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The Earthquake wp4310 - 38 gpm (1") water pump is available for purchase today.

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Earthquake WP4310 - 38 GPM (1") Water Pump

(Based on expert analysis, manufacturer ratings and customer reviews)

3.9 out of 53.9 out of 53.9 out of 53.9 out of 53.9 out of 5
56 Reviews
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  • Features
  • Specs
  • 5
    Q&A 
  • 56
    Reviews
  • Articles
  • Shipping
  • Accessories

Inlet Size
1"
Style
Dewatering Pumps
GPM
38
Gallons
Engine
Viper Engine


Product Video Disclaimer: "PED is not responsible for any variances from the product in this video and the item you purchase. Please review all product specs prior to purchase."

Powerful 43cc Pump Moves 2300 Gallons Per Hour
Ideal for emptying pools, basements, & waterlogged work sites

Lightweight And Portable-Weighs Only 14 Pounds
Easy to transport-use it at home and at work

Silicone Carbide Mechanical Seal
Dependable and longer lasting than cheaper units

Generous Warranty
1 year for residential use: 90 days for commercial use


Need Help? Call Our Water Pump Experts.
Model
Model Number:WP4310
UPC:012642431036
Manufacturer:Earthquake
Engine
Engine Brand:Viper
Starting System:Recoil Start
Engine Cycles:2-Cycle
Low Oil Shutdown:No
Continuous Operation:Yes
HP/CC:43 cc
Fuel Tank Size:.1 Gallon
Consumer Engine Warranty:1 Year
Pump
Gallons Per Minute:38 GPM
Inlet Diameter:1"
Outlet Diameter:1"
Self Priming:Yes
Pump Head Material:Aluminum
Pump Housing Drain:Yes
Quick Clean Out:No
Mechanical Seal Material:Silicon Carbide
Impeller Material:Aluminum
Solids Handling:None Inch
Suction Head:23 Feet
Total Head Lift:56 Feet
Accessories
Tool Kit:No
Strainer:Yes
Float Switch:No
Hose:Sold Separately
Hose Couplings:Yes
Hose Bands:No
Lifting Hook:No
Transport Handle:Yes
Wheel Kit:No
Overview
Weight:18 Lbs. (8.16 kilograms)
Dimensions:12"L x 13"W x 14"H
(30.48 x 33.02 x 35.56 cm)
Consumer Warranty:1 Year
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How-To Library

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  5 Questions
Q: Jim, I want to set up a portable system to use with large water tank to supply water for a power washer. Would this pump work; would I need a pressure regulator or other accessories?
by Wilson C from Virginia on March 24, 2016

A: Thank you for your interest in Water Pumps Direct. Unfortunately, we do not currently offer any pumps that would work effectively for feeding a pressure washer. The only real possibility that we could offer would be a shallow well pump with a pressure tank and pressure switch or a tankless shallow well pump like the Bur-Cam model 506532SS. You would also need to install a ball valve on the discharge to reduce the flow rate (GPM) and match your pressure washer requirements.
The gas powered pumps that we offer would flood the pump on the pressure washer due to the high GPM capacity and none of the pumps we offer will work when the pressure washer or any other nozzle would be turned off. This would create a dead head or closed discharge on the water pump and would thus burn the pump out within minutes. Your best option is to consider a belt drive pressure washer with a gravity feed to the pressure washer from your water source. If you have additional questions, please let me know.

by Jim, Product Expert
Q: Hi Jim, I'm interested in moving maple sap from remote storage locations to the main tank. My question is about suction head. The pump specification lists a total lift head of 56', is that net the 23' suction head? In other words, if I had a flooded suction or a slightly positive suction head, would that provide me with a 79' discharge head? Thanks.
by Earl W from Vermont on March 19, 2016

A: The total head lift listed in the pump specs, is the total vertical lift that the pump can handle. This includes the total suction head, so if for example, if your suction head is 12 feet, you do not want to exceed an additional 44 feet of head on your discharge side. That said, you also do not want to max out that head lift. The higher you get the that number, the less flow you will see and the more work the motor and pump are doing which equates to a shorter pump and motor life. If you currently have a flooded or slightly positive suction, you still do NOT want to exceed the 56' of head.
If you have any other questions, please let me know.
by Jim, Product Expert
Q: Can I attach a garden hose directly to the outlet port, or is an adapter needed?
by John from New York on April 25, 2015

A: The Earthquake WP4310 has a NPT 1" suction and discharge port. If you care to attach a standard garden hose to the discharge, you would need a 1" to 3/4" adapter.
by Jim, Product Expert
Q: Hi Jim I'm wanting to irrigate my farm garden approx 75 ft x 75ft with a gas powered pump I have a creek for a water source about 150 to 200 ft from my garden which type of pump would best serve my needs thanks Jim
by Phil B from Missouri on April 02, 2014

