Liquid Controls Mechanical Eliminators - Manual (Page 16)

16
PIPInG ConfIGUraTIons & ConneCTIons
Piping configurations for Liquid Controls mechanical air
and vapor eliminators are determined by two factors,
the presence or absence of a valve in the meter system
and the presence or absence of bypass ports and a
limited bleed valve plate in the mechanical air eliminator
assembly.
If the meter system has an air check or differential valve,
the air or vapor eliminator and the valve must be piped
together. If no air check or differential valve exists, you
must either plug one of the vent ports (Figure 2) or pipe
both vent ports to the storage tank (Figure 3).
Air eliminator models cast without bypass ports cannot
be assembled with a limited bleed valve plate at the
Liquid Controls factory. To retain the pressure control a
limited bleed valve plate provides, a limited bleed tee
assembly must be installed in the piping between the air
eliminator and the valve (Figure 4).
Under normal circumstances, it is irrelevant which vent
port is piped to the valve and which vent port is piped
to the storage tank, but there is one exception: air
eliminators with an increased venting capacity valve
plate. These include part numbers A8201, A8198,
A8190, A8188, and A8183. When installing these air
eliminators, the increased venting valve plate should be
piped to the storage tank, and the limited bleed valve
plate should be piped to the valve. The limited bleed
valve plate is easily indentified by the notch in the top of
the plate (see below).
Limited Bleed Valve Plate
To Air Check/Differential Valve
To Supply/Storage Tank
PIPInG WITh valve
PIPInG WITh no valve
To Supply/Storage
Tank
To Air Check/Differential Valve
To Supply/Storage
Tank
PIPInG WITh valve
To Supply/Storage Tank
PIPInG WITh no valve
The piping configuration for each air and vapor
eliminator series is shown in the bill of materials.
Figure 1
Figure 2
Figure 3
Figure 4
Standard Valve Plate
When using an electronic valve, product may become
trapped between the vapor eliminator and the valve.
fIeld PIPInG