text: Works great till it doesnt
  
  I'm a sculptor and need to keep my materials damp. This has worked really well for me, but little by little it's begun to behave erratically. Now It wont work at all. When i pump it, there is no pressure, just pump and pump and nothing. As if there is some leak somewhere and air is getting out. But I've had it for several years. Maybe that's to be expected...?