A: Thank you for your interest in Water Pumps Direct. Most any water pump would handle your application. It depends on how you plan to "water" your garden. If you are simply watering with a garden hose and NO nozzle, any 1" GAS DEWATERING PUMP would do a fine job for you. Please note that the pump should be as close to the water source as possible and you should use a good quality suction hose to insure that it does not collapse during the pumping process and a good quality strainer to prevent any debris from getting into the pump. Most any garden hose will suffice however, on the discharge side of the pump. If you prefer to use a nozzle or sprinklers, you might be better served by an electric SHALLOW WELL PUMP or a SPRINKLER PUMP or HIGH PRESSURE GAS PUMP. These pumps would provide a higher pressure or PSI that would be needed to provide better coverage and proper operation of the nozzle or sprinkler heads.
If you have additional questions, please let me know.

by Jim, Product Expert
Q: Do you sell parts for pumps
by Kevin from Pennsylvania on November 24, 2013

A: Thank you for your interest in Water Pumps Direct. While we do not offer parts for any product that we sell, you could check THIS LINK to Sears Parts Direct to see if they would carry the parts you need.
by Jim, Product Expert
Earthquake WP4310 Reviews & Ratings
Overall Rating
Features
4/5
Quality
4/5
Performance
4/5
Value
4/5
Overall
3.9 out of 53.9 out of 53.9 out of 53.9 out of 53.9 out of 5
Pros
Light Weight (18)
Price (14)
Easy To Store (11)
I'd Buy It Again (7)
Easy To Use (7)
Cons
Unreliable (6)
Difficult To Use (4)
Durability (3)
Low Quality (3)
Expensive (2)
68% of respondents would recommend this product to a friend
56 Reviews  Sort by 
 
Jim, the Water Pump Expert
Water Pump Expert

Product Expert
Total Reviews
45 Reviews
Total Helpful Votes
1143 Helpful Votes
Water Pumps Direct Recommended

If you're looking for an economical and portable water pump for home or work this pump is for you. Weighing only 13 pounds and moving up to 2300 GPH, this water pump is ideal for emptying pools, flooded basements, and water-logged job sites. Portable, powerful, and affordable...what else could you want in a water pump?
Jim Recommends This Model
Was this review helpful?
4115
Thomas A.
Terlingua, TX
Purchased from Water Pumps Direct
Purchased 6/15/15
Total Reviews
2 Reviews
Most Helpful Positive Review
REVIEWED
JUL.
08
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Shopped Long For This One
I need a pump that serves to transfer rainwater between roof catchment tanks. I also wanted a pump that could double as a fire fighting pump. The capacity of this little WP4310 1-inch pump is amazing. It was easy to set up and performed very well through its first three tanks of fuel. It certainly serves my purposes.

My only complaint is that the instruction manual was a little lacking on all the details. It covers the engine quite well but you need to have a background on pumps to hook it... more
Thomas Recommends This Earthquake Product
Was this review helpful?
31
Sam D.
Newcastle, WY
Purchased from Water Pumps Direct
Purchased 6/18/15
Most Helpful Critical Review
REVIEWED
JUL.
10
2015
1 out of 51 out of 51 out of 51 out of 51 out of 5
Not As Advertised
You say this is a 1-inch pump but you send 5/8 connections. Your ad say it will pump 2,300 gal, per minute. It pumps 300 gpm. .it is a 5/8 s inch pump.it does not have enough suction to pull water from a one inch hard plastic hose 3 ft long. I would not recommend this pump.
Cons: Unreliable
Jim, the Water Pump Expert
Product Expert
Sam,
I apologize for any confusion and inconvenience. You may be a bit confused with the advertising on our site, Sam. While the WP4310 may include 5/8" adapters, the actual male threaded fittings on the suction and discharge ports are 1". The adapters are included for your convenience only and you are NOT required to use them. The pump is advertised at 38 GPM and the features on the product page does also list the pumping capacity at 2300 Gallons Per HOUR, which equals just over 38GPM.

If your pump is not pulling water from a 3 foot long hose, please double check to insure that the pump is primed per the instructions and there are NO leaks in your pipe or anywhere in that connection. IT only takes the smallest of leaks to create this kind of problem. If you are still having problems, please call Earthquake tech support at (800) 345-6007 for further assistance and let me know if you have any other problems.
more
Was this review helpful?
71
Jonathan J.
Centre, AL
Purchased from Water Pumps Direct
Purchased 4/18/16
REVIEWED
MAY.
30
2016
4 out of 54 out of 54 out of 54 out of 54 out of 5
Great Pump
I purchased this pump for house washing,and happy with it right out of the box, I've used this pump for about 20 hrs already and very happy with it and it uses hardly no fuel. If you want a good dependable water pump,this is it. If it broke tomorrow I would buy another that day. Thanks power direct. HAPPY CUSTOMER.
Pros: Light Weight, I'd Buy It Again, Easy To Use, Durable
Jonathan Recommends This Earthquake Product
Jonathan's Experience With Water Pumps Direct
Web Site
5/5

