7
For NPT Fittings:
Seal all pipe threads with an
appropriate non-lubricated thread
sealant (such as Loctite
®
No
More Leaks™ Plastic Pipe Thread
Sealant or NSF equivalent for NSF
applications). Make sure the thread
sealant does not intrude into the
flow path. Hand tighten the meter
at the housing ends. Do not use
a wrench or similar tool to tighten
as this can damage the housing.
NOTE:
If connecting to new
female pipe threads, burrs
and curls can adversely affect
accuracy. Correct the problem
prior to meter installation.
For BSPP Fittings:
The BSPP meter includes a plastic
bag containing (2) O-rings and (2)
backup rings that must be installed
onto the meter. They are used
for sealing the fitting ends of the
meter to process piping. Before
installing the meter, install an
O-ring in the O-ring gland on each
housing end, then fit a backup ring
over each O-ring
(see Figure 6)
.
The BSPP meter is now ready for
installation. Hand tighten the meter
at the housing ends.
DO NOT
use
a wrench or similar tool to tighten
as this can damage the housing.
1. Install O-ring
2. Install backup
ring
Installed
Flush to center O-ring
with housing
cut-away view
Figure 6
For ANSI and DIN Flange Fittings:
The flanges supplied with your
meter allow the meter to be
oriented regardless of the mating
flanges position. The meter
flanges and their steel half-ring
“keys” must be installed onto the
meter by the customer before
meter installation
(see Figure 7)
.
LOBE
RECESS
(TOP & BOTTOM)
FLANGE INSTALLATION
(POLYMER FLANGE SHOWN)
CUT-AWAY
Figure 7
• Installing flanges on meter: With
the mating face of the flange
facing outboard, slide flange over
one end of the meter. Position (2)
half-rings in the retaining groove
