Assembly Notes and Instructions
states he built this hand pump in 20 minutes for about US $20. It can be used
in water wells that have no existing feed lines, wiring or submersible pumps
in place, or in water wells with them in place by the addition of a 1-1/2"
interior diameter PVC pipe as a pump guide sleeve. The 1-1/2" interior diameter
PVC guide sleeve should have a cap glued on the bottom end and 1/2" holes drilled
through the bottom pipe section above the end cap. The holes allow water to
flow freely into the 1-1/2" interior diameter sleeve when it is submerged into
water. The sleeve separates the hand pump from feed lines, wiring or submersible
pumps so they do not rub during pumping. It also keeps the water clearer by
keeping the hand pump off the bottom of the well. The guide sleeve can be bolted
to the above ground well casing area with 1/2" carriage bolts and nuts. Be
sure to seal the bolt holes with rubber washers or caulking. The guide sleeve
and pump should extend down below the water table. As the foot valve of the
pump is pushed down below the water table, the water flows up through the foot
valve and into the pump shaft above it. The valve is open on the down stroke
and closed on the up stroke. Repeated pumping motion shoves the water up the
pipe and out the hose by a hydraulic ram effect. The water flows out the hose
on the down stroke only.
length is based on well depth and the water table height in it. The pump should
be long enough to stay submerged in at least 3' - 5' of water so the pump remains
in the water during the pumping motion cycle. Remember that water tables may
change with seasonal conditions. If you know of wells that you may need to
use in the future, you should get proper water samples from them and have them
tested. Stagnant or unused wells should be cleaned out with a power pump and
disinfected. Local health departments and well drillers maintain well records
and can give you information on well depths, testing and on keeping wells sanitary.
You can also measure a well and water table with a sanitized cord and plumb
bob. When using untested well water, you should use water treatments (boiling,
bleach, iodine, filters, etc.) to protect you from typhoid, dysentery, diarrhea,
cholera, giardia and other diseases.
must disinfect your hands before using the well. Keep all the pump parts off
the ground and disinfect them before placing them in the well. Sick persons
must not have any contact with the well area, pump or water containers. Keep
the area around the well sanitary and never drink from the hose or allow any
waste water or animals near the well area.
the pump in the well and keeping the well cap on when not in use will help
keep the well sanitary. If no sleeve is used in your well, you can hang the
pump inside the casing by a cord with a prussik knot (Scout handbook) around
the pump shaft. Install a hook below the well cap area on the inside of the
casing and hang the pump from it. If you use a pump sleeve, you should make
the sleeve about 2" shorter than the well casing top. Make the pump long enough
to stand above the sleeve but still be short enough for the well cap to be
replaced over the well casing. You can also wire a hook to the top of the pump
shaft and hang it over the sleeve edge.
pump can be made from copper and brass. It will cost more, be heavier and freeze
easier in cold climates, but will allow the pump to be used on fuels from storage
tanks. Some makes and models of brass foot valves are:
Series 810, model FV75
Ace model RFV75
model SFV75 (plastic)
plunger action check valve can be used but you should put a 1/8" screen over
the intake end and secure it with a ring clamp to help keep any well debris
out of the valve. Foot and check valves have a closure spring which may need
to be trimmed down or removed to get the best flow rate from pressures generated
by hand pumping.
weep hole is about 1/8" diameter. It should be drilled through one side of
the pump shaft above the foot valve but a good distance below the frost line
in your area. This allows the water in the pump shaft to slowly drain back
down into the well when the pumping stops. This helps keep the well from freezing
in cold weather.
pump works great at depths of 0 to 20 feet; good at 20 to 35 feet; OK at 50
feet. It remains workable down to 75 feet for one person, but beyond that,
it is too heavy for only one person to operate due to the increased water and
pipe weight. It will work deeper and is limited only by the person's downward
thrust with more energy than it takes to suspend the existing water column
in the pipe.
pump model displayed in only one of an endless number of pump variations you
can build. Parts are becoming harder to find in quantity due to low inventory
stocking practices at stores. Other pipe types, sizes, adapters and fittings
can be readily made into pumps that will work with varying degrees of efficiency
levels. A functional pump only needs a foot valve, a weep hole (cold climates),
a stiff hollow pipe shaft above the valve for the water to flow up in, and
a hose or side pipe discharge to get the water away from the pump shaft and
into a container.
best way to survive a power outage or any emergency is to prepare before it
occurs. You need shelter, heat for cooking and warmth, water, food medicines,
medical supplies, hygiene items and other things. These will not be easy to
get in a power outage or emergency. Build a pump now while you can still get
the parts. After a power outage will be too late.