The Type 21, a general purpose seal, has become an industry standard with OEM designers. Made of stainless steel, it provides a service range well beyond that which is possible with comparably priced seals of other metallurgical construction. The positive static seal between the bellows and the shaf...

SOME IMPORTANT questions about the advantages of progressive capacity pumps and what types of mechanical seals are used in wastewater applications are dealt within this article. Q: What are the advantages of a progressive cavity pump? A: A single screw pump is a type of rotary pump known as a progre...

IRRIGATION CONTROL valves should always be placed up stream of the pressure regulator and filters. There are times, however, when this is not possible. If such is the case, the pressure loss through the valve must be calculated and the “real pressure” to the first emitter determined. In addition, ea...

BEFORE SHUTTING down your irrigation system for the winter, experts suggest conducting a quick inspection – performing routine maintenance and making a plan for any necessary repairs. “A thorough inspection can help identify potential problems that could result in costly delays or breakdowns next ye...

BEFORE SHUTTING down your irrigation system for the winter, experts suggest conducting a quick inspection – performing routine maintenance and making a plan for any necessary repairs. “A thorough inspection can help identify potential problems that could result in costly delays or breakdowns next ye...

Pipeline rupture IN MANY processes, valves are used as a way to control flow—but they also must seal leakage from the stuffing box and operate freely to keep the plant running properly. Packing success and valve operability need accurate gland loading to perform correctly. Packing friction is a bypr...