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Thread: Stenner Pump Question

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    Stenner Pump Question

    I'm in the midst of automating my pool. Last year I did the manual addition of liquid bleach and bleach turning the pump on and off by hand. This year I've assembled a controller (old PLC and HMI) that will allow me the 'schedule' pump running along with running a Stenner pump to add the chlorine. However, as I was selecting a pump (45MHP10, adjustable from 1/2 to 10 GPD) I was confronted with a choice: 1/4 or 3/8" tubing size. The 3/8 causes the price to go from $299 to $312. What's the difference? What do other people choose? Thanks for the help.
    44 x 20
    33,700 ga
    Hayward 1HP pump
    Hayward inline clorinator
    Sand filter

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    Mod Squad Bama Rambler's Avatar
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    Re: Stenner Pump Question

    Go with the 1/4" it's more than big enough for 10 gallons per day. You're not pumping grease or mayonnaise so you don't need the 3/8ths.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Stenner Pump Question

    Thanks, 1/4 it is. Whilst waiting I found a good price on one: $164 + shipping at Wastewater Treatment Supply.

    Now, a pool full of mayo, hmm.....
    44 x 20
    33,700 ga
    Hayward 1HP pump
    Hayward inline clorinator
    Sand filter

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    Re: Stenner Pump Question

    Quote Originally Posted by WildeKurt
    Thanks, 1/4 it is. Whilst waiting I found a good price on one: $164 + shipping at Wastewater Treatment Supply.

    Now, a pool full of mayo, hmm.....
    That's a great price! Can you post the URL please?
    15,600 Gallon, 16' x 32' In-Ground Vinyl Pool
    Pentair VS 3050 pump, Quad DE 60 filter and SunTouch controller
    8 gallon Liquidator, Aquatherm EcoSun Solar Panels, 2 wheel ThePoolCleaner

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    JasonLion's Avatar
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    Re: Stenner Pump Question

    I'm seeing $264 here, which is the best price I have seen.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Re: Stenner Pump Question

    Yeah that seems more likely. Thanks for the link. And still a great price too.
    15,600 Gallon, 16' x 32' In-Ground Vinyl Pool
    Pentair VS 3050 pump, Quad DE 60 filter and SunTouch controller
    8 gallon Liquidator, Aquatherm EcoSun Solar Panels, 2 wheel ThePoolCleaner

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    Re: Stenner Pump Question

    I am a little confused on the pressure. Is the stated pressure in the specs for the pump or is it what it can handle being injected to?

    Reading my filter gauge: My normal pressure is between 18-22 psi. 25 or higher with the solar's on. Does this effect which model I order?
    20k Gunite/Prism Blue-Pebblesheen, Pentair Tagelus TA-100D Sand Filter, Heliocol Solar Water Heater, 2 bubblers and 2 waterfalls installed 2007, 3hp IntelliFlo VS Pump 011018 installed 2013, Aquabot Turbo T4 RC and Stenner 45MHP10 w/The Liquidator container installed 2012.
    Antigua Spa by Artesian Spas: 325 gl, 52 jets, 6 hp 2 sp & 6 hp 1 sp, Circulation System 24 Hour Whisper Pure, Ozonator, LED digital lighting, The Artesian Pillowfall installed 2007.
    Retired: 2hp Pentair Whisperflow, Legend Platinum w/booster pump, PH Adjuster

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    Mod Squad Bama Rambler's Avatar
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    Re: Stenner Pump Question

    They have two pressures. 100 psig and 25 psig. They're rated on the pressure they can inject into. I would suggest the 100 psi model as it comes with a check valve at the injection point. That way if a tube or tubing ruptures it won't flow pool water out of it.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Stenner Pump Question

    Thanks!

    Next question... I removed my pressure side 3/4hp 240v pump since it died. I am thinking of connecting the Stenner (the 220V version) to the timer. This timer only operates when the main pump is on. I am also thinking of using the "IN" side of the Liquidator (i.e. after the filter) as the point to inject the chlorine. Thus saving me from doing any more cutting of the PVC. Thoughts?
    20k Gunite/Prism Blue-Pebblesheen, Pentair Tagelus TA-100D Sand Filter, Heliocol Solar Water Heater, 2 bubblers and 2 waterfalls installed 2007, 3hp IntelliFlo VS Pump 011018 installed 2013, Aquabot Turbo T4 RC and Stenner 45MHP10 w/The Liquidator container installed 2012.
    Antigua Spa by Artesian Spas: 325 gl, 52 jets, 6 hp 2 sp & 6 hp 1 sp, Circulation System 24 Hour Whisper Pure, Ozonator, LED digital lighting, The Artesian Pillowfall installed 2007.
    Retired: 2hp Pentair Whisperflow, Legend Platinum w/booster pump, PH Adjuster

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    JasonLion's Avatar
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    Re: Stenner Pump Question

    That all sounds reasonable.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Mod Squad Bama Rambler's Avatar
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    Re: Stenner Pump Question

    That's exactly what I did! Used the inlet hole for the LQ for the Injection fitting.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Stenner Pump Question

    Can't the 3gpd pump deliver 10 with the bigger tube or is it just the 10gpd that can be down rated by using the smaller tube?

