In this category you'll find an assortment of both control and check valves. Control valves allow you manage the flow of air from your aquarium air pump. You can divide and control the flow of air between different devices including multiple air stones, sponge filters etc. Check valves are small devices that allow water to flow in one direction only. They contain a flapper or small trap door that prevents water from flowing back into your air pump when a power outage occurs. If your air pump is located below the level of the water in your aquarium be sure to add a check valve to the air line tubing coming from your pump.

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  • Airline Connecting Kit [12 Piece]

    Airline Connecting Kit [12 Piece]

    An assortment of fittings for use with standard airline tubing. Kit includes 3 tees, elbows, crosses and joiners.…
    $7.72
  • Brass Pipe Valve

    Brass Pipe Valve

    These 1/8 MPT brass pipe valves are great for all types of aquarium, hatchery and aquaculture applications. Connects to standard 3/16 airline tubing.…
    $7.96
  • CO2 Check Valve [1pk]

    CO2 Check Valve [1pk]

    When an air pump is installed under the aquarium, a check valve should be used to prevent the siphoning of water into the pump in the event of a power outage. These valves can also be used in CO2 applications ie. for planted aquariums and calcium reactors etc.…
    $4.57
  • Hikari Check Valves [2 pk]

    Hikari Check Valves [2 pk]

    Eliminate The Risk Of Water Siphoning Backwards Through Your Aquarium Airline!…
    $3.63
  • ISTA Metal Air Valve - 2 Output

    ISTA Metal Air Valve - 2 Output

    The Ista Metal Air Valves (2 Outlet) allow you to control up to 2 different airlines from your air pump. Quickly and easily attach this handy device to the frame of your aquarium and streamline your air hose setup. With a control knob available for each outlet, you can adjust the pressure on each air tube individually. Customize the use of your air stones, bubbles, air-driven decorations, or any other air pump powered device.…
    $4.66
  • ISTA Metal Air Valve - 3 Outlet

    ISTA Metal Air Valve - 3 Outlet

    The Ista Metal Air Valves (3 Outlet) allow you to control up to 3 different airlines from your air pump. Quickly and easily attach this handy device to the frame of your aquarium and streamline your air hose setup. With a control knob available for each outlet, you can adjust the pressure on each air tube individually. Customize the use of your air stones, bubbles, air-driven decorations, or any other air pump powered device.…
    $5.95
  • ISTA Metal Air Valve - 4 Output

    ISTA Metal Air Valve - 4 Output

    The Ista Metal Air Valves (4 Outlet) allow you to control up to 4 different airlines from your air pump. Quickly and easily attach this handy device to the frame of your aquarium and streamline your air hose setup. With a control knob available for each outlet, you can adjust the pressure on each air tube individually. Customize the use of your air stones, bubbles, air-driven decorations, or any other air pump powered device.…
    $8.04
  • ISTA Metal Air Valve - 5 Outlet

    ISTA Metal Air Valve - 5 Outlet

    The Ista Metal Air Valves (5 Outlet) allow you to control up to 5 different airlines from your air pump. Quickly and easily attach this handy device to the frame of your aquarium and streamline your air hose setup. With a control knob available for each outlet, you can adjust the pressure on each air tube individually. Customize the use of your air stones, bubbles, air-driven decorations, or any other air pump powered device.…
    $9.78
  • Lee's AirLine Control Kit

    Lee's AirLine Control Kit

    Manufactured of high-quality, non-corrosive material. Package contains 4 plastic tee's and 5 two-way valves. Use to control air flow from the air pump.…
    $3.83
  • Lee's Check Valve

    Lee's Check Valve

    An essential accessory for every air pump. A Check Valve prevents water siphoning from the aquarium which may damage carpet, furniture and air pump or drain aquarium, killing fish or other inhabitants.…
    $3.55
  • Micro "Air" Valve [Barb X Thread] - 6 pk

    Micro "Air" Valve [Barb X Thread] - 6 pk

    Micro Ball Valves are used for regulating air flow through standard tubing for air controlled devices such as air stones, filters, protein skimmers, and ornaments.…
    $13.77
  • Micro Valve "Air" [Barb X Barb] - 6 pk

    Micro Valve "Air" [Barb X Barb] - 6 pk

    Micro Ball Valves are used for regulating air flow through standard tubing for air controlled devices such as air stones, filters, protein skimmers, and ornaments.…
    $13.77
  • Plastic Airline Tee's [2pk]

    Plastic Airline Tee's [2pk]

    Manufactured of high-quality, non-corrosive material. Use to control air flow from the air pump.…
    $1.78
  • Two Way Plastic Valve [2 pk]

    Two Way Plastic Valve [2 pk]

    Install as an in-line valve to control air flow from an air pump. Manufactured of high-quality, non-corrosive material.…
    $1.89
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