Gail High pressure pumps

B

beyoungsr

New member
Anyone know where I can find some info on theses pumps.

An associate gave me a used one that had previuosly been used in a car wash.

This design has exposed pistons with sliding seals on them.

This pump was made in Japan and was manufactured by Yamar diesel.
Painted red and looks H.D. Age maybe 10-15 years old.

Running when removed.

Has a pulsation damper and an accumaltor mounted on the pump head. Also has 8" double belt pulley on it.

Looks similar to a Cat pump. Maybe a predecessor to Cat

Can't find any info on the net.
 
Last edited:
Great pumps, just got too expensive for a lot of people to use...

Gail Pumps

555 17th St.
Marion, IA 52302

Tel: 319-377-0918
Fax: 319-377-1272

Hope this helps? Cheers.
 
Gail Pumps 319-377-0918 1040 E Post Rd Marion IA 52302
 
Thanks to all for the info.

I was about to toss this pump.

9 gpm 800 psi and parts are available

Have to see how big a motor or engine I will need

Thanks again!
 
Pulleys and Pumps and all of the Math



There is a lot of math involved in changing from one brand of pump to another and changing the output of your pump. Before you upgrade to a higher PSI or GPM pump you must know if your motor or engine can handle the change. Use the formulas below as needed. As you can see the math lessons that you didn’t like in school come in handy here. Who would have thought there was so much math involved in Pressure Washer Design. This is just touching the surface.
Here are a few Formulas For Pressure Washers that may come in handy.

Electric Motor: HP = GPM x PSI / 1460
Gas Engine Industrial: HP = GPM x PSI / 1100


Information needed to substitute a pump



Old Pump Rated PSI ______________ New Pump Rated PSI ______________
Old Pump Rated GPM ______________ New Pump Rated GPM ______________
Old Pump Rated RPM ______________ New Pump Rated RPM ______________
Old Pump Pulley Size ______________ New Pump Pulley Size ______________
Old Pump Shaft Size ______________ New Pump Shaft Size ______________
Motor or Engine HP ______________ Motor or Engine Pulley Size ___________
Motor or Engine RPM ______________ Motor or Engine Shaft Size ___________



If old pump specs don’t match exactly you must change something to make them match up. Here is the way I do it.

(1) Find the existing Pulley Ratio: Old Pump Pulley Size ¸ Motor Pulley Size =Existing Pulley Ratio ___________
(2) Find Existing Pump RPM: Motor RPM ¸ Existing Pulley Ratio (from step1) = Existing Pump RPM ___________
(3) Find Existing GPM: Rated RPM ¸Rated GPM = Pump Ratio ___________ Existing Pump RPM (from Step 2) ¸ Pump Ratio (above) = Existing GPM __________
(4) Find Desired RPM:Rated GPM of the New Pump ¸ Rated GPM of the Old Pump =New Pump Ratio _______Existing GPM (from step 3) x New Pump Ratio (above) = Desired RPM __________
(5) Find New Pulley Ratio:Motor RPM ¸ Desired RPM (from step 4) = New Pulley Ratio __________
(6) Find New Pulley Size: (Change only one.) I usually go with the motor Pulley if I can. It’s Cheaper.New Motor Pulley:pump Pulley Diameter ¸ New Pulley Ratio (from step5) = New Motor Pulley DiameterNew Pump Pulley Size:Motor Pulley Diameter ¸ New Pulley Ratio (from step5) = New Pump Pulley Diameter
(7) Check your math by using step 1 with your New Pulley Diameter and the remaining Old Pulley Diameter.


John DeRosa
 
The way I figure it an 11hp Honda Should power it just fine if you use the right pulleys.
 
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