Case Study - PT Rotary Joint with Shield
PT rotary joint with integral protective shield keeps debris out of the sealing area and enhances safety around the rotary joint.
Read moreFluid Handling
Steam, Paper Drying, and the Bottom Line
Because energy drives the papermaking process, steam is found in many energy streams in a paper mill. Steam is used to cook fibers for improved sheet strength, heat stock for improved drainage, heat process air for ventilation, heat dryers to dry paper, and selectively heat the web for improved gloss and smoothness.
Read moreWritten by Wes Martz on October 13, 2015.
Vacuum Breaker Best Practice: Keeping Contamination Out
Vacuum breakers are frequently installed with the air inlet port facing up. This orientation can lead to contaminants entering the steam system and potentially accumulating on the ball, seat, and cage area of the vacuum breaker.
Read moreWritten by Al Ives on March 17, 2015.
Pressure Powered Pump Alternative Reduces Maintenance
There are thousands of electric centrifugal pumps in service used to pump condensate. These pumps are either simplex or duplex condensate pump units and operated with a mechanical float switch assembly.
Read moreWritten by Mike Sneary on October 28, 2014.
Paper Dryer Fabric Tension Impacts Dryer Performance
Dryer fabrics, often called dryer “felts”, are used to hold paper against the outer surfaces of steam-heated drying cylinders. The pressure from the dryer fabrics increases the rate of heat transfer from the dryer to the paper. The pressure that is applied to the paper depends on the fabric tension and the diameter of the dryer. The pressure can be calculated, as a first approximation, by the equation:
Read moreWritten by Greg Wedel on September 16, 2014.
Steam Hammer in Continuous Casting of Steel
Continuous casting of steel is the process where molten steel is solidified into a semi-finished billet, bloom, or slab for subsequent rolling in the finishing mills. Effective water cooling of continuous casting rolls is critical. Any drop in water pressure, even from a leaking hose, can result in reduced water flow causing water to remain in the rolls longer than recommended.
Read moreWritten by Frank Marsden on November 10, 2015.
Does your vacuum breaker experience sporadic periods of chattering and spit out condensate?
A newly installed steam injection water heater with a ½” vacuum breaker was experiencing sporadic periods where the vacuum breaker chattered rapidly and “spit out” condensate. Once the water heater reached its set point, the chattering stopped and did not reappear for hours. Chatter will eventually destroy the cage that holds the spring and ball-check in place on the vacuum breaker.
Read moreWritten by Jan Walter on April 16, 2015.
What is the lowest operating temperature for a vacuum breaker?
A vacuum breaker is an anti-siphoning check valve used in a variety of applications to prevent a vacuum from developing. When the vacuum breaker valve is sealed, its spring seats a ball against an O-ring.
Read moreWritten by Jan Walter on January 06, 2015.
Corrugating Experts Head to Long Beach for Corrugated Week
Organized by TAPPI and AICC, Corrugated Week attracts decision makers from the industry for a weeklong, jam-packed event with industry trend, innovation, and new product and service discussions.
Read moreWritten by Danielle Rohrer on October 01, 2014.
Kadant Johnson Hosts TAPPI’s CORBOTEC Annual Summer Meeting
Kadant Johnson Inc. recently hosted TAPPI’s CORBOTEC (Corrugated Board Technical Service Committee) annual summer meeting at its W.R. Monroe Research and Development Center in Three Rivers, Michigan.
Read moreWritten by Danielle Rohrer on September 02, 2014.
