Description
Comparison points and tradeoffs
When comparing Repair/Rebuild Parts Kit for Harris Model 25 & 29 Regulator w/Diaphagm with other Gas Regulators options, use this source-backed detail as the primary discriminator: Product identity: Repair/Rebuild Parts Kit for Harris Model 25 & 29 Regulator w/Diaphagm.
Use this second fact to evaluate the tradeoff: Important: The Harris Model 25 series has been updated over the years. The newer Harris 25 models use an encapsulated seat assembly (Cartridge). The older Harris 25 models have a seat assembly that is consist of several individual parts. This repair kit is for the older models. A third point to compare across alternatives is: Diaphragm (15).
Alternative-selection boundary
Choose an alternative when its stated identifiers, application, package, or specifications better match the requirement; no unverified competitor claim is introduced here.
Complete source-backed product details
Important: The Harris Model 25 series has been updated over the years. The newer Harris 25 models use an encapsulated seat assembly (Cartridge). The older Harris 25 models have a seat assembly that is consist of several individual parts. This repair kit is for the older models.
Source product highlights
- Valve Seat (12) **See note below**
- Diaphragm (15)
- Slip Ring (16)




Jim B. –
This is a quality product I used to repair my oxygen regulator and it saved me a lot of $$$. Highly recommend.
Justin –
Super easy install. Look on YouTube for a video. Do this at your own risk cuz you could blow yourself up if you don’t follow directions well. Otherwise, this kit worked great to fix my old set of regulators.
Mark Johnston –
The ad said it fits a Harris model 25 but it does fit mine. The brass part is not the same. Mine screws in this one doesn’t not. Easy to return and got refund. I hoped to fix mine for $35 put ended up buying a whole new regulator/gauges set up for $110. Oh well.
D Lindy –
I purchased my regulators #25 over 50 years ago and figured no way they are repairable. The kit fit perfectly and had one part left over likely for a newer model. Very simple to repair. watch the youtube video of course.
Alan –
Very nice kit. BUT DO NOT LOOSE THE VERY SMALL PIN IT IS NOT INCLUDED IN THE KIT
Dan –
Perfect fit for my old Marquette (Harris 25’s) oxygen and acetlyne regulators! Fixed my leaking acetylene regulator and rebuilt my oxygen regulator as well (which still functioned but had the original diaphragm and inner seal). Great cost for peace of mind when working with a potentially dangerous tool!