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Sta-Rite HP7E rebuildable?

G

GoBuckeyes

Self-Serve and Automatics
I'm also having problems with a StaRite booster pump but didnt want to hijack Buzzie's thread.

I'm using a StaRite HP7E to run water through an injector system for my automatic. At one location, my pumps working pressure has dropped from 160 psi through my injectors to 120psi. I have looked into everything including water feed pressure, regulator, and a possible solenoid not fully closing. I have determined it to simply be the pump. While it runs smoothly and has no abnormal sounds, it will only produce 160psi when deadheaded. This model is rated at 6 gpm @ 195 psi.

Can this pump be rebuilt at a reasonable cost, and if so, how do they last?

If it cannot, will this pump catastrophically fail or just gradually lose pressure boosting ability?

Thanks
 
Booster pumps are pretty simple devices. Inside it is just a bunch of plastic impellers stacked together on a rod. If it has ever been run dry, the impellers start to wear and the pump won't run at full pressure. It probably needs a new Stack Kit. They usually run between $300-400. You will also need a new shaft seal. Its an easy repair.

Parts
 
Thanks Jon. I'll defintiely look into it. I've already ordered a new pump, but would love to have one on the shelf as a spare.
 
Wow... Thanks again Jon for the info. Just wanted to give everyone an FYI. That web site you sent me to, PumpAgents.com, is INSANELY expensive.

They wanted $1208 for the whole pump which I had just bought from Dultmeier for $535. I just ordered the stack kit and shaft seal from Dultmeier for about $255, whereas PumpAgents wanted $445.

I guess business is good for PumpAgents if anyone actually buys from them!
 
I took one apart and thought of rebuilding it. However, I shopped around and got a Dayton for about $500, so rebuilding with all those plastic impellers for $100 less? No thanks.
 
GoBuckeyes said:
Wow... Thanks again Jon for the info. Just wanted to give everyone an FYI. That web site you sent me to, PumpAgents.com, is INSANELY expensive.

They wanted $1208 for the whole pump which I had just bought from Dultmeier for $535. I just ordered the stack kit and shaft seal from Dultmeier for about $255, whereas PumpAgents wanted $445.

I guess business is good for PumpAgents if anyone actually buys from them!
Click to expand...

That was just the first one that popped up when I googled. I knew that a smart CW operator would find a better deal.:);)
 
Waxman said:
I took one apart and thought of rebuilding it. However, I shopped around and got a Dayton for about $500, so rebuilding with all those plastic impellers for $100 less? No thanks.
Click to expand...

The stack comes already assembled. All you do is pull the old one off and slide the new on one. Easy as pie.:D Same as the shaft seal, a two minute job.
 
Glad you posted Go Bucks. I was going to ask if I could rebuild the pump that Sta-Rite I took off last week. As mentioned, I replaced with Gould, nice and quiet and working good! All for $800+ when you include shipping from Dultmeirs. Where do you order replacement parts/stacks for the Sta-Rite?
 
Buzzie,
Call Dultmeier back again and get the stack kit and shaft seal from them. That's who I ordered my replacement pump and parts from.
 
Going to order a stack kit for my Sta-Rite tomorrow. Hopefully it is as easy as stated earlier in this thread. Any insight from anyone who has done it would be greatly appreciated!
 
Buzzie, apparently the difficulty is going to be determined by your pump. If you took a brand new sta-rite and tried to swap out the stack kit it would take longer to find your tools than it would to change it. Unfortunately for me, my pump was 7 yrs old and didn't want to come apart very easy.

Make sure you read the directions thoroughly. The bottom cap to the pump is reverse threaded as is the pump body/motor base union. My pump body wouldn't release from the motor base without some serious effort. I had a vice and a large pipe wrench and still ended up needing some torch heat. I was afraid of crushing the pump body with the pipe wrench.

When I finally did get the pump completely apart, I found the cast iron portions were filthy and had a lot of build up that needed to be scraped or chipped off.

Putting the pump and new parts back together went much faster. All in all, not overly complicated but it was much more of a job than I anticipated, especially after reading Washmees post....2 minutes my a**! :eek:
 
Buzzie8 said:
Going to order a stack kit for my Sta-Rite tomorrow. Hopefully it is as easy as stated earlier in this thread. Any insight from anyone who has done it would be greatly appreciated!
Click to expand...

Buzzie, did you find out what is causing your pump problems?
 
Not yet, both Gould's are being sent back to the factory to see what is going on with them. I pulled the stack kit out of my Sta-Rite today and it came apart pretty easily. I still have not ordered the new stack kit because I was hearing a metal on metal sound when the pump started up and I could not find any worn parts on the old sta-rite. Trying to decide what to do. Really do not want to pay for a third pump.
 
Washmee said:
Any updates on your pump problem?
Click to expand...

I installed the new stack kit and realized I made a mistake. There was one loose "disk" which is called a "cap". The order is "cap", "Impeller", "Diffuser". I put the cap on the end of the pump and it should slide over the shaft and be on the end near the motor. My gould pumps are being evaluated now and I do not have answers yet. I am going to rebuild old Sta-Rite pump again today or tomorrow.
 
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