PUMP RUBBER DIAPHRAGM
4130000 - 1 x Standard diaphragm to suit Bertolini PA330 pump.
4183000 - Standard black rubber diaphragm. There are 3 diaphragms per pump and they are sold individually. 1 x Standard Diaphragm to suit Bertolini PA530 Pump.
4221100 - Kit contains 2 diaphragms.