Flowserve ZK 313 ASME - Manual (Page 17)

17
ZK 313 ASME
Installation
The control valve ZK 313 ASME is supplied equipped with or without an actuator and ready for
installation. If an actuator is mounted on site the technical documentation of the manufacturer of the
actuator must be taken into consideration before commissioning the equipment and archived together
with the installation manual “ZK 313 ASME”.
Valve with socket-weld ends
1. Use suitable and approved lifting equipment in order to put the control valve in the mounting position.
2. Before mounting the control valve provide a static support at the place of installation to counter-
balance the weight of the actuator.
3. Take direction of flow into consideration. The arrow indicating the flow direction is on the valve body
D / E.
4. Consider space required for opening or servicing the valve. When the valve is installed a minimum
space of 120 mm is required for removing or mounting the actuator.
5. Remove plastic plugs. They are only used as transit protection.
6. Clean socket-weld ends.
7. Apply approved standard welding process to mount the valve.
Attention
■ Only qualified welders certified e. g. according to DIN EN 287 or ASMW QW-300 WPQ
(Welding Performance Qualification) may weld the control valve into pressurized lines.
1. Use suitable and approved lifting equipment in order to put the control valve in the mounting position.
2. Before mounting the control valve provide a static support at the place of installation to counter-
balance the weight of the actuator.
3. Take direction of flow into consideration. The arrow indicating the flow direction is on the valve body
D / E.
4. Consider space required for opening or servicing the valve. When the valve is installed a minimum
space of 120 mm is required for removing or mounting the actuator.
5. Remove plastic plugs. They are only used as transit protection.
6. Clean butt-weld ends.
7. Apply approved standard welding process to mount the valve.
Valve with butt-weld ends
Heat treatment of welds
After welding the control valve in place the welds require a heat treatment (annealing process for stress
relief to DIN EN 10529 or QW-406 PWHT (Postweld Heat Treatment)).
Materials type F22 and F91 require heat treatment, material type F1 does not require a post weld heat
treatment. The heat treatment is restricted to the region of the weld.