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Swing Check Valve True Union

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Quick Overview

Check valves allow one directional water flow and are used to prevent back flow and siphoning. They are commonly used on return pump outputs to prevent water overflowing the sump in the event of a power outage, pump failure or maintenance.




  • Slip x Slip

  • True union connection can be screwed and unscrewed for replacement of maintenance.

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  • Quick Overview

Check valves allow one directional water flow and are used to prevent back flow and siphoning. They are commonly used on return pump outputs to prevent water overflowing the sump in the event of a power outage, pump failure or maintenance.

  • Slip x Slip
  • True union connection can be screwed and unscrewed for replacement of maintenance.
More

Swing Check Valve True Union

91% Recommend this to a friend (21 of 23)

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34” Swing Check Valve True Union
SKU: 202454
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$15.99
$15.49  
 
 
1” Swing Check Valve True Union
SKU: 202455
Earn 17 Reward Points
$17.99
$16.99  
 
 
1 12” Swing Check Valve True Union
SKU: 202456
Earn 23 Reward Points
$23.99
$22.99  
 
 
2” Swing Check Valve True Union
SKU: 202457
Earn 29 Reward Points
$29.99
$28.99  
 

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Previously Asked Questions

  • by Lloyd on November 26, 2013, @3:55 AM

    I have the flexible 3/4" vinyl tubing for the return line, will I be able to use this 3/4" swing check valve for my setup? thanks.

    Bulk Reef Supply Hi Lloyd,
    The swing check valve has slip PVC connections intended to be glued into rigid pipe. It won't connect out of the box but you could use some barb x pvc connections to add barbs to the check valve.

    Do you find this question helpful?  Yes   No

  • by David on February 17, 2014, @10:16 AM

    Hello. I would like to know if this check valve can be installed horizontally? Or must it always be in the vertical position? Thanks

    Bulk Reef Supply Hi David,
    It can be installed horizontally.

    Do you find this question helpful?  Yes   No

  • by santiago on June 25, 2014, @7:44 PM

    hi from where do you get the measurements to know the size is the check valve?

    Bulk Reef Supply Hi Santiago,
    I am not sure that I understand your question correctly, but the size listed on all fittings is the nominal size. It isn't a literal measurement but a size that represents the fittings compatibility. For example a 1" gate valve will fit a 1" pipe, will fit a 1" check valve, and so on. Even though none of them actually literally measure 1"

    Do you find this question helpful?  Yes   No

Full Details

These are among the highest quality check valves to be found. Relative to other types and manufacturers of check valves, there is minimal pressure loss.

The true union check valve is specially designed to be disassembled by unscrewing the nuts in line leaving the tail pieces solvent cemented to the pipe.

This true union allows you to remove the body for repairs, or cleaning, even providing the opportunity to change the body or spring.


The golden rule of plumbing is that every job takes three trips to the store. While this can be frustrating locally it can be much worse when shopping online. Being short a fitting or two can delay a plumbing project for days. Here are some quick tips to avoid this.


  • Plan your plumbing on paper
  • Don't skimp on unions. Unions allow for easy breakdown and maintenance as well as remove the need for precise elbow placement. Use them as often as possible.
  • When in doubt order extra. We happily accept returns for a full refund (less shipping) on all unused fittings within one month of purchase. A few extra bucks in return shipping is less frustrating than a project delay.

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Reviews

Items 1 to 12 of 23 total

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  • This is not your hardware store check valve By Alec on 1/15/2015

    I bought a check valve from Homedepot only to realize that the hardware store check valves require high pressure, therefore reduce the flow, to push the water through. This rubber check valve worked like a charm and the clear window let me see if the valve is open or closed easily!
  • Completely worth it. By Jason on 11/18/2014

    I have 20 or so of the Home Depot check valves, they're cheap and work fine. But... they do go bad. After 15 years with different size aquariums over the years, now with 750g tank, the last thing you want is for something like this to go bad. I have been slowly replacing them with these valves mostly because you can see whats going on. I install them 'flap up' and follow the flow 'arrow' - None have failed. I will say they are a little bulky tho, but imo they are completely worth it.
  • Good but not perfect By Simply J on 11/3/2014

    I'm very pleased with these valves as a fail safe. However if you install them in a vertical position be careful not to drop/lose the O-Rings as they tend to fall out easily. Other then that very good product.
  • Good for the purpose By Daniel on 10/16/2014

    I don't have a million dollars to spend on a check valve at the moment, so I got this one. It did the job, and did it well. Having the union there is pretty nice.

    There is one smidge of an issue. There's a very very small leak (allowing a very small drip of backflow). I assume this is because there isn't enough force on the flapper. BUT when you have water above and below the valve, there is enough force from pressure and gravity (creating a vacuum and pulling down on the flapper while water on top pushes it closed) zero leaking in this case.
  • had vibration but found problem By ayhan on 9/2/2014

    I had this vibration problem when sump pump is turned off. I was really [ticked] off.After research I found that problem is caused by pressure from water. I had installed check valve pretty close to sump pump which was mistake. Next day I have changed location of check valve and installed to closer return pipe goes to the tank. I know valve manufacturer didn't design for use fish tanks so I can't blame them for no instruction but BRS should take notes and print out for customers or send warning email about installation.
  • Terrible By Chris on 5/30/2014

    I installed this check valve about a week ago and since then I've tested it many times. Does not work as advertised. The valve for some reason continually opens and closes making a load vibration noise. It only slows the water flow. Maybe it needs more time to wear in.
  • Awesome!! By 120reef on 1/11/2014

    Looks and works awesome!
  • Didn't work for me By Brad on 11/23/2013

    I used the 1 inch version of this valve between my display tank and return pump. The valve worked fine for a few weeks then started acting up when I was shut the pump off for feeding. The flapper would bounce on and off where it was supposed to seat. Not only did this mean it wasn't stopping the siphon from the tank, but also sent vibrations though the pipes and sump. This would continue until I would lift the loc line out of the water to break the siphon. I tried cleaning the valve even though it was not visibly dirty, and that would make it work correctly for about 2 days. I called customer service, they had no other suggestions but offered to send me a new one free. New on came and had the same problem.

    I have now switched to the spears true union check valve and it has worked fine for over a month now. I gave the product 2 stars instead of 1 because a friend of mine uses this valve and it has given him no issues. I recommend spending a couple more bucks on the spears valve.
  • Great for return By G hoover on 11/18/2013

    Use inline for return pump. Works perfect when I shut pump down for maintenance . USE THIS OR HAVE PROBLEMS
  • Great quality By Yunier on 8/6/2013

    Received fast and works great
  • Great Check Valve By Warren on 4/25/2013

    Does not interfer with water flow at all like some other check valves. With this being a union, it keeps you from having to add a union and a check valve. Saves space.
  • Works well By Dan on 4/21/2013

    Its great. Have yet to have any problems with it.

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