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Manufacturer: Pulsafeeder Engineered Products
EASTERN Centrichem pumps utilize mechanical seals exclusively on all models. Mechanical seals are the preferred sealing method in most applications, and offer many advantages over conventional packed stuffing boxes:
Reduced friction and power loss
Zero leakage of product
Elimination of shaft wear
A wide variety of seal configurations provide the best selection of elastomers and mating faces in order to handle a wide range of corrosive liquids.
Type 21 and Type 9 seals cover the widest range of services. These seals are dimensionally interchangeable. They operate in the same manner, using spring tension to keep their stationary and rotating faces in contact.
Primary sealing is accomplished by interaction of the lapped stationary and rotating faces. Secondary sealing occurs at the shaft by means of a tight fitting bellows in the Type 21 design, or a PTFE wedge in the Type 9 arrangement. The final sealing point occurs at the static seat by means of either an elastomeric O ring or a PTFE ring.
EASTERN Centrichem pumps are available in 316 stainless steel and Alloy C. These materials are suitable for a wide variety of acid and alkali solutions.
EASTERN Centrichem Series ECJ3 typical application is for continuous duty, high pressure pumps are used where positive displacement pumps are normally required, but where liquids containing small particles or solids preclude the use of close tolerance units. For transfer, OEM equipment, pilot plant operations, or laboratory use where high purity or corrosive service is needed.
End suction with an open impeller closed coupled to mount any standard 56C motor. Consult factory for metric motor adapters.
Type 21 mechanical rotary seals with carbon, Viton, and ceramic are standard on the single or double configurations. Type 9 single seals with chemical grade carbon, PTFE, and silicon carbide are optional.