Product Knowledge
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Application
Industry Trivia
Competitor
100

This type of valve varies flow in a controlled, continuous manner rather than simple on/off switching.

What is proportional valve?

100

This design feature minimizes the amount of liquid retained inside a component between cycles.

What is low internal volume?

100

This medical device can use 2-way solenoid valves to purge nitrogen from the sieve beds, a 3-way solenoid valve to switch between sieve beds, a proportional valve to control oxygen flow to the user, and a pump to compress incoming air.

What is an oxygen concentrator?

100

This pump type moves fluid by squeezing flexible tubing.

What is a peristaltic pump?

100

This Japan-headquartered industrial automation company is widely known for pneumatic components such as solenoid valves, actuators, connectors, and sensors.

What is SMC?

200

 This PPF pump integrates an unloading valve (X valve), enabling high-pressure restarts.

What is the PPF Helix pump?

200

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? 


200

In air-over-liquid systems, tight control of this parameter is critical for consistent flow rates through microchannels.
 

What is pressure regulation?

200

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?

200

This manufacturer is known for very small cartridge valves with similar technology and a comparable profile to Parker’s PPF C7 valve

What is The Lee Company?
300

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? 

300

This type of control uses feedback from a flow/ pressure sensor to automatically correct output flow/pressure

What is closed-loop control?

300

This analytical technique measures the physical and chemical properties of cells as they flow in a fluid stream.

What is flow cytometry?

300

This ISO standard is for the biocompatibility evaluation of breathing gas pathways in medical devices.

What is ISO 18562

300

This Burkhert valve has a similar technology and profile to PPF R9 valve.

What is whisper valve?

400

With a sliver plated gasket, this PPF valve is leak-tight to 1 × 10⁻⁸ atm·cc/s (helium). 

What is series 99? 

(Miniature High Speed and Pressure Liquid Dispense Valve)

400

This proportional valve characteristic describes minimal difference between the increasing vs decreasing command for the same flow.

What is hysteresis?

400

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 gas detection.

What is outgassing?

400

US POCT (CAGR) is projected to almost double from 2024 – 2030. Out of the 8 POCT categories, this category dominates ~40% market driven by molecular NAAT and epidemic preparedness

What is Infectious Disease 

400

This Norgren EPC has two proportional valves (inlet and exhaust) 

What is CHIPREG?

500

Most gain specifications for PPF proportional valves apply only over 10%–90% of the flow range. This valve is rated over a 2%–90% flow range.  

What is LM-Pro?

500

This solenoid valve feature holds its last state with little to no continuous power - useful for battery instruments.

What is latching operation?

500

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?

500

This biocompatibility standard is the foundation for evaluating the biological safety of medical devices that come into direct or indirect contact with the human body, including implants, surgical instrument, and diagnostic devices.

ISO10993

500

These two components allow for advanced closed loop control integral to KNF's intelligent pumps.

What is integrated sensor and control module?