Replacement DOS dosing head alternative

[alindell]

One of my Orange dosing head units on my Neptune DOS doesn't work properly. It's not intaking any fluid. I used another dos head from a spare one I had laying around and it works again. I figure it is just the tubing or wheel. After looking up replacement heads they are $40 for one. Seems steep for something that is flimsy plastic and rubber, but it is what it is.

Before I buy a brand new head to replace the one I used. I want to know if there is anyone that can find an off brand that's cheaper? I'm assuming Neptune orders these from somewhere for cheap and has orange plastic face front to make it go along with their color scheme. Or if there is a reliable way to just replace the wheel and tubing that won't cause any problems with the unit? Any advice for alternatives?

 

[lakai]

They're made by

Dongguan Honlite Industrial Co., Ltd.​

but you won't find any for cheaper than $40. If its just the tube that is busted you can just replace that.

 

[alindell]

Wonder if these would work. I don't know enough about the specs of f the pump

 

[dangles]

They're made by

Dongguan Honlite Industrial Co., Ltd.​

but you won't find any for cheaper than $40. If its just the tube that is busted you can just replace that.

I can’t access that site for some reason.

I just wish I could find a replacement motor that doesn’t sound like a broken garbage disposal.

 

[alindell]

I think the issue is shipping. It's really expensive. Even though the parts are cheap. The only way to make it work would be a massive order

 

[Enderg60]

Just buy the $40 head. You can get them off aliexpress but shipping is $50 so why bother.

You can also get the motor and head off there for about $110 shipped, but at that point your half way to a used DOS

 

[alindell]

Yah, now I feel like I'm getting ripped off by Neptune lol. It's a $10 replacement assembly that sells for quadruple the price in the states. If only shipping wasn't so much. I saw a kamoer fx STP wifi pump for $100. Usually goes for $329. Gotta love cheap Chinese products supplying the companies of America

 

[Enderg60]

Yah, now I feel like I'm getting ripped off by Neptune lol.

You are 100% getting ripped off. But to be fair thats true of literally everything these days.

 

[lakai]

Yah, now I feel like I'm getting ripped off by Neptune lol. It's a $10 replacement assembly that sells for quadruple the price in the states. If only shipping wasn't so much. I saw a kamoer fx STP wifi pump for $100. Usually goes for $329. Gotta love cheap Chinese products supplying the companies of America

If you really want to get ripped off buy their $30 optical sensors that cost about $1 if you make on your own.

 

[Varmette]

Out of curiosity, how long approx are peoples DOS heads lasting?

 

[A_Blind_Reefer]

Avast marine sells a replacement rotor and the tubing can be bought by the foot from us plastics. Perfect time to upgrade to the John guest quick disconnects while you rebuild the head too, as well as flush out your dosing lines (especially for awc as deposits clog the lines over time). I keep two spare heads at all times. That way I can just hot swap when needed. I replace my awc heads once a year and my dosing heads every other year. Rollers last several years for me on my awc, it’s really only the tubing that I replace.

1/8" ID x 1/4" OD x 1/16" Wall PharMed® Tubing | U.S. Plastic Corp.

Ideal for fermentation, synthesis, separation, purification, control systems, process monitoring, and protecting sensitive cell cultures....

www.usplastic.com

Replacement Pump Roller

If you need this part for your AVAST Marine peristaltic pump, please email us. We do have them available. We do not have sufficient inventory to sell them for the DOS any longer. Roller assembly for our peristaltic pumps. This 4 roller head is also compatible with Neptune DOS pumps.

www.avastmarine.com

4 PACK - 1/4" x 1/8" nptf Female Adapter WHITE (Apex DOS Fitting) - Mur lok

Shop The Best Saltwater Aquarium Equipment & Supplies at Saltwater Aquarium. We Carry Everything you will Need for your Fish Tank.

www.saltwateraquarium.com

 

[98315351]

Avast marine sells a replacement rotor and the tubing can be bought by the foot from us plastics. Perfect time to upgrade to the John guest quick disconnects while you rebuild the head too, as well as flush out your dosing lines (especially for awc as deposits clog the lines over time). I keep two spare heads at all times. That way I can just hot swap when needed. I replace my awc heads once a year and my dosing heads every other year. Rollers last several years for me on my awc, it’s really only the tubing that I replace.

1/8" ID x 1/4" OD x 1/16" Wall PharMed® Tubing | U.S. Plastic Corp.

