Single-phase pneumatic diaphragm pumps is professionally applied for ... "or G1 1/4"Biggest suction: six metersSingle-phase pneumatic diaphragm pumps is professionally applied for printing machinery. ... of light weight, elegant appearance, not rust, corrosion resistance, etc.7.The product is suitable to ink, ethanol ... hex screws, lesting the spring jumped out. Single-Phase Pneumatic Diaphragm Pump