AUSTRALIAN PIPELINE VALVE 99 Australian Pipeline Valve don’t consider in our design the following factors of risk: 1. Australian Pipeline Valve ‘Standard’ valves can be used in a temperature range between -29 to +490°C.   (Note, pressure limitations apply above 38°C refer to Pressure/Temperature charts.) For service temperatures   below -29°C valves construction materials shall be submitted to an impact test at the minimum service  temperature. For temperatures above and below the standard range, special seals need to be specified by the client. 2. The onus is on the customer to specify all materials of construction and service conditions. Australian Pipeline Valve shall assume standard materials and conditions if not otherwise specified. 3. Australian Pipeline Valve ‘Standard’ valves are not equipped with devices suitable to avoid internal over-pressures caused by incorrect operations of process or by-fluids & liquids subjected to an increase of volume and/or pressure (these devices, such as the over-pressure hole in the gate or safety seats are  available upon request). 4. Australian Pipeline Valve ‘Standard’ valves are not designed with special devices to withstand a sudden thermal  jump (thermal shock). 5. In general Australian Pipeline Valve ‘Standard’ valves are not mechanically designed to bear overloads due to exceptional atmospheric or natural phenomenon’s (such as earthquakes). 6. In general Australian Pipeline Valve ‘Standard’ valves are not designed to bear loads on flanges, on pipe   connections or pipe-line. 7. In general Australian Pipeline Valve ‘Standard’ valves can’t withstand ice inside their bodies (in this case the   user has to consider the optional stem extension for insulating, avoiding the presence of residual product inside the   valve). 8. Australian Pipeline Valve ‘Standard’ valves are not suitable for low temperature service below -29°C (-20°F)   unless supplied (in a suitable body material) with cryogenic stem extension and other modifications,   (available on request). 9. Australian Pipeline Valve ‘Standard’ valves are suitable for ‘industrial’ oxygen (not medical) service when  supplied degreased and packed in polyethylene bags only. 10. The compatibility between the valves construction materials and medium is selected by the user. The user is ultimately responsible for verifying the compatibility between medium and materials. 11. Abrasive or dirty service applications need to be considered and stated at time of order. VALVE START-UP Before installing the valve onto the pipe-line it is mandatory, for the user, to verify the compatibility of the valve with  service conditions (medium, temperature and pressure). With reference to standard valves held in stock, the reseller   and end user will have to assure themselves of the compatibility between the valve and the conditions required by the customer. Australian Pipeline Valve gate valves must be only used for on-off (fully open/fully closed) service. Before using the valve in a potential explosive atmosphere it’s necessary for the customer to: - • To verify the correct type of valve and operator is specified. • To verify the compatibility between the valve and the zone in which the valve should be installed • To foresee the pipe-line ground condition on which the valve should be installed • To check that the temperature if the valve surface is not higher than the flammable point of the atmosphere in which the valve is installed (in this case specify an insulating cover device for the valve and an extension for the operator) • To avoid mechanical knocks during the installation that may cause sparks. Australian Pipeline Valve cannot be held responsible for damage caused by use of the product for any reason, especially if it is improper use or modified. TECHNICAL CONSIDERATIONS OF TECHNICAL RISK / LIMIT OF LIABILITY FOR APV GATE, GLOBE, CHECK VALVES