Remediation Pumps

The SRX R pump uses an internal float that responds to the recharge rate of the well. As the pump fills with liquid, the float rises to the upper position opening the air valve. The air valve incorporates a magnetic assist to insure a positive opening of the valve reducing stalling concerns. As the air valve is opened, the air pressurizes the vessel, closing the bottom inlet check valve and pushing the liquid through the center discharge tube to the surface. As the vessel is emptied, the float will fall to the lower position deactivating the air valve while opening the air exhaust valve allowing the pump to fill. This cycle automatically repeats as based on the recharge of the well.

Simple Disassembly
With one wrench, the complete SRX R pump including the float can be totally disassembled for cleaning. Simply unthread the bottom bolt to remove the inlet screen and the two internal bolts on the arch assembly. Remove the two arch pins and arch assembly and the float can be removed. PRM offers a stainless steel brush cleaning kit to further simplify the cleaning process. Iron fouling can be a concern with ground water pumping and the simple disassembly of the SRX R pump simplifies maintenance of the pump.

Advanced Air Valve Assembly
The air valve is a critical design element in the proper operation of pneumatic pumps. The SRX R pump offers the simplest, positive-sealing valve assembly and does not require time consuming adjustments. The magnetic assist snaps open the air valve reducing stalling concerns. The precision check ball and stainless steel seat assemble can be easily accessed by removing the hose connection at the top of the pump should cleaning be required.

Material of Construction
The SRX R is constructed of stainless steel, brass, nylon and Viton check balls to provide compatibility and durability in aggressive groundwater applications.

Loading Configurations
The top-loading (SRX-R TL) pumps are used for pumping total fluids (LNAPL and ground water simultaneously). Water table draw-down will be maintained at a level corresponding to the top inlet of the pump. The top loading pump fills through the top inlet check valve and will have a slightly lower flow rate than the bottom filling pumps.

Bottom-loading pumps (SRX-R BL) are selected for dissolved phase or DNAPL applications. When installing the pump, the head is positioned at a depth of approximately 10 inches higher than the desired water table depression. Shorter lengths pumps are available for lower drawdown requirements.

Accessories Tubing
PRM provides tubing assemblies for both the 2” and 4” SRX R pumps. The air and dischare tubing is Buna-N and the air supply is nylon. OD Sizes for the 4” SRX R – ¼” air, 5/8″ Exhaust and 1 -1/16″ fluid discharge. OD sizes for the 2” SRX R – ¼” air, 3/8″ exhaust and 13/16″ fluid discharge.

Filter Regulators
Are used to supply proper air pressure to the SRX pump and optimize air consumption. They should be installed at the well head for best control. The assembly includes a 5-micron filter, various fittings and mounting brackets to meet most requirements.

Cycle Counters
Are used to determine the total flow of the SRX pump. The compact and robust counter is installed in the air supply line at the well head. As the pump cycles, the counter senses the drop in air pressure that indicates the pump has cycled. The number of cycles is multiplied by the internal volume of the specific pump you are using to calculate the flow rate. The counter body can be disassembled for cleaning.

Well Seals
PRM well seals provide an easy method for connecting fluid and air lines to simplify installations. Strain relief seals isolate the individual tubing sizes used on the SRX pumps and are vacuum rated. The well seals are attached to the casing, sealing them to the diameter of the well casing with a Fernco™-type flexible coupling. Additional threaded openings through the seals are provided for fluid level monitoring. An eyehook is included for attaching pump support cable.