Woodward Large Electric Sonic Valve II, Инструкция по установке и эксплуатации, Страница: 32 / 66

Manual 35076 LESV II
Woodward 30
Do not operate the valve without proper support for the diverging
sleeve. The diverging sleeve can only be properly supported by
bolting and by properly torqueing the outlet flange to either piping or
an equivalent flange. Do not place hands inside valve body during
inspection, cleaning, or operation.
Figure 3-6. Support Flange Bolted to Outlet Flange
Piping Installation
Refer to ANSI B16.5 for details of flange, gasket, and bolt types and dimensions.
The LESV II is designed for support by the piping flanges alone; additional supports are neither needed
nor recommended.
The LESV II is a 90° angle valve. Verify that the process piping face-to-face dimensions meet the
requirements of the outline drawings (Figures 1-2 through 1-5) within standard piping tolerances. The
valve should mount between the piping interfaces such that the flange bolts can be installed with only
manual pressure applied to align the flanges. Mechanical devices such as hydraulic or mechanical jacks,
pulleys, chain-falls, or similar equipment should never be used to force the piping system to align with the
valve flanges.
If pressure testing is being performed on the LESV II, the actuator
must be connected to the DVP, powered up, and under position
control.
If the unit is unpowered during a pressure test, the actuator return
spring force alone may be insufficient to prevent the valve from
moving open, and potential damage to the LELA2 actuator could
result.
Released