Piranha
Gasoline Engine Dredge  Model PS135E
13.5 Horsepower
For Removing Sand & Mud From:  Boat Docks, Canals, Ponds, &
Waterfront Property
The PS135E dredge was developed in response to thousands of requests received from waterfront
property owners.  Decades of runoff and vegetation decay has robbed the storage capacity of lakes,
ponds, and canals throughout the United States.  The PS135E dredge is a compact, highly portable,
gasoline engine powered sediment removal pumping system, designed to provide the homeowner
and contractors with the ability to excavate and transfer unwanted sediment. It is an efficient
alternative to machinery such as: back hoes, excavators, and drag lines. These methods of
mechanical excavation are expensive, have limited reach, are destructive to the shore, and typically
deposit the material adjacent to the shore only to wash back in with the first good rain.

Our PS135E dredge is particularly effective in removing sand, silt, and that fluffy black stinky mud
that has ruined your ability to enjoy your waterfront. It is not possible for a dredge in this price range
to excavate thousands of cubic yards of  material in a short period of time. The excavation capability
of this unit is in the neighborhood of 10-25 cubic yards per hour depending upon: the nature of your
sediment, distance pumped, and your energy & skill levels. To give you a point of reference, a pile of
sand the size of a Ford F250 pickup truck would be about 20 cubic yards. That generally represents
the size of a hole that you can make in an hour. If you are cleaning a modest area for example;
around a dock or boat slip, you can expect to get the job done relatively quickly. On the other hand,
if you have a large surface area to cover, say 1 to 2 acres, you are going to be whittling away at it for
awhile.  Using our pickup truck example again, if you dredge for 4 hours every other weekend for 6
months, you would be able to park a fleet of 50 trucks in the hole that you created. The intent here is
to provide you with the means to diminish your sediment problem  with a quality, yet affordable piece
of equipment. You are also going to have to be prepared to deal with the fact that you will be
pumping a lot of water along with the sediment. The mud is not going to come out of your discharge
hose looking like toothpaste. Even expensive industrial dredges can’t do that.  On the other hand,
this unit will provide you with the means to renew  the quality of your waterfront, and the quantity of
removed sediment will be limited only by the amount of time & energy that you put in to it.

What is the difference between the PS135E dredge pump and cheaper engine driven self priming
trash pumps? First of all, a self priming pump alone is not very effective in removing sediment. The
agitator water jet system is necessary to deliver kinetic energy (energy of motion) to the sediment to
take it from a solid state rendering it a fluid slurry.

Cheap trash pumps are not designed to withstand abrasion or shock. Cheap trash pumps usually
utilize small diameter carbon/ceramic shaft seals. Carbon/ceramic is the cheapest seal material there
is and is a strong indication that your pump is designed to pump water only. The shaft seal is the
component that seals the engine shaft as it enters the pump case. A leaky shaft seal will disable your
pump completely, by allowing air to enter the pump case instead of water being drawn up the suction
hose. The PS135E dredge pump is equipped with an oversized silicon carbide shaft seal. Silicon
carbide is a premium seal material that is utilized in most industrial grade pumps. We also make the
seal much larger in diameter than those found in most “trash pumps”. Small diameter seals fit snug
on the drive shaft. When a hard piece of debris (rock, wood, etc) hits the pump impeller, it deflects
the shaft momentarily and fractures the seal. Our seals have a large inside diameter with a lot of
space between the seal and the shaft preventing seal damage from shock. Also, in order for
mechanical seals to work, they all utilize a stainless steel compression spring to hold the seal faces
together. Lazy pump manufacturers, leave that spring exposed in the water way behind the impeller,
rendering it vulnerable to abrasive wear and to collecting stringy material & debris. Our seal spring is
tucked away in a recess machined in the pump housing, sealed away from abrasives and debris.

The second most vulnerable component to abrasive wear is the impeller. You will find that most trash
pumps have a cast iron impeller. Cast iron is popular inexpensive material, and serves adequately for
non-abrasive pump applications. The next level above cast iron is ductile iron. Then comes heat
treated stainless steel. The top abrasion resistant impeller material is high chrome iron. High chrome
iron impellers are usually only found in severe duty industrial slurry pumps because they are so hard
they are expensive to machine. The PS135E has a high chrome iron impeller.

We manufacture the PS135E with innovative design features from the highest quality components &
materials, too many to list here. We could make a cheaper dredge, but it wouldn’t work as well or last
as long. We’ve been manufacturing industrial grade pumps for over 40 years. We are very critical
about quality, and we make our pumps as if we are building them for ourselves.

What is the difference between the PS135E dredge and a gold mining dredge? That’s like asking
about the difference between apples and oranges. A gold mining dredge has a totally different
design and purpose. A gold mining dredge utilizes a device called an “eductor” in conjunction with an
inexpensive water pump. This system is designed to pump a lot of water with low slurry content a
relatively short distance, usually into a nearby sluice, and is normally deployed by a scuba diver. The
PS135E does the opposite. It moves large quantities of slurry a great distance (up to 900 feet).