Gas cylinder maintenance machines are professional pieces of equipment that cover every stage of the gas cylinder reconditioning process. The periodic inspection (hydrostatic test) and refurbishment required by law are essential for maintaining the cylinder’s full service life. PWENT offers a complete range of machinery for maintenance workshops — 87 products across 10 sub-categories — in accordance with all EU standards (PED 2014/68/EU, TPED 2010/35/EU, EN ISO 9809).

The steps in the maintenance process
The gas cylinder reconditioning process follows the same steps for every cylinder. First, the valve is unscrewed using a special valve-removal machine — safe management of the residual pressure is critical at this stage. This is followed by internal and external cleaning (using wire brushes and sandblasting). A hydrostatic test is carried out at pressures of 30–500 bar to check the structural integrity of the cylinder — if the test fails, the rejection machine scraps the cylinder (even for 34CrMo4 steel). This is followed by drying, painting and re-labelling. Finally, the valve is refitted with the correct torque (100–500 Nm).

Product categories
Valve fitting: EL60, EL60-E, EL60-ATEX, EL100-C electric valve-fitting machines, AIR4-AIR5B pneumatic sockets, Bahco and Norbar torque wrenches. Pressure testing: FIT 6-EVO and FIT 6-DUO EVO automatic water pressure test benches, FIT50, FIT350, HT350. Pressure test pumps: N7/15 electric, N7/4 pneumatic, N7/1FH-E mobile. Cleaning: GH1, GH2 shot blasting machines, RCP 270 wire brush cleaner. Marking: SPSN1492 automatic labeller. Drying: DRY series. Scales: BE series, DYNA dynamometer.

Why PWENT?
Machinery compliant with EU standards from Italian and European manufacturing partners, including documentation in Hungarian, commissioning, training and after-sales service. With over 25 years of industry experience, PWENT can help you put together the right machinery package, tailored to the size of your workshop and your production capacity. Request a quote.