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Bennett Sample Pumps
have automatic reciprocating piston motors, operated by compressed air, that generates
power for operating a double acting, piston fluid pump.
High Lifts
Models for lifts up to 170meters (500ft) have one motor piston; Models for lifts up to
330meters (1000ft) have two motor pistons, providing increased power for operating the
pump. All models have a differential ratio between the motor pistons and the pump to
accomplish lifts using low pressure air from small compressors. Bennett Pumps may be
operated in any position from horizontal to vertical. These pumps will operate submerged
to great depths or above water with a drop tube attached to the fluid inlet.
Portable or Dedicated
Options
Dedicated Option
A dedicated well system consists of a Bennett Sample Pump, a tube bundle (made to required
length), a well casing cap and tube bundle retaining plug. Tube bundles are shipped on
wooden spools with all fittings included for easy installation.
Portable Option
Bennett Sample pumps may be used as portable units, capable of sampling
multiple boreholes, or used in dedicated well systems. They are constructed to permit easy
dis-assembly in the field for cleaning and replacement of pump seals and valves, using
ordinary tools. Repair kits containing all parts for re-conditioning the pump are
available. Pump body and piston rod are made of stainless steel.
Portable Reel System
A pump unit for applications where portability is required. Each consists of a Bennett
Pump, a tube bundle (choice of length and materials) and a tube bundle reel. The reel is
equipped with all controls for operating the pump. The portable units are completely
assembled, tested and shipped ready for use.
- Tube Bundle Construction - stainless steel cable core
polypropylene air supply and air exhaust tubes, choice of materials for water discharge
tube, electric chord for water level indicator, nylon wire ties to hold bundle together
(PVC tape wrap optional).
- Water Level Indicator System - A sonar alarm sounds when the
probe installed in pump head touches water. System is powered by a 6 volt battery inside
console.
- Rotary Swivel - Installed on reel axle, eliminates
disconnecting lines when setting pump.
- Flow meter - Monitors pump discharge rate .75 to 7.5 litres
per minute.
- Air Pressure Regulator & Gauge - Adjustable for
controlling pump discharge.
- Hand Brake - Controls lowering speed into borehole.
- Reel Drive - Sprocket and chain drive with reduction ratio
for hand crank operation. Power drive system available for larger reels.
- Reel Lock - Holds pump in fixed position in borehole.
- Roller Head - Guides tube bundle into borehole.
- Tube Bundle Measuring System - A mechanical counter attached
to the measuring wheel reads in feet and tenths.
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