- Spears True Union Check Valve
Spears makes the highest quality True Union check valves. Use them to add a last line of defense against overflows. Check valves allow one directional water flow and are used to prevent back 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. These check valves feature true union fittings on each end for easy replacement and disassembly.
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 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 then a project delay.
Must have By William on 11/13/2017William would recommend this product to a friendI have three of these now and love them all. My oldest is 3 years old and with basic cleaning once a year it hasn't shown any signs of failing. The true union is a significantly better choice over the other non true union option since it allows for easy disconnection of the valve for cleaning.
Works as advertised By DaveC on 4/1/2017DaveC would recommend this product to a friendBuilt well, functions flawlessly. I have 4 on my reef. buy a spare so you can clean one while other is in use
Nice By Edddieg on 1/28/2016Edddieg would recommend this product to a friendI am building a reef tank and with this check valve is awesome just an extra security for your home
good quality product By playboy3468 on 8/17/2015playboy3468 would recommend this product to a friendfeels like a quality product. built well
Good valve By KEITH on 8/5/2015KEITH would recommend this product to a friendWorks as designed simply another insurance policy.BUY a second one to install when you need to clean
Good Valve By KEITH on 6/23/2015KEITH would recommend this product to a friendWorks as described should be on most systems with a long plumbing run
Works good By Andrew on 5/12/2015Andrew would recommend this product to a friendIt does have a chatter to it every once in a while where it wont seat
Great product By Bill on 5/2/2015Bill would recommend this product to a friendI have been using these for about 10 years. After some time, coriline will prevent it from totally closeing, and will need to be replaced. Soaking in vinagar helps to extend the life.
good quality By Chase on 4/27/2015Chase would recommend this product to a friendThis is a high quality product. You can feel how sturdy this valve is just by handling it. It works just fine too!
Good and sturdy By Jeff on 3/24/2015Jeff would recommend this product to a friendWell built works great
get two for every one you need. By Charles on 3/23/2015Charles would recommend this product to a friendThese are high quality, well made check valves. However, any check valve will eventually get mineral deposits and with time may fail. Here is any easy solution so you never have this problem. I have two check valves, one for each of my pumps. Since this is a union, it unscrews easily and the valve can be removed in a few minutes. ( Unless you leave it in for a very long time). Every 4-6 months, remove the valve part of the unit and replace it with your spare. Then soak the one you removed in vinegar or whatever you use to remove mineral deposits for 24 hours. Your soaked valve will be as good as new and ready to put back in the system in 4-6 months. This has worked very well for me and is an inexpensive solution to check valve failure. So bottom line, purchase two union/check valves for every one you need and keep one clean and ready to replace the one in your system.. Since they are clear you can see when to change them. No need to wait for failure.
Doesn't work. By DivingTheWorld on 2/17/2015DivingTheWorld wouldn't recommend this product to a friendThis check valve uses solid construction and I really like how it has the two unions which makes installation much easier. The problem I have is that it just doesn't work. From day one it never worked. It slows the drainage down, but it still drains the overflow completely within about 2 minutes. If I could have done my plumbing over, I would have just saved my $ and not used a check valve. It's much simpler to just design your sump to accommodate. Luckily I did both, so it hasn't caused me any issues.
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My return from sump to display tank is 3/4" clear tubing. Would this product be best to prevent back siphoning?
This product would work just fine for that purpose. Just keep in mind that the fittings on this valve are slip fittings (for PVC pipe) so you will want to glue in a pair of barb adapters like the ones linked below so that you can use it with your flexible tubing.
To piggyback on Richard's question. I'm using the braided vinyl for my return with the CPR return. I need to get a check valve in there as well. So with this valve would I be able to use PVC cement to attach it in my vinyl line? Or would I be able to use more ratcheting clamps? Just need to know how I can get a check valve in there safely.
These check valves come ready for rigid pipe. In order to use flexible tubing you would need to first glue in a barb fitting, for example the street x barb fitting. From there you can put your braided tubing over the barb and secure with ratchet clamps.
Can these valves be used at any angle or just vertical?
Are the unions on this the same as any other union? For example if I were to lose or break the top screw portion of this could I substitute a union from the local hardware store's top portion and still have a good seal?
We cannot guarantee these will work with other unions. If replacement are needed we recommend selecting the same brand. Feel free to let us know if you have any further questions!
What is the length of this valve?
1/2" - 4-13/16"
3/4" - 4-15/16"
1" - 6"
1-1/4" - 6-13/16"
1-1/2" - 6-1/2"
2" - 7-9/16
Can these valves be installed horizontally or do they just work vertically? Thanks
Is it measured by the inner or outer diameter of the hose?
The sizes provided for the check valves denote what size PVC pipe or spigot (slip) fitting they will work with. Plumbing sizes are nominal and do not describe the actual measurement of the pipe or fitting.
Are there any ways to buy only the union parts? I want to take one of these from my old tank and use it with my new tank, but I don't want to buy a brand new valve just because one of the union parts is now missing.
We do not currently have just the replacement union parts available and a full replacement valve will be needed. Feel free to let us know if you have any further questions!
Will this 1" fit on reg white 1" pvc ?
It sure will!
Do you guys recommend placing these in the return lines routinely? How much will they decrease the flow back into the tank due to increased resistance in the return line? Thanks!
The best thing to do would be to set your system up so there it is not a problem if there is no check valves (so you have enough room in the sump to handle the water). Then if you want to, you can add check valves for convenience if you like (you will have less issues like skimmer overflows if the sump doesn't fill with a bunch of water every-time the power goes out). They will have a bit of an effect on your flow but for the most part its not something you would notice with the naked eye.
Why do you only offer slip fit on check valves? I'm looking at the Spears tru union 3/4". I don't want to have to glue barb fittings then if I want to hard pipe I'll have to buy a new valve,
I know they come with fpt ,better yet offer both options like the cepex ball valve.
I apologize for not having a threaded option for you. I have not seen the clear swing check valves with threaded unions but if our supplier has them I will suggest we carry them in the future.
For now you can always add a pipe adapter to them to make them threaded.
I hope this helps!
Have a great day :)
Does this check valve attach to pvc pipe or flexible tubing? If pvc are the connections threaded or smooth?
The check valve is a slip connection for pipe (which would be smooth).