In Line Check Valve

[Alex Davies]

Good day,

Does anyone know if an inline check valve exists for 5/16 or 3/16 tubing? I'm hoping to install check valves on my lateral lines just as they enter the mainline. If so, who makes them?

Thanks

[mol1jb]

Why not just use CV taps?

[Alex Davies]

DOn't want to spend the $$$ to replace 2200 spouts. Thought maybe an inline check valve as the laterals enter mainline might prevent backflow if/when my vac pump shuts off (Running it on gas, and shut offs are inevitable)

[Alex Davies]

Is it just Leader Evap that makes the CV spouts? I'm looking at the CDL catalogue (closest dealer) and not seeing any CV spouts.

[BAP]

Leader Evaporator has exclusive rights to the check valve spouts developed by Dr Tim and the Proctor Maple Research facility.

[mol1jb]

DOn't want to spend the $$$ to replace 2200 spouts. Thought maybe an inline check valve as the laterals enter mainline might prevent backflow if/when my vac pump shuts off (Running it on gas, and shut offs are inevitable)

I thought that the increase in syrup produced outweighed the cost of CV taps. But I suppose that depends on lots of factors such as use of vacuum and line installation.

[Alex Davies]

I thought that the increase in syrup produced outweighed the cost of CV taps. But I suppose that depends on lots of factors such as use of vacuum and line installation.

Yeah, I read that in another thread. And there's probably something to it. However, this season I'm attempting to be a good boy and break my bad habit of maxing out the credit cards before the season starts only to work my arse off the rest of the season to pay it all off.

Anyhow, doesn't sound like an inline check valve exists, as this might have been a fairly inexpensive though maybe not as effective (as installing cv spouts) solution to my problem...

[Haynes Forest Products]

What I believe could be a factor is the design of most of the check valves I have seen. They don't take kindly to freezing liquids. The ones I have seen have a wide body that's glued together and look as though they would hold to much liquid making them easy to crack at the seam when under smaller amounts of stress from ice.

I know when you look at 2200 check valve spouts it sounds daunting but if you have 220 laterals of 10 taps each and spend $3.00 per check valve off Ebay that might work now because you strive for five double that.

Lastly I do believe that the reason CV work as well as they do is the ball check is as close to the tap hole and stops the suck back before the sap ever touches the drop line.

[minehart gap]

Alex, I found 1/4” and 3/8” check valves at a plumbing supply house. Not Lowe’s type store but real supply house. I decided not to buy them so I don’t remember the price.

I do remember that there was a problem with low pressure. Most check valves are spring loaded and do not open until there is 7 pounds of pressure against them

[Alex Davies]

I think I've decided to buy the cv adaptors from leader.

Thanks anyhow