Circulator ball valve placement

Joe_51

My intention with the boiler system I am piping in the home we are building was to place a ball valve before and after every circulator pump in the system ( I have a total of 7 circulators in my system which is a primary/secondary system with variable speed injection) I'm plain out of room for the required piping and need more space. Can I eliminate a few of the ball valves ??? I see a lot of systems posted on this board that appear not to have ball valves on both sides of the pumps. If I can eleiminate any of them which ones ?? Line or load. Any thoughts would help me . Thanks Joey

maine rick

check with your supplyer for ball valve flanges for mounting your cirs. i use them on all installs. you can get them in IPS or SWT hope this helps

Joe_30

Well, if the circulators all pump away from a single manifold it should suffice to have one single service valve before the manifold ,i.e. before all 5 pumps, and one downstream of each. You would not lose much water in replacing a pump.

lchmb

called Isolator flanges..

And like he said they are an excellent item. A bit more costly but will work wonder's for what you want. I would suggest they be there just for future service work.

Joe_51

thanks guys for the speedy responces.

ed wallace

ball valves

if every circulater is on ball valves you can isolate the bad circulator while still heating rest of house

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Brad White_2

Full Port

Ball Valves are a place to start. Reduced port would pinch where you can stand it least. That said, (knowing that you want to avoid bona-fide valves) I like the good quality isolation flanges too, with built-in purge/drain valves.

But my favorite are the B&G Service Valves. Not sure if still available. Male threads into flanges and you are done. Good positive shut-off.

If I have to use ball valves, I get them with a "T" handle for compactness.

hr

I'm thinking

the built in check valves in ther Grundfos 15-58 Super Brute will provide positive shut off for that side of the pump. So just one iso flange needed on the intake side of the circ. Or if the pumps are headered into one manifold use one large ball valve at the boiler. You will lose a small amount of fluid, not a big deal.

hot rod

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Brad White_2

That's good to know, HR

I just bought a small case of them as spares (and because I am partly insane in my laboratory :^)> )

With four P/S zones (one for the main house, one for my limited radiant, one for basement ventilation and one for basement radiation) I will rest easy. Thanks for being the pioneer!

Big Idahoan

check-trol flange

We started using the B&G check-trol flanges on the last 2 radiant jobs and they will save you time and space with the sweat or threaded options and the built in flow check. this option is great especially if you pipe primary secondary w/ injection mixing and zone circulators, that is how we do all of our radiant jobs, and if you install your circulators to design specifications you might end up not being able to always use circulators w/ built in check valves.

Joe Mattiello

Freedom Flanges

Please see attached for submittal data information, on Taco ball valve type shutoff freedom flanges.

Taco, Inc.
Joe Mattiello
Technical Service Technician
joemat@taco-hvac.com
401-942-8000 X 484
www.taco-hvac.com

Unknown

Joe

Are these available now ?

hr

Seeing is believing

Here is a Grundfos 15-58 Super Brute, motor removed with 45 psi water pressure against the intergral check.


This Grundfos Super Brute represents one of the biggest improvements in wet rotor circs in my career. 3 speeds, intergral check, in the correct location and 3 year warranty. Find em at a wholesaler near you.

hot rod

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Glenn Harrison_2

Freedom Flange question

I see the spec sheet says bronze isolation Flanges. Is this different than the green one's? Also, have any improvements been made to the hex head shaft seal, as I always have problems with the hex head shaft seal leaking when you turn the shaft after the flange has sat untouched for just a few years? Sometimes they even leak on there own with nobody toucing them.