... , manufacturing and testing is in accordance with WELDED STEEL GAS CYLINDER DB5100, CYLINDERS SAFETY MONITORING PROCEDURES.(EN13322-1:2003) ... connected with outer hose before opening the switch to release gas. Turn off the switch after work finished.5. The ... QF-13D10.Life Span: 10 years11.Refilling Gas: REFRIGERANT GAS R134A, R22, R404A, R410A, R407A, R407C, R408A, R409A, R413A, R507, R427A, R428A, ...