Lawrence has designed its Vertical Chlorine pump for safe, efficient transfers with high reliability and long service life. In addition to liquid chlorine, these pumps can handle anhydrous hydrogen cyanide, phosgene, and other dangerous liquefied gases which must be contained to satisfy environmental laws and safety regulations.
| | Flows to 800 GPM (180 m3/hr) | | | | Temperatures from -60° F to 125° F (-15° C to 52° C) | | Design Features
All models are vertical, top entry units to eliminate hazardous side or bottom connections. Liquid chlorine is pumped in both boiling and suppressed conditions. To prevent chlorine gas leakage to the atmosphere, a buffer gas - dry air or nitrogen - is used in conjunction with redundant sealing elements. As a back-up to the primary sealing system, an emergency seal may be pressurized to prevent chlorine leakage.
A complete instrumentation package is available to control flow of buffer gas to the seal chamber, and monitor critical operating parameters.
Lawrence also offers an excess flow check valve feature which operates indepednatly to stop the flow of liquid chlorine should a downstream line rupture occur while the pump is running.
The diffuser casing design completely balances the radial thrust around the entire 360° circumference of the impeller. Regardless of the number of stages used, or the head developed by the pump, the radial load carried by the sleeve bearings is minimal. Enclosed carbon steel impellers are equipped with sealing surfaces on both the front and back shrouds. For "wet" chlorine applications monel is available, as is stainless steel for toxic services other than CL2.
To minimize tank inventory, a suction inducer is available on all sizes to reduce NPSHR
 | | Product Applications | | Chemical Bulk Storage and Transfer | |  | | 
