APPLICATION STORIES
     
 
APPLICATION:  DIAPHRAGM LIFE 3
 
  A major international chemical company in New Jersey uses 3” air operated double diaphragm (AODD) pumps with PTFE diaphragms to pump a highly aggressive chemical through candle filters from an overhead tank. Part of the filtered chemical is recirculated at 30 psi back to the pump’s inlet.  
     
  PROBLEM:  
  Rapid diaphragm failure was occurring in the AODD pumps. These pumps are generally limited to a maximum inlet pressure of 10 psi when equipped with PTFE diaphragms. As a result of the excessive inlet pressure, the PTFE diaphragms in these pumps lasted only a few hours.  
     
  SOLUTION:  
  A BLACOH distributor was asked to find a solution to the rapid diaphragm failure problem. After consultation with BLACOH, a decision was made to install a 5 gallon BLACOH SENTRY inlet stabilizer at the inlet to each AODD pump. The inlet stabilizer acts as a shock absorber to cushion the water hammer pressure spikes created as the pump’s inlet valves rapidly open and close. The SENTRY uses compressed air, separated by a PTFE diaphragm from the process fluid, to balance pump inlet pressure and provide a smooth and continuous flow of liquid to the pump.  
     
  RESULT:  
  After SENTRY inlet stabilizers were installed, pump diaphragm life was extended from hours to more than 6 months. The SENTRY inlet stabilizer paid for itself in the first two weeks of operation.  
     
     
     
Uncommon Solutions To Common Pump System Problems
  Industry Served:
Chemical Process Icon
CHEMICAL PROCESS
 
   
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Pump Inlet Stabilizers
LENGTH: (04:46)
   
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