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Author Topic: pumps  (Read 876 times)

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Offline goldseeker1

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pumps
« on: March 31, 2019, 11:30:49 AM »
i have a 2"pump..can i reduce the intake to 1.5" without hurting the pump itself.i reduced the out take to 1.5"...ken

Offline Davidloc

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Re: pumps
« Reply #1 on: March 31, 2019, 11:41:21 AM »
What kind of water pump is it ? Trash , Semi trash ? What are the impeller and pump body made of. Is the pump designed to support pressure on the discharge side. Will you be running it at full throttle and for what length of time ? Does it have a high duty cycle ? You can always give the model here if its a common one as someone here has probably used it before.

Offline garth64

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Re: pumps
« Reply #2 on: March 31, 2019, 12:04:46 PM »
There has been a long standing conversation  weather or not we could use a 2 inch pump with a smaller intake, you could make an  inlet with 2  1 1/2 inlets , is it allowed is the question.

Offline Davidloc

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Re: pumps
« Reply #3 on: March 31, 2019, 12:35:25 PM »
I think the question is to get around the restriction of a 1 1/2 intake/discharge max even if necked down. I never understood this restriction except that it was some bureaucrat that got bored and made up a new rule.

Offline goldseeker1

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Re: pumps
« Reply #4 on: March 31, 2019, 02:55:51 PM »
honda gx160..multiquip

Offline goldseeker1

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Re: pumps
« Reply #5 on: March 31, 2019, 03:01:43 PM »
dont know  if it is a trash or semi trash,body looks like it is aluminum

Offline goldseeker1

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Re: pumps
« Reply #6 on: March 31, 2019, 03:03:51 PM »
model qp-2th

Offline Davidloc

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Re: pumps
« Reply #7 on: March 31, 2019, 03:25:21 PM »

Yes it can be necked down but don't run it full throttle. 211 GPM won't happen with a 1 1/2 opening and it will strain the bearings on the pump and on the motor.


From Honda,
   

Lightest trash pump in the Multiquip fleet.
    Dual 2-inch discharge ports.
    MAX Solid discharge size: 1-inch diameter.
    Pumps up to 211 gallons (800 liters) per minute.
    Improved mechanical (silicone/silicone) seal.
    Reliable 4.8HP Honda GX160 engine.
    Low engine oil shutdown.
    Aluminum body with cast-iron fittings.
    Easy clean-out cover.
    Tubular Steel frame for transportation and pump protection.
    Cast Iron impeller and volute for abrasion resistance/long life.


Offline goldseeker1

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Re: pumps
« Reply #8 on: March 31, 2019, 04:19:57 PM »
tks davidloc

Offline mcbain

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Re: pumps
« Reply #9 on: March 31, 2019, 06:18:57 PM »
Hi.By reducing your in and outs you are simply reducing the water volume.You get less volume but more pressure.I have never seen that hurt a pump but david is right you can throttle way back and reduce your fuel consumption a lot.On any pump only run it at what you need.Just saying.Luck,Mcbain.
I started out with nothing Istill have most of it.

 


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