Linde gas cylinders are designed and manufactured in line with international standards and specifications. These guidelines define the material from which the cylinders are made, the method of manufacturing, the test pressure, maximum permissible filling pressure and the regular testing method.
Maintaining and testing cylinders
If you own your cylinders, you must be aware of and comply with statutory obligations regarding maintenance and regular testing. If you rent your cylinders from Linde then Linde – as the owner of those cylinders – ensures that these regulations are met.
Cylinder valves and security caps
All Linde cylinders that contain gas at high pressure are fitted with a cylinder valve. This must not be removed or tampered with at any time except to tighten the gland nut when necessary. All filled cylinder filled with gas should be kept with a valve cap at all times when not in use! Some cylinders have a shrink-foil, a plastic cap or a tape over the cylinder valve indicating that they have been filled and checked. Each valve outlet is specially threaded to fit standard pressure regulators available at Linde sales points.
Regardless of whether gas cylinders contain flammable or non-flammable gases, all cylinder valves are opened by turning the spindle anti-clockwise and closed by turning the spindle clockwise.
IMPORTANT
NEVER open an acetylene cylinder valve completely. A half turn is sufficient.
NEVER leave the opened spindle of any cylinder valve against the backstop.
NEVER tamper with cylinders in any way. If in doubt ask your gas supplier.
NEVER attempt to repair a cylinder.
NEVER hide damage to cylinders.
NEVER mix gases in a cylinder.
NEVER transfer gas to another cylinder.
NEVER scrap a cylinder you do not own.
NEVER use adaptors to connect regulators or hoses that are not approved for that gas.
NEVER expose cylinders to elevated temperatures (> 55°C)
Pressure relief devices
Certain cylinders are fitted with pressure relief devices. These can be either relief valves (which re-seal when pressure falls to normal) or bursting discs (which discharge content completely). This disc is fitted on the cylinder valve.