- Check Valve - Spears
Spears makes the highest quality 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.
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.
Good and clear By Steven H. on 12/11/2017Steven H. would recommend this product to a friendTwasn't the night before Christmas, so I bought for myself, a clear one-way valve to prevent power-failure hell-f. It works like a charm, and nothing bad can I say, so everyone buy one and have a nice day.
awesome these were perfect By jose on 4/5/2016jose would recommend this product to a friendawesome work perfect in my aquarium
Works Great By cocochevelle on 2/3/2015cocochevelle would recommend this product to a friendI got tired of the submersible pump in my sump and decided to put a Reeflo Snapper on my 55 gallon. I used the Spears 2" check valve on the output side of the new pump and then above the Spears, there' s a 2 inch ball valve (Lowe's) to adjust the flow. Works great so far!
DIY project By Mike DIY on 4/16/2013Mike DIY would recommend this product to a friendI recently ordered the 3/4 inch Spears Schedule 80 Check Valve.
You will additionally need when choosing to use flexible hose as a return from the Sump
Bulk Reef Supply:
2 count Sku # 202544 3/4 Schedule 80 female Pipe Adapter
2 count Sku # 202656 3/4 Schedule 80 Straight Barb X Male Thread
*** AND! a trip to Lowe's for: ***
Two 1 inch sawed pieces of 3/4 inch X 5-FT Sched 40 PVC Pipe
Two metal hose clamps
and Water safe hot and cold GLUE
Sand off the sawed PVC parts ( I could not find 3/4 inch coupler so thats what I had to do.
Make sure you install on a 90 degree angle and there you go
Hope I saved you atleast one trip or order from my experience
Mike from Boston
Great By Holyreefer on 3/22/2013Holyreefer would recommend this product to a friendI like them so much i have 3 of them on my tank currently
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Is this check valve threaded at bothe ends?
This fitting is a slip fitting, it has no threads.
I am planning to pick up the 1/2" version , the barb insert to use with this check valve is it this one ? 1⁄2" Pipe Adapter Spigot x Barb
Does this check valve disassemble for cleaning?
The Spears swing check valves are not serviceable. You could always clean them with vinegar, but the actual seal cannot be removed from the valve, like the George Fischer Wye check valve can.
Are these threaded or slip?
All of the fittings are slip (as this is "normal") unless specifically labeled as thread. In the case of these valves they are all slip.
Can this be used with vinyl tubing and a clamp? Or just PVC?
This fitting only has slip fittings (for PVC pipe) but you could glue on a set of barb fittings if you wanted to use it with vinyl tubing and a clamp.
Are these listed as the internal or outside dimentions?
PVC fittings are sized in a "nominal" sizing. Neither dimension will read exactly the same but the nominal size means that a 1" check valve is going to fit a 1" pvc pipe, which will fit a 1" elbow, etc. The standard is the same across all the PVC as well so a 1" sch80 check valve will fit a 1" sch40 pipe and so on.