The Model 464 Electronic Pump Control Unit provides options for automatic and manual operation of pneumatic pumps. It is available in 125 psi and 250 psi versions. Automatic operation includes sampling pre-sets for low, medium, and high flow rates. The Control Unit is also capable of saving up to 99 custom flow rates, created by the user to suit specific applications.
The Model 464 can also be operated manually, without batteries. A Manual Control Valve is pushed to create a drive cycle, then release to allow the system to vent. The Control Unit comes with all fittings and tubing required for connection to the pump and to an air compressor or gas cylinder.
The 12V Low Flow Compressor is lightweight (9.5 kg (21 lbs)) and easy to transport. It is oil-less and uses a 12 V DC power source to operate, such as a car battery. Alligator clips are used to simply connect to a power source. The Compressor uses a 2 US gallon (7.6 L) tank, rated to 175 psi. It operates at up to 150 psi, as such, it is useful for low flow sampling applications to depths of 30 m (100 ft.).
Locking Well Caps are a convenient option for dedicating pumps for long-term projects. The Model 407/408 Dedicated 2" Well Cap Assembly has built-in quick-connect fittings to attach 1/4" or 3/8" drive and sample lines. There is an additional access hole for monitoring equipment such as a Water Level Meter or datalogger. The suspension hook on the underside of the cap provides pump support. A Reducer Assembly is available to fit the cap to a 4" well.
Tubing Reels make transporting Bladder Pumps and Double Valve Pumps very convenient. This is ideal for less frequent sampling, and allowing access to multiple monitoring wells and hard to reach or remote locations. The tubing fittings on the front of the free-standing reel make connection to the drive and sample lines easy.