Liquid Controls V-15, V-30, VS-3, and VS-4 Valves - Manual (Page 13)

13
VS-3 & VS-4 Valves - Installation
Retrofit Installations
Depending on the existing configuration, adding a VS-3
or VS-4 Valve may require modification of the outlet
piping.
After the internal pressure is relieved from the system,
drain all the fluid from the flowmeter and accessories.
The outlet line can then be disconnected from the
flowmeter.
Installing the Valve
The VS-3 or VS-4 valve is installed on the outlet side of
the flowmeter. The valve may be installed in one of four
orientations. Determine the orientation desired and then
attach the flowmeter using the four bolts and washers
provided. Tighten the bolts in a crossing pattern.
Installing the Linkage Assembly
The handle and linkage assembly is provided with the
VS-3 and VS-4 Valves. The handle and linkage may
need to be repositioned depending on the valve
orientation.
The valve handle mounts on either side of the valve shaft.
Mount the valve handle to the valve shaft and tighten the
handle screw. With the handle securely mounted to the
valve shaft, the linkage assembly can be connected to
the preset ring under the mechanical register.
The linkage assembly connects to the preset ring via the
ball joint extension (Figure 17a). The ball joint extension
is mounted using the screw and nut provided.
Mount the ball joint extension to the preset ring by
threading the screw into one of the holes at the back of
the register assembly. Thread the nut in place on the
screw.
With the ball joint extension secure on the preset ring,
attach the linkage assembly (Figure 17b). The linkage
assembly may require adjustment in order to mount to
the ball joint extension. If this is the case, either loosen
the handle and reposition on the valve shaft, or loosen
the nuts at the handle pivot (Figure 17c).
Once the handle and linkage assembly is secure,
proceed with setting the dwell and zero shut-off as
described on Pages 9-10.
! ! ! ! ! WARNING
Relieve Internal Pressure
All internal pressure must be relieved to zero pressure before
disassembly or inspection of the meter or any of the meter accessories.
Serious injury or death from fire or explosion could result from
maintenance of an improperly depressurized and evacuated system.
Figure 17a: Ball Joint
Figure 17b: Linkage Attached to Ball Joint
Figure 17c: Handle Pivot