Ideal for fermentation, synthesis, separation, purification, control systems, process monitoring, and protecting sensitive cell cultures....

www.usplastic.com

Replacement Pump Roller

If you need this part for your AVAST Marine peristaltic pump, please email us. We do have them available. We do not have sufficient inventory to sell them for the DOS any longer. Roller assembly for our peristaltic pumps. This 4 roller head is also compatible with Neptune DOS pumps.

www.avastmarine.com

4 PACK - 1/4" x 1/8" nptf Female Adapter WHITE (Apex DOS Fitting) - Mur lok

Shop The Best Saltwater Aquarium Equipment & Supplies at Saltwater Aquarium. We Carry Everything you will Need for your Fish Tank.

www.saltwateraquarium.com

Can the motors themselves be purchased anywhere?

 

[A_Blind_Reefer]

Can the motors themselves be purchased anywhere?

Someone found them on alibaba awhile back. I think they were around $50. You’d have to search the forum for that post/thread

 

[SteveMM62Reef]

My Dosing on the Left Intermittently worked. Replaced the Motor that included the head, for about 10.50 on Amazon. Had to do a bit of Soldering.

 

[dangles]

My Dosing on the Left Intermittently worked. Replaced the Motor that included the head, for about 10.50 on Amazon. Had to do a bit of Soldering.

Got a link? How has it been working?

 

[SteveMM62Reef]

You’re going to have to open the Doser up and Compare the Motors.

 

[frasers4th]

Avast marine sells a replacement rotor and the tubing can be bought by the foot from us plastics. Perfect time to upgrade to the John guest quick disconnects while you rebuild the head too, as well as flush out your dosing lines (especially for awc as deposits clog the lines over time). I keep two spare heads at all times. That way I can just hot swap when needed. I replace my awc heads once a year and my dosing heads every other year. Rollers last several years for me on my awc, it’s really only the tubing that I replace.

1/8" ID x 1/4" OD x 1/16" Wall PharMed® Tubing | U.S. Plastic Corp.

Ideal for fermentation, synthesis, separation, purification, control systems, process monitoring, and protecting sensitive cell cultures....

www.usplastic.com

Replacement Pump Roller

If you need this part for your AVAST Marine peristaltic pump, please email us. We do have them available. We do not have sufficient inventory to sell them for the DOS any longer. Roller assembly for our peristaltic pumps. This 4 roller head is also compatible with Neptune DOS pumps.

www.avastmarine.com

4 PACK - 1/4" x 1/8" nptf Female Adapter WHITE (Apex DOS Fitting) - Mur lok

Shop The Best Saltwater Aquarium Equipment & Supplies at Saltwater Aquarium. We Carry Everything you will Need for your Fish Tank.

www.saltwateraquarium.com

Are the John Guest fittings to the tips of the heads really worth it?

 

[A_Blind_Reefer]

Are the John Guest fittings to the tips of the heads really worth it?

Technically totally unnecessary but worthwhile all the same. Super quick and easy to swap heads, flush lines, calibrate. Really, how often do I disconnect the lines…. Like once a year max. Do I regret spending the money for those fittings after three years, absolutely not. Worth every penny for me. One could go without them forever, but they sure are convenient.

 

[frasers4th]

Technically totally unnecessary but worthwhile all the same. Super quick and easy to swap heads, flush lines, calibrate. Really, how often do I disconnect the lines…. Like once a year max. Do I regret spending the money for those fittings after three years, absolutely not. Worth every penny for me. One could go without them forever, but they sure are convenient.

Thank you I’m probably gonna make the change.

 

[MrLargo]

Avast marine sells a replacement rotor and the tubing can be bought by the foot from us plastics. Perfect time to upgrade to the John guest quick disconnects while you rebuild the head too, as well as flush out your dosing lines (especially for awc as deposits clog the lines over time). I keep two spare heads at all times. That way I can just hot swap when needed. I replace my awc heads once a year and my dosing heads every other year. Rollers last several years for me on my awc, it’s really only the tubing that I replace.

1/8" ID x 1/4" OD x 1/16" Wall PharMed® Tubing | U.S. Plastic Corp.

Ideal for fermentation, synthesis, separation, purification, control systems, process monitoring, and protecting sensitive cell cultures....

www.usplastic.com

Replacement Pump Roller

If you need this part for your AVAST Marine peristaltic pump, please email us. We do have them available. We do not have sufficient inventory to sell them for the DOS any longer. Roller assembly for our peristaltic pumps. This 4 roller head is also compatible with Neptune DOS pumps.

www.avastmarine.com

4 PACK - 1/4" x 1/8" nptf Female Adapter WHITE (Apex DOS Fitting) - Mur lok

Shop The Best Saltwater Aquarium Equipment & Supplies at Saltwater Aquarium. We Carry Everything you will Need for your Fish Tank.

www.saltwateraquarium.com

Thank you so much for this post and listing the tubing! This seems to be the only part of my DOS that needs replacing and this is way easier and cost effective.