Product Knowledge
This type of valve varies flow in a controlled, continuous manner rather than simple on/off switching.
What is proportional valve?
This design choice reduces how much gas or liquid is trapped inside a component between cycles.
This pump type often is selected for precise, pulseless, low-flowing dosing in microfluidic applications.
What is a syringe pump?
This pump type moves fluid by squeezing flexible tubing.
What is a peristaltic pump?
This type of pump is often chosen when you need higher pressure capabilities.
What is swing-piston pump (or Helix pump)?
This pressure rating is higher than the rated pressure and indicates the valve can withstand it without permanent deformation—i.e., a non-destructive failure pressure.
What is Proof Pressure?
In chemically compatible gas analyzer flow paths, preventing this issue—where trapped or dissolved gases release from liquids and materials into the measurement stream—is key for stable readings, particularly in agent detection.
What is outgassing?
This valve type sports a tall slender body and is characterized by a combination of low internal volume and isolating diaphragm to limit the materials in contact with the application media.
What is a rocker valve?
This PPF valve commonly used to auto-zero flow and pressure sensors by temporarily isolating sensors to establish a baseline reference.
What is X Valve?
This type of control uses feedback from a flow/ pressure sensor to automatically correct output flow/pressure
What is closed-loop control?
This analytical technique measures the physical and chemical properties of cells as they flow in a fluid stream.
What is flow cytometry?
This specification describes leakage from the valve seat when a normally closed valve is "off".
What is internal leakage (or leak rate)?
When pumping liquids, this effect can reduce performance if dissolved gases come out of solution at low pressure.
What is degassing?
This proportional valve characteristic describes minimal difference between the increasing vs decreasing command for the same flow.
What is low hysteresis?
In liquid chromatography and mass spectrometry flow paths, this design goal minimizes dead volume to preserve peak shape and helps reduce carryover between injections.
What is minimizing internal volume (or dead volume reduction)?
These two components allow for advanced closed loop control integral to KNF's intelligent pumps.
What is integrated sensor and control module?
This compatibility check helps prevent swelling, embrittlement, or leakage in seals and wetted parts.
What is chemical compatibility?
This solenoid valve feature holds its last state with little to no continuous power - useful for battery instruments.
What is latching operation?
This process in flow cytometry uses fluid forces to align cells into a narrow core stream so they pass one at a time through the detector.
What is hydrodynamic focusing?