Cashco 8310LP - Manual

MODELS 8310HP AND 8310LP
PRESSURE REDUCING REG U LA TORS
SECTION l
l. DESCRIPTION AND SCOPE
The Model 8310 is a high capacity pressure reducing regulator with double seat design used to control down stream (outlet or
P
2
) pressure. Sizes are 1-1/2" (DN40), 2" (DN50), 2-1/2" (DN65), 3" (DN80) and 4" (DN100). With proper trim utilization, the
unit is suitable for liquid, gas eous, or steam service. Refer to Tech ni cal Bulletin 8310-TB for design conditions and selection
recommendations.
SECTION II
II. INSTALLATION
IOM-8310HP/LP-BASIC
12-13
6. Clean the piping of all foreign material including chips,
welding scale, oil, grease and dirt before in stall ing the
regulator. Strainers are rec om mend ed.
7. In placing thread sealant on pipe ends prior to en-
gage ment, ensure that excess material is re moved
and not allowed to enter the regulator upon start-up.
8. Flow Direction: Install so the fl ow direction match es
the arrow cast on the body. Install an external sensing
line (1/2" O.D. (DN15) tubing minimum) from the 3/8"
(DN10) NPT con nec tion in needle valve (39) to a point
down stream, pref er a bly at gauge location. If regula-
tor pipe line is ex pand ing to a larger pipe line, always
connect sensing line to the larger pipe line.
9. For best performance, install in well drained hor i zon tal
pipe, properly trapped, if a steam service ap pli ca tion.
Recommended Piping Schematic For
Pressure Reducing Station
CAUTION B
Installation of adequate overpressure pro tec tion
is recommended to pro tect the reg u la tor and all
downstream equip ment from dam age in the event
of reg u la tor failure.
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 om mend ed that
an inlet block valve, outlet block valve, and a manual
bypass valve be installed.
3. Pipe unions are recommended for NPT screwed in stal -
la tions to allow removal from piping.
4. An outlet pressure gauge should be located ap prox i-
mate ly ten pipe diameters downstream, and within
sight.
5. All installations should include a downstream re lief
device if the inlet pressure could exceed the pres sure
rating of any downstream equipment or the max i mum
outlet pressure rating of the unit.
For welded installations, all internal trim parts, seals and
diaphragm(s) must be removed from reg u la tor body prior
to welding into pipeline. The heat of fusion welding will
dam age non-metallic parts if not re moved.
NOTE: This does not apply to units equipped with
extended pipe nip