Innovation
Introduced December 10, 2008, the SP22 is a self-priming, magnetic drive centrifugal pump that safely and efficiently transfers a wide variety of hazardous chemicals including aggressive acids and bases.
The self-priming, suction lift capability allows it to be used in applications that are difficult or impossible for traditional centrifugal pumps. It is capable of lifting fluids from as deep as 25 ft (7.6 m) below the pump.
Primary uses include large chemical sumps, rail and tanker truck unloading/loading, pulling liquid out of the top of bulk storage tanks (eliminating leak-prone side wall bulkhead fittings), replacement for energy inefficient air operated double diaphragm pumps (AODDs) and replacement for expensive in-solution vertical pumps.
The SP22 has a unique, molded-in gooseneck that eliminates the need for a check valve to retain sufficient liquid for re-priming. It is the only pump on the market that uses large, single piece molded housing, eliminating the large gasket found on other models to seal a two piece housing (preventing leaks and simplifying maintenance).
Chemical duty, self-priming pumps are commonly used on applications where contaminants and debris are found, increasing the likelihood of internal check valve failure. The SP22's unique gooseneck design eliminates the need for a check valve and always retains sufficient liquid for re-priming. This eliminates one of the most common reasons for pump failure. The lack of an internal check valve makes it superior to other all-polymer, self-priming centrifugal pumps. The SP22 also has a significantly lower first cost than polymer-lined or alloy self-priming centrifugal pumps.
The deep suction lift capability of the SP22 aids in emptying double containment systems by unloading from the top. This eliminates the need for submersible pumps and vertical in-tank pumps that may not be available for taller tanks. The SP22 keeps the pump and motor from being subjected to corrosive environments.
The SP22 uses about one-fifth of the electrical energy required to operate an AODD pump at similar hydraulic duty points. Comparing a 2 in x 2 in AODD pump operating at 160 gpm at 0 ft of head to an SP22 with a 5 1/8 in diameter impeller, the AODD pump uses 23.5 hp of electricity versus 4.4 hp for the SP22.
End User Testimony
Jim Rissman, maintenance and blow mold supervisor at KIK Corporation's Santa Fe Springs facility "uses the SP22 to unload extremely corrosive sodium hypochlorite from the top opening of tanker trucks." The SP22 "results in no process downtime due to pump or system failure. I have good confidence in the pump."
The one-piece molded priming chamber brings "a lower cost than lined-metal or polymer self-priming sealless pumps."
Pumps & Systems, December 2009 Tags: Centrifugal Pumps , December 2009 Issue , Product Innovation of the Year , Pumps
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