Service
5/5

Shipping
4/5
"A must purchase pump that performs as advertised."
 more
Was this review helpful?
00
Earl W.
Plainfield, VT
Purchased from Water Pumps Direct
Purchased 3/21/16
REVIEWED
APR.
11
2016
5 out of 55 out of 55 out of 55 out of 55 out of 5
Sap Pump
I used the pump to move maple sap from storage tanks in the Sugarbush to the sugar house. The pump arrived in time for the biggest run and the pump performed very well. A little difficulty starting the second run, but once it got going, it ran very well and performed as I expected. Believe the starting issue was me learning how to use the pump. Very pleased at this point.
Earl Recommends This Earthquake Product
Was this review helpful?
00
Jeff S.
Leander, TX
Purchased from Water Pumps Direct
Purchased 8/4/15
REVIEWED
OCT.
06
2015
3 out of 53 out of 53 out of 53 out of 53 out of 5
Under Powered For My Use
Purchased to pump water from rain barrels pump not strong enough to pump from 300 gallon barrel---disappointed
Was this review helpful?
11
Donnie
Appomattox, VA
REVIEWED
MAY.
19
2011
5 out of 55 out of 55 out of 55 out of 55 out of 5
Inside The Box
For those wondering whats in the box, this pump includes:
-Strainer
-Hose connectors (Not garden hoses)
-Hose Clamps
-Pump
-Instructions

(Hoses not included)
Was this review helpful?
70
Thomas B.
Del Rio, TX
Purchased from Water Pumps Direct
Purchased 9/19/14
REVIEWED
OCT.
14
2014
5 out of 55 out of 55 out of 55 out of 55 out of 5
Manufacturer Backs Their Merchandise
I purchased the Earthquake 4310 water pump from Power Equipment Direct. Unfortunately the unit I received failed after a short run period. Although Power Equipment Direct has a no return policy on gas powered equipment, the manufacturer did.

I called Ardisam, spoke to a representative, and explained my dilemma to them. They, without any hesitation stood behind their product and sent me another water pump at no charge to me.

If you are looking for a light weight, high volume, very... more
Thomas Recommends This Earthquake Product
Was this review helpful?
71
Emile I.
Niceville, FL
Purchased from Water Pumps Direct
Purchased 6/23/13
REVIEWED
JUL.
14
2013
5 out of 55 out of 55 out of 55 out of 55 out of 5
A Great Little Pump With A Tempermental Engine
As the saying goes, the quality of life is inversely proportional to the number of gas engines one owns. However, this little pump is a winner. I use it to pump salt water from the Gulf to my beach house bait tank -- about 400 feet with a head of 20+ feet. I uses a foot valve on the end of the intake line (PVC Pipe) to hold the prime because the pump will not self-prime. The only issue I have is that I have to use about 1/2 to 2/3 choke to keep the engine running with the 20ft head as the... more
Pros: Easy To Use, Price, Light Weight, Easy To Store
Cons: The Motor Is A Bit Tempermental
Emile Recommends This Earthquake Product
Was this review helpful?
82
Irving
South Lyon, MI
Purchased from Water Pumps Direct
Purchased 6/28/12
REVIEWED
JUL.
21
2012
5 out of 55 out of 55 out of 55 out of 55 out of 5
Water Pump
The pump works great, once we got a check valve. I don't know why one is not included. Spent to much time trying to get it to work properly. Once the check valve was on, it works great.
Was this review helpful?
71
Mark
Austin, TX
Purchased from Water Pumps Direct
Purchased 7/20/11
REVIEWED
AUG.
20
2011
2 out of 52 out of 52 out of 52 out of 52 out of 5
Not Recommended For Real World Use
Works OK moving water up a slight incline. I need mine to transfer water from a pond to a livestock water trough. Starts out OK but when I move the discharge hose slightly to fill another trough, the pressure increase causes the engine to surge. Sometimes it dies and then it won't always restart.

Also the priming is a hassle. If you start with the pump near the input water level, you can fill the prime tank once and it will start moving water within 30 seconds. If you start with the... more
Was this review helpful?
60
Mark G.
Ivins, UT
Purchased from Water Pumps Direct
Purchased 9/24/13
REVIEWED
NOV.
06
2013
4 out of 54 out of 54 out of 54 out of 54 out of 5
Cheap Unit Works Good While It Works
Difficult to start but once started works well. Unfortunately after one use the recoil starter failed. Spend money on a better unit. or be prepared for the frustration that sometimes comes with getting what you pay for...
Pros: Light Weight, Price, Easy To Store, Features
Cons: Difficult To Use, Durability
Was this review helpful?
72
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