LTC liquid diaphragm pumps and miniature laboratory liquid vacuum pumps achieve optimal performance in a very compact envelope by incorporating several innovative features
Hargraves Technology advances the miniature liquid diaphragm pump technology that is required for aggressive laboratory devices and systems with the introduction of the LTC series.
The LTC liquid diaphragm pumps and miniature laboratory liquid vacuum pumps achieve optimal performance in a very compact envelope by incorporating several innovative features to eliminate leaking and enhance dry self-priming, says the company.
A liquid pump's internal fluidic resistance is a driving factor in its performance capabilities.
A liquid media has higher fluidic resistance when compared to gas or air due to it being incompressible and its much higher viscosities.
The innovative and patent pending Fluid-Blok advanced sealing technology to eliminate leaks.
Coupled with the monolithic diaphragm designs allow for maximum suction and priming even under dry operation.
An advanced flow path and efficient valve system maximise flow with very low power consumption.
These liquid pumps are developing an excellent track record in several challenging medical, scientific instrument, clinical chemistry applications, and wide format ink jet printing applications, says Hargraves.
In addition, the rugged design has been specified in harsh cleaning, dispensing, and waste-removal functions.
The Hargraves advanced diaphragm elastomer and innovative bearing and motor design is providing substantial cost savings in reduced field service time.
The long life liquid pump capabilities currently include designs up to one litre/min flow, pressure ratings up to 30psig, and suction ratings to 20inHg.
Hargraves liquid pumps are chemically resistant capable of flowing media ranging from mild aqueous solutions to chemically aggressive solutions.
Hargraves wetted material options include: Teflon, Viton, EPDM, perflouroelastomer; and an advanced strong, chemically inert polymer (LCP).
To achieve unsurpassed operational life for demanding laboratory, clinical chemistry and analyitical instrumentation system applications, Hargraves redesigned and enhanced brushless motor designs.
Because of the heavy mechanical loads experienced by the motor of a diaphragm pump, the motor bearings were found to prematurely wear.
Proprietary bearing cage design, assembly methods, and materials were employed to reduce radial loading and promote long bearing life.
The motor was further enhanced to withstand operating temperatures of 70C.
Hargraves set the standard of long life operation by having the LTC miniature liquid diaphragm pump and miniature liquid vacuum diphragm pump exceed 10,000 hours.
Fluidic and pneumatic system developers are being challenged to develop advanced fluidic systems in smaller and more compact package sizes.
These development engineers require liquid miniature diaphragm pumps, micro liquid vacuum pumps or miniature liquid pressure pumps that are optimised for pressure, vacuum, flow, noise reduction and efficiency in smaller envelope constraints without sacrificing long life.
Hargraves Technology has developed an OEM programme to optimise and configure a miniature diaphragm liquid pump, miniature liquid vacuum pump or micro air compressor to the fluid transport system's specific application using standard components.
The design permits configuration flexibility to achieve optimal performance.
