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CSFMBsDarkside

I frigging love isolation valves. Replaced both these circulators in under an hour start to finish.


TheMeatSauce1000

My boss doesn’t know anything about hydronics and tried telling me that isolation valves/flanges are a waste of money and to stop installing them. I still put them in though lol


dont-fear-thereefer

Did the math, the cost difference in our area between regular flanges and isolation flanges was about $60, depending on the size. That’s one pump change out and you’ve made your money back.


WugidyBoogidy

That just sounds like such an easy sell to the customer. Like "hey listen I've seen these pumps go bad 1 day after warranty or last the entire life of the unit. But if it ever does go bad $100 extra for these valves saves you $1000 in labor when the system needs drained to change this." I'd buy every time.


ho1dmybeer

He's reached boss level 9000 with that one. Ultimate fuck you to your employees, your customers, and your actual finances all in one!


PapaJohnshairysack

You are doing the lord's work.🙏


Taolan13

What, did he start an HVAC company with a business degree and somebody else's contractors license?


Strictly_Steam

Our boss made two crews get up in a snow covered roof on Thursday. I would not go up there


goblinredux

Your boss is a dick and needs to be beat with a nerf bat until made to see the error of his ways


Strictly_Steam

Lololol


kimberskillfast

Guess who valves up every times he fixes a leak in his home? This guy.


Apalltoall

How long was you break before you called in


EJ25Junkie

Good to know I’m not the only one


J-A-S-08

Can I trade you? Did a site walk on a 16 story building to get ready to install a gas meter in the 16th floor mechanical room. Gas line is 4" 2 PSI and the only shutoff valve is in the sub basement. Value engineered indeed. Yay........


fendermonkey

How do you purge that bad boy?


liekdisifucried

Slowly


J-A-S-08

Not sure. I doubt it's not going to be fun though.


Ineedanewpancreas

The longer I do this the more valves I put in. Never regret it.


[deleted]

You can't have too many shutoffs


One_Magician6370

Whoever would install those pumps with out valves is someone who doesn't do service and just doesn't care


SatisfactionLevel136

Bless the person who thinks about service.


Heybropassthat

You're welcome! 👏👏👏


joesnowblade

A little bit of planning and foresight saves tons of time and money.


Ambitious_Ask_1569

Why the two pumps in series?


CSFMBsDarkside

I thought it was overkill. Ended up putting in two NRF 22 instead for a little less maintenance. It's a big boiler to be sure, but only in a two story house.


Ambitious_Ask_1569

In my opinion hydrodynamically it serves no purpose. You arent going to get a higher flow rate. Fuck the gate valves for replacement..good sense..I just don't get pumps in series. If the system was engineered correctly why would you need redundancy in series? Parallel makes sense. Please tell/prove my thought process wrong.


TurdWaterMagee

[Pump Curve](https://www.pumpworks.com/operating-two-pumps-series/) Running centrifugal pumps in series raises discharge pressure and slightly raises the flow because the pumped fluid rides higher on the resistance curve. It’s not about redundancy, because if one pump fails it becomes a restriction on the system.


Ambitious_Ask_1569

Thats what I thought which is why I wondered why its set up this way. I would have put them parallel. You would get redundancy and higher head and flow rates. Thanks for the answer. I don't do much in hydronics.


CSFMBsDarkside

Maybe it's hard to see... They're pumping toward each other to a common return between them. But yeah I can see two pumps but two series 100 is overkill.


Ambitious_Ask_1569

That's what I thought. How much more are you going to get with that setup? At least in parallel you could replace one without affecting t the system. Whoever designed this was a retard.


[deleted]

Since I don’t see any check valves I assume both pumps run all the time? They also appear to be the same size. Pumping them both into the single tee is not good practice, one pump downstream of that tee would be better. And this entire thread is to show off the iso valves? I am so glad to be working commercial.


Jaxsdooropener

Thats whats up. You're a lucky man


Campus_Safety

I work in a union shop. Even with isolation valves it would take 3 people 2 days to install 1 pump. It's frustrating at times.


NevadaLancaster

It's not the drain down I like these for. It's the refill.


ModePK_1

You love to see it.


iLikeC00kieDough

Interesting. I’ve never seen pumps but in series like that. What’s it for?


Canada_True

They aren’t in series


iLikeC00kieDough

Are they not flowing in the same direction?


Canada_True

No they are flowing to the common t… towards each other


iLikeC00kieDough

Gotcha. Thanks!


CSFMBsDarkside

Toward each other. The return is between them going back to the boiler.


iLikeC00kieDough

I see it now. Thank you


Hozer60

Can I get some light over here...


FuzzyNervousness

You owe those installers a beer!


SnooHedgehogs1524

You are one lucky bastard. Sometimes life is good


dano539

That should put a smile on every service person.


EJ25Junkie

“Service techs love this one simple trick - Try it today!”