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Is there a more accurate Pressuretrol?

Bodycount
Bodycount Member Posts: 35
edited September 6 in Strictly Steam


I have this style / model Honeywell Pressuretrol. 

If I engage the adjustment screw approximately 1 turn or less so it doesn’t pull out, the pressure will reach 4.5 psi. 

If I disengage the screw so it’s at its lowest setting (basically deactivated) it will reach 1.5 psi. 

The diff is at 1. 

I’d like to replace the unit with a more accurate unit so I can keep it at 0.5-1 psi. 

Thanks in advance. 

Tom. 

Comments

  • mattmia2
    mattmia2 Member Posts: 5,999
    Vaporstat. Put it in series with the pressuretrol so the pressuretrol acts as a backup.
    Bodycount
  • 109A_5
    109A_5 Member Posts: 276
    Hello @Bodycount,

    As @mattmia2 stated a Vaporstat 16 Oz and less, is probably the most common addition. If you are tripping out with pressure you may want to add a delay timer too. Also Dwyer makes a variety of low pressure switching devices.

    I played with my Pressuretrol a bit since I read some folks just removed the spring, but that may have created erratic cycling, so I did this, an easy modification. Come to find out, in my case the EDR is greater than the boiler rating so my system never makes pressure more than a few inches of water column. So my Pressuretrol is just a safety device.




    National - U.S. Gas Boiler 45+ Years Old
    Steam 300 SQ. FT. - EDR 347
    One Pipe System
    BodycountEdTheHeaterMan
  • ethicalpaul
    ethicalpaul Member Posts: 3,759
    As it ideally should be!
    1 pipe Peerless 63-03L in Cedar Grove, NJ, coal > oil > NG
    EdTheHeaterMan