504.77
    $ 1,504.77 - $ 1,504.77
    $ 1,504.77
  • Agotado

    Watts LFN55BM1 U 3/4 3/4 IN Lead Free Water Pressure Reducing Valve, NPT Thread Union x NPT Female, Max Work 400 psi, Adjust 25-75 psi - 009589

    Watts Water Technologies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 201.01
    $ 201.01 - $ 201.01
    $ 201.01

    3/4 IN Lead Free Water Pressure Reducing Valve, NPT Thread Union x NPT Female, Max Work 400 psi, Adjust 25-75 psi 0009589 Lead Free: YES This 3/4 ...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 201.01
    $ 201.01 - $ 201.01
    $ 201.01
    Agotado

  • Watts LFN45BM1-U 3/4 3/4 IN Lead Free Water Pressure Reducing Valve, NPT Union x FPT, Adjust 25-75 psi, Max Work 400 psi 0009478

    Watts Water Technologies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 201.72
    $ 201.72 - $ 201.72
    $ 201.72

    3/4 IN Lead Free Water Pressure Reducing Valve, NPT Union x FPT, Adjust 25-75 psi, Max Work 400 psi 0009478 Lead Free: YES   This 3/4 inch lead fr...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 201.72
    $ 201.72 - $ 201.72
    $ 201.72

Before installing, check your local water-utility or code requirements—many jurisdictions mandate annual testing or specific assembly types based on flow, hazard level or chemical injection. Choose the correct device, install it properly (above grade or per elevation specs), and test or maintain it regularly to ensure protection long-term.

Browse through the collection to find the right size, type and brand for your project—then install with confidence knowing your potable supply is locked down.

Related Articles

Freeze Protecting Your Pressure Vacuum Breaker

Backflow prevention assemblies must be drained for the winter in areas where freezing temperatures may occur. If water inside the...

Secrets Every Sprinkler System Owner Must Know About Pressure Vacuum Breakers

This article will provide a detailed understanding of PVBs, their significance, and why you need one for your irrigation system.

The difference between a Pressure Vacuum Breaker and a Reduced Pressure Zone

When it comes to protecting a plumbing system from backflow, there are different types of devices that can be installed....

Comparar productos

{"one"=>"Seleccione 2 o 3 artículos para comparar", "other"=>"{{ count }} de 3 artículos seleccionados"}

Seleccione el primer artículo para comparar

Seleccione el segundo artículo para comparar

Seleccione el tercer elemento para comparar

Comparar