Cashco B2 - Manual

IOM-B2
11/13
MODEL B2
BACK PRESSURE REGULATOR
The Model B2 is a back pressure regulator used to control upstream (inlet or P
1
) pressure. Sizes are 1/4" and
3/8" NPT (DN8 and DN10) FNPT or 1/2" (DN15) with Tri-Clamp connections. The unit is suitable for gaseous or
liquid service. Refer to Technical Bulletin B2-TB for design conditions and selection rec om men da tions.
SECTION II
II. INSTALLATION
1. An inlet block valve should always be installed.
2. If service application is continuous such that
shut down is not readily accomplished, it is rec-
ommended that an inlet block valve, outlet block
valve, and a manual bypass valve be installed.
3. Pipe unions should be installed to allow removal
from piping.
4. An outlet pressure gauge should be located ap-
proxi mately ten pipe diameters downstream, and
within sight.
5. All installations should include a downstream re-
lief de vice if the inlet pressure could exceed the
pres sure rating of any downstream equip ment or
the maximum outlet pressure rating of the unit.
6. Clean the pip ing of all foreign material including
chips, welding scale, oil, grease and dirt before
installing the reg u la tor. Strainers are rec om -
mend ed.
7. In plac ing thread seal ant on pipe ends pri or to
en gage ment, ensure that excess material is re-
moved and not allowed to enter the regulator
upon startup.
8. Flow Direction: Install so the fl ow direction
match es the inlet stamp on the main regulator
body (1).
9. For best performance, install in well drained
hori zon tal pipe.
10. Basic Regulator - (Refer to Figure 2, Model B2):
Regulator may be rotated around the pipe axis
360°. Recommended position is with knob (4)
ver ti cal upwards.
11. Regulators are not to be buried un der ground.
12. For insulated piping systems, recommendation
is to not insulate regulator.
INSTALLATION, OPERATION & MAINTENANCE MANUAL (IOM)
SECTION l
I. DESCRIPTION AND SCOPE
CAUTION
This is not a safety device and must not be substituted for a code approved pressure safety relief valve or a
rupture disc.
CAUTION
Installation of adequate overpressure pro tec tion is
recommended to pro tect the reg u la tor from over-
pres sure and all down stream equip ment from dam-
age in the event of regulator failure.