New Kids on the Block

TIPS FROM THE SERVICE BENCH

Phillips and Allen have dominated machine, sheet metal and cap screws for a long time. They are popular, easy to use and easily recognizable. But Phillips and Allen are looking over their shoulders! There are a couple of New Kids on the Block!

The new kids’ names are Torx and Pozidriv. The names may sound foreign but they fit right in the machine screw neighborhood. More surface area and better geometry make these screws more resistant to cam-out — or stripping — as it is more widely known. KNF is still utilizing Phillips and Allen head screws but Torx and Pozidriv are definitely making their presence felt.

TORX

Figure #1 (click to enlarge)

Torx are called “star drive” by some, as the recess resembles a 6 pointed star. The six points of contact engagement allows for higher torque being applied than a conventional Allen hex drive of the same size. Torx sizes are denoted by a T, followed by a number from 1 to 100. Common sizes used for KNF products include T6, T10, T15, and T25.

Various Torx screws and drivers are depicted in Figure #1 (left); shown clockwise (from top-left): various Torx screw heads, Torx handles, Torx driver, Torx black & white image.

POZIDRIV

Figure #2 (click to enlarge)

Pozidriv screws are almost a cousin to Phillips. The Pozidriv (sometimes spelled incorrectly as “Pozidrive”) is actually an improved version of the Phillips screw drive. The name is short for Positive Drive. This screw recess is very easy confused with Phillips if not noticed. Using a Phillips driver for Pozidriv screw recesses can easily result is a stripped head due to the different geometry of the driver itself. The Pozidriv has additional ribs in the driver tip which are received by the secondary web of the Pozidriv screw itself. This extra feature provides more turning strength due to the higher tool engagement. Figure #2 show various Pozidriv screws and drivers; shown clockwise (from top-left): Pozidriv screw heads, Pozidriv handles, Pozidriv driver, black & white image of Pozidriv.

Pozidriv drive bits are designated by the letters “PZ” plus a size code of 0, 1, 2, 3, 4 or 5. Common at KNF are the 0, 1, and 2 sizes. The drivers themselves will have a PZ marking and size code, and possibly the Pozidriv image on the handle butt.

The Pozidriv screws are visually distinguishable from Phillips by a set of radial indents set at 45° from the main cross recess on the head of the screw. These markings are sometime hard to see on plated or treated screws as the treatment may fill in the slighter 45 degree markings.

Please take care to look at these screws carefully before removing for service. Using the right driver will make your servicing quick and efficient. If you are in doubt of which screw is used on your KNF pump, please contact us. We are here for you.

WELCOME TO THE NEIGHBORHOOD

They don’t make things the way the used to, and this can be a good thing, since the latest tools usually incorporate technological advances that improve performance. Please give the “New Kids on the Block” a chance, they are proving to be hard workers!

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Safe, Gas-tight Transfer of Dangerous and/or Expensive Media

The following is a case study presenting the issues encountered and overcome when problem-solving a pyrophoric gas transfer application with KNF customer, Air Products and Chemicals.

INTRODUCTION

Spontaneously-Combustible-SignAir Products is a leading international manufacturer of industrial gases and chemicals. With a staff of over 21,000, the company, based in Pennsylvania, operates in 50 countries across the globe and supplies a wide variety of processing media for myriad applications and industries.

Among goods produced specifically for the semiconductor and solar industry, Air Products manufactures a special gas mixture employed in etching and gas deposition processes to coat silicon wafers and glass substrates; these methods help, for example, to create the active films in flat panel displays and solar cells.

Owing to their pyrophoric properties, the utmost care is required both when manufacturing and using these gases. All system components that store or transfer the gases must therefore prevent air contamination. Should such gases come into contact with air, an exothermic reaction takes place in which a telltale oxidation product is created and deposited in the form of a white coating.

>> Read the Complete Case Study

Obtaining Optimal Process Pump Performance

KNF process pumps for hazardous media and environments

KNF N 860.3 FTI Ex – for pyrophoric gas application

In the latest edition of Processing magazine, KNF Process Pump Engineer, Rich Aerts highlights the importance of adapting a diaphragm pump to its operating conditions, media properties, and the needs of the process itself. The article includes a real-life example of pump materials being modified to achieve optimal performance, and illustrates the importance of gas-tightness in the manufacturing of pyrophoric processing gases.

Read article: “Transferring Pyrophoric Processing Media with Safety” (Processing, Sep. 2015) >>

Closer Look: KNF USA Process and Industrial Pumps

Our “About KNF USA” series comes to a close with its fourth and final chapter, a video snapshot of the Process and Specialty Products division. Richard Aerts, Process Products Engineer, walks you through options for reliable transfer, sampling, evacuation and recirculation of liquid and gas in critical—and often hazardous—industrial applications.

To explore further, download our Process Pump Catalog, or see our Process product line.

You can view the entire KNF Neuberger video library here.

KNF Attends Gas & Oil Expo in Canada

Gas&Oil ShowThe KNF Neuberger Process Group recently attended the Gas & Oil Expo 2013 in Calgary, Canada, joining 70 U.S. companies in the largest single-country trade delegation the
expo has hosted. KNF provides the process market with proven technology and durable
performance from pumps and systems that feature explosion-proof motors,
corrosion resistance and custom designs for in-process use, pilot plants and skid
systems.

KNF was featured in an article by the U.S. Consulate General in Calgary, which details the benefits KNF provides industrial applications. To read more, visit: http://calgary.usconsulate.gov/news-events/consulate-news-and-events/2013/knf-neuberger.html