Operating Temperature Control (All Sizes) Zoom

Operating Temperature Control (All Sizes)


Brand: Weil Mclain

Weil Mclain
Qty Price
/ each
In Stock! Ships in 24-48 Hours
(2 Available)


Connection Size: 3/4"
Connection Type: Threaded
Temperature Range (F): 140°F to 240°F
Accessory For: CG Boilers
CGa Boilers
CGi Boilers
CGs Boilers
CGT Boilers
CGx Boilers
EG Boilers
EGH Boilers
PFG Boilers

Description for Weil Mclain 510-312-250

Weil McLain operating temperature control for boiler models (all sizes): EGH, EG, CG, PFG, CGx, CGA, CGi, CGT, CGS

Features and Specifications:

  • SPST
  • Automatic recycle
  • 140°-240°F Range
  • 30°F Fixed Differential
  • With 3/4" N.P.T. control well

Operating Temperature Control (All Sizes)


by PowerReviews
Weil MclainOperating Temperature Control (All Sizes)

(based on 1 review)

Ratings Distribution

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  • 1 Stars



Reviewed by 1 customer

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(1 of 1 customers found this review helpful)


is it or is not

By Jim Smith

from CT East Heaven

Verified Buyer



      Best Uses

        Comments about Operating Temperature Control (All Sizes):

        The Temperature Control came.. it's easy to swap with the old one that went out. However, the new controler is off by about 10 degres. so if i want the water in the boiler to be @ 180 i have to move the adjuster to 190. My water temp guages are new, and I also used my digital meter, both point out to a bad controler that i just got it. It's not a big deal to me, will swap with the new one again, once winter is over.

        • Primary use:
        • Personal

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        2 Questions | 2 Answers
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        • Operating Temperature Control (All Sizes)


          Is Weil Mclain 510-312-250 high limit control a suitable replacement for a Honeywell L4080D high limit Aquastat control? This is installed on a Bryant hydronic heating system.
          Asked on 10/8/2012 by Len from Muskegon, MI

          1 answer

          • CUSTOMER CARE


            If your full model number is L4080D1036, then yes, the 510-312-250 is a suitable replacement.

            Answered on 10/18/2012 by PexSupply Staff from NY
        • Operating Temperature Control (All Sizes)


          My temp control on my boiler is set at 170 and the temp has to drop down to 120 before it comes back on is this a normal operating range?
          Asked on 11/27/2010 by Anonymous

          1 answer

          • CUSTOMER CARE


            No, this is not a normal operating range. For a normal operating range, you want to have a 20 degree difference. For example, if the temperature control on your boiler is set at 170 degrees F, the temperature should drop down to about 150 degrees F before coming back on.

            Answered on 12/1/2010 by PexSupply Staff from NY
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