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WRK FGD Pump Conversion

The first FGD Pumps installed in the 1970’s and 1980’s experienced widespread rubber liner failure.

Rubber has been a poor liner choice for contemporary FGD absorber pumps. While their newer designs have great out-put, but they have experienced several failures:

  • Difficult to install and retain these large rubber shell liners
  • One small tear can grow to liner failure and unacceptable leakage from shell
  • Chunks of rubber will clog the downstream spray nozzles reducing absorber efficiency
  • Cleaning nozzle is a major maintenance event

WRK-FGD-partsFor a time, bonded-in urethane liners replaced the rubber liners, but the industry discovered that alloy white iron impellers and pump casings are the best-suited materials for this application.

Unfortunately over the past 10 years, the coal-fired power industry has been supplied a large number of rubber-lined absorber recycle pumps such as the Warman® GSL 600, 700, 800 & 1000. A high rate of premature impeller and suction liner wear as well as damage to volute liners is well documented. As a result, we have designed our WRK™ FGD Pump Conversion.

Our WRK™ FGD Pump Conversion Design Upgrades

  • Robust impeller and suction liner design to extend wear life
  • Impeller and suction liner made of Townley alloy HC34, proven in absorber recycle pumps for more than 20 years
  • Able to be relined, Bonded Towniprene® seal and suction cover inlet
  • Adjustable suction liner eliminates the need to move impeller and risk damage to mechanical seal
  • Direct bolt-up conversion requires no piping changes
  • Peak pump efficiency maintained
  • Unique serial number embossed on each casting for full traceability
  • First installation of WRK™ 800 now in service 50 months as of June 2014, showing minimal signs of wear – O.E.M. lasted only 20 months before failure
  • Extensive contact list of current satisfied users
  • Easy installation and adjustment
  • Solid bowl pump casings for 800 & 1000. First WRK™ 800 installed October 2013
  • All rubber wear parts eliminated, no chance of breakdown of rubber causing blockage of spray nozzles
  • Short lead times, typically 8 weeks or less