How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Pitsch Plumbing Your Own Question

Pitsch Plumbing
Pitsch Plumbing, State Certified Plumbing Contractor
Category: Plumbing
Satisfied Customers: 367
Experience:  25 years in the trade. new Construction, remodeling, repairs ect. Business owner. 2nd gen plumber
39094895
Type Your Plumbing Question Here...
Pitsch Plumbing is online now
A new question is answered every 9 seconds

replacing control valve on A.O. smith water heater FGR 50 236 existing

Resolved Question:

replacing control valve on A.O. smith water heater FGR 50 236
existing valve: part# XXXXX (new # XXXXX A= 2 1/2", 1/2" psi, nat reg 3.5"
can I install the following slightly different valve:
part # XXXXX (new # XXXXX A= 2 5/8", 1/2" psi, nat reg 4"
Thanks,
Eric
Submitted: 4 years ago.
Category: Plumbing
Expert:  Pitsch Plumbing replied 4 years ago.
Chat Conversation Started
Pitsch Plumbing :

Hello. Give me just a minute to look up you heater.

Pitsch Plumbing :

Actually that unit came stock with a 180193-4

Pitsch Plumbing :

Anyways, yes you can, you can even go with a unitrol that has adjustable pilot. But to answer your question. Yes, it will be fine.

Pitsch Plumbing :

The A measurement is the shaft length, so 2.5 to 2 5/8 is fine

Customer:

so the 'A' dimension being 1/8" longer and the reg setting of 4" rather than 3.5" is OK?

Pitsch Plumbing :

Yeah, the burner tray might sit 1/16 of an inch out, but you also have to understand, that length also depends on how tight the valve is scrweed in too.

Pitsch Plumbing :

The pilot tube and therocouple are soft tube

Pitsch Plumbing :

1/16 of an inch from where it previously was is what im meant to say

Pitsch Plumbing :

We are a warranty station for A.O Smith and have never had an issue replacing old gas valves with new ones

Customer:

does that make sense regarding it being the problem. that is, pilot stays on until temp setting is set to high?

Pitsch Plumbing :

Yes, if its not turing off at the set temp, the therostat has failed.

Pitsch Plumbing :

What the part is called is a combination gas valve ( its the valve and t-stat) in one unit.

Pitsch Plumbing :

or are you saying that when you turn up the temp instead of heating the pilot just goes out.

Customer:

when installing, can i use teflon tape or do i need plumber's paste?

Pitsch Plumbing :

teflon tape is fine, i believe they come with teflon tape already on them. I would also replace the thermocouple while you have it apart.

Customer:

No, when i set the temp to high, the pilot and burner stays on but once the water reaches temp, then when burner shuts down, so does pilot. Pilot works fine when i lower temp to about med high.

Pitsch Plumbing :

Yeah, sounds like the t-stat is failing. When the heater is set to high the water temp should be absolutely scalding hot. 150+ deg. after a while they can go out of range.

Pitsch Plumbing :

Soundslike its thinking its too hot and turning off

Customer:

i am using a valve from a friends relatively new water heater that had a tank problem leak. should i worry that the tank failed because the valve let the water get too hot/pressurized?

Pitsch Plumbing :

is the gas line flexible tube, like copper (supply connected to heater) or hard pipe. ? I wouldnt worry, if that water gets to hot, the T&P should open.

Pitsch Plumbing :

On your friends heater,

Pitsch Plumbing :

Generally, a bad gas valve wont cause a tank to fail

Customer:

flexible copper

Pitsch Plumbing :

ok, then you will be fine, the reason i asked is the new gas valve isnt as wide as the old one so the gas connection is about a 1/2" away from where the old one was, with flexible tube, thats nothing, but with hard pipe it can be a pain

Customer:

Oops, yah it is a hard pipe. Just measured, probably less than 1/4" difference.OK, thanks. XXXXX can get a few more years out of my unit. Can't afford new one now.

Pitsch Plumbing :

Good luck, you should be just fine

Pitsch Plumbing :

If you are satisfied with my answer, please hit accept. :)

Pitsch Plumbing, State Certified Plumbing Contractor
Category: Plumbing
Satisfied Customers: 367
Experience: 25 years in the trade. new Construction, remodeling, repairs ect. Business owner. 2nd gen plumber
Pitsch Plumbing and other Plumbing Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future. Jimmy Bagley, IA
< Last | Next >
  • You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future. Jimmy Bagley, IA
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • Marc

    Plumber

    Satisfied Customers:

    996
    Plumbing heating & home maintenance contractor
< Last | Next >
  • http://ww2.justanswer.com/uploads/VE/Veillplumb/2011-8-31_155028_IMG1104.64x64.JPG Marc's Avatar

    Marc

    Plumber

    Satisfied Customers:

    996
    Plumbing heating & home maintenance contractor
  • http://ww2.justanswer.com/uploads/plmqwk/2010-08-28_151844_profile_pic.jpg Plmqwk's Avatar

    Plmqwk

    Master Plumber

    Satisfied Customers:

    850
    20+ years in plumbing field. Licensed master plumber, commercial plumbing inspector
  • http://ww2.justanswer.com/uploads/JE/jerrymassie/2011-1-15_45937_1111055.64x64.JPG Jerry's Avatar

    Jerry

    Plumber

    Satisfied Customers:

    777
    over 20 years residential plumbing experience.
  • http://ww2.justanswer.com/uploads/PL/plumber171/2011-8-13_11445_plumber.500x500.64x64.jpg Mario's Avatar

    Mario

    Master Plumber

    Satisfied Customers:

    604
    Master Plumber, Fire Sprinkler, and Jobbing Spec.
  • http://ww2.justanswer.com/uploads/ABSBoss/2009-03-25_163017_2007-1031_046.jpg Bud's Avatar

    Bud

    Plumber

    Satisfied Customers:

    538
    22 Years Field Experience - 17 Years Business Ownership - Residential or Light Commercial
  • http://ww2.justanswer.com/uploads/TH/theplumber717/2011-11-24_34039_DSCF7012.64x64.JPG Theplumber717's Avatar

    Theplumber717

    Plumber, Hvac Tech

    Satisfied Customers:

    520
    Lic Plumbing contractor, 27/yrs res,com,repair,Universal HVAC Tech
  • http://ww2.justanswer.com/uploads/skibum0101/2008-12-16_015819_just_answer.jpg Rick Mather's Avatar

    Rick Mather

    Building Inspector

    Satisfied Customers:

    494
    Assistant Building Official, HVAC Tech
 
 
 
Chat Now With A Plumber
Pitsch Plumbing
Pitsch Plumbing
Certified Plumbing Contractor
177 Satisfied Customers
25 years in the trade. new Construction, remodeling, repairs ect. Business owner. 2nd gen plumber