Single diaphragm pump.
1. Maximum working air pressure: 75psi(5.5~6kg/cm2). 2. Working air pressure range: 40~60psi(2~4kg/cm2). 3. Compression ratio of air to liquid: 1:1. 4. Maximum liquid flow: 5gpm(19lpm) water tested (3min). 5. Air inlet port: 1/4"pt. 6. Liquid inlet/outlet port: 3/8"pt / 1/4"pt. 7. Pump body material: aluminum alloy. 8. Pump dimensions: ?0x160mm. 9. Net weight: 35kg. 10.Overall size: 465x592x1300mm.