In-Line Threaded Check Valve
Click to Enlarge
$15.99 - $29.99



This item ships via motor freight and may arrive separate from the rest of your order
This item ships from the manufacturer and may arrive separate from the rest of your order
Live Koi ship from our hatchery and may arrive separate from the rest of your order
Plants ship in accordance with your climate zone & are excluded from our free shipping promotion
Not sure which climate zone you're in? Find out here!
This item ships via ground carrier and will arrive within 4-8 business days

  • Details
  • Tech Specs
  • Made In The USA
  • Comes In Several Sizes
  • 175 PSI

In-Line Threaded Check Valves prevent backflow and loss of prime all the while providing efficient flow. Made from acetate plastic and containing a 316 stainless steel spring a Bun-N seal, they are non-corrosive, nonconductive, and will outperform and outlast most metal valves.

Tech Specs

From product dimensions to operation manuals, the TECH SPECS tab contains all of the information you need to choose the right equipment for your pond.

In-Line Threaded Check Valve
In-Line Threaded Check Valve
In-Line Threaded Check Valve
1 ½"
In-Line Threaded Check Valve
1 ¼"
Inside Diameter 3/4" 1" 1 1/4" 1 1/2"
Outside Diameter 1.25" 1.5" 2.0" 2.25"
Length 2.625" 2.875" 3.375" 3.75"

How & When To Use

Simply place valve in-line wherever you are looking to stop pond water from back-flowing, such as with small water pumps or on aeration diffuser sticks and plates.


• Make sure arrow points in direction of flow
• Use minimum amount of pipe joint compound for threads
• Do not exceed working pressure of 175 PSI
• Not recommended for use in oil or gas systems