    Also, what size is the #1 tube? 1/4" and the #2 is 3/8"?

    http://www.lockewell.com/pdf/45series.pdf
    15,600 Gallon, 16' x 32' In-Ground Vinyl Pool
    Pentair VS 3050 pump, Quad DE 60 filter and SunTouch controller
    8 gallon Liquidator, Aquatherm EcoSun Solar Panels, 2 wheel ThePoolCleaner

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    Mod Squad Bama Rambler's Avatar
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    Re: Stenner Pump Question

    Any Stenner pump can be converted to any other flow rate by changing the tube. There are constraints as far as pressure goes. A low pressure application can use any tube but a high pressure application can only use a high pressure tube. Notice I said high pressure application not high pressure pump. A high pressure pump can use a low pressure tube as long as it's used in a low pressure application.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Stenner Pump Question

    Thanks Bama! Do you know about the tube sizes?
    15,600 Gallon, 16' x 32' In-Ground Vinyl Pool
    Pentair VS 3050 pump, Quad DE 60 filter and SunTouch controller
    8 gallon Liquidator, Aquatherm EcoSun Solar Panels, 2 wheel ThePoolCleaner

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    Mod Squad Bama Rambler's Avatar
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    Re: Stenner Pump Question

    While they're obviously some size ID & OD, they're not standard trade sizes (i.e. 1/4", 3/8", etc.). In other words, you can't use standard trade size tubing in the pump and expect it to work.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Stenner Pump Question

    Ok. I was going from what the site that I linked offered...sorry if I'm not being clear.

    I just realized I posted the wrong link above - I meant this one: http://www.lockewell.com/index.php?main ... cts_id=144
    15,600 Gallon, 16' x 32' In-Ground Vinyl Pool
    Pentair VS 3050 pump, Quad DE 60 filter and SunTouch controller
    8 gallon Liquidator, Aquatherm EcoSun Solar Panels, 2 wheel ThePoolCleaner

  17. Back To Top    #17

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    Re: Stenner Pump Question

    Oh wait I get it now. The tube sizes on the web site are for the supply and return lines, not the actual tube in the pump head.
    15,600 Gallon, 16' x 32' In-Ground Vinyl Pool
    Pentair VS 3050 pump, Quad DE 60 filter and SunTouch controller
    8 gallon Liquidator, Aquatherm EcoSun Solar Panels, 2 wheel ThePoolCleaner

  18. Back To Top    #18
    cwuffman's Avatar
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    Re: Stenner Pump Question

    Quote Originally Posted by WildeKurt
    I'm in the midst of automating my pool. Last year I did the manual addition of liquid bleach and bleach turning the pump on and off by hand. This year I've assembled a controller (old PLC and HMI) that will allow me the 'schedule' pump running along with running a Stenner pump to add the chlorine. However, as I was selecting a pump (45MHP10, adjustable from 1/2 to 10 GPD) I was confronted with a choice: 1/4 or 3/8" tubing size. The 3/8 causes the price to go from $299 to $312. What's the difference? What do other people choose? Thanks for the help.
    WildeKurt, your post indicated you are going to control injection with a PLC. Why would you then choose a variable speed Stenner pump if you can independently control time of injection? The variable speed pump is more costly and has more moving parts to maintain. The fixed speed pump is simpler, and less "on-time" would be more efficient and extend the life of the pump. Just curious.
    29,000 gal rectangular Pebble Sheen in ground pool with raised spillover spa,3hp Pentair variable speed pump, Polaris 280 cleaner with booster pump, Pentair 520 cartridge filter, Pentair Master Temp 400 heater, Stenner 45MPHP10 Peristaltic Pump, TF-100 Test Kit & Speedstir

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    Re: Stenner Pump Question

    Quote Originally Posted by carlscan26
    Oh wait I get it now. The tube sizes on the web site are for the supply and return lines, not the actual tube in the pump head.
    Here are the various tube sizes and what output they can do. As stated before, all you have to do is change your tube and you can change the output of the pump. Also, as stated before, we do have specific tubes for low and high pressure. Low pressure tubes, #s 1, 2, 3, 4, 5. High pressure #s 1, 2, 7. The number 3 and number 7 tubes will give the same output in GPD just at different pressures.

    Our website has a lot of useful info on it stenner.com
    John Nguyen, CWS I
    Sales and Applications Engineer
    Stenner Pump Company

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