Model 1: Full set

The large diaphragm7.1CMThe left and right，The inner hole8.5MMThe left and right，small diaphragm2CMThe left and right，The membrane2.5CMThe left and right

Compatible market deng yuan pump As well1600 2600Diaphragm Pump。 

 Pay special attention to：The present accessories suitabledeng yuan pump As well1600 2600Diaphragm Pump Basically applicable to other brands of such water purification pumps（May appear slightly larger But you can use Black small diaphragm almost universal ）