- With built-in flowmeter. - Can be applied for various types of O2 cylinder, with high quality and low repair rate. - The flow output accuracy meets medical standard. - With GMP, ISO13485 & CE certificates. - Material: Internal brass parts, and aluminum surface. - Output Pressure: 50 psi fixed - Flow Rate: 0-4 lpm/ 0~8 lpm/ 0~15 lpm/ 0~25 lpm - Various types of inlet connection can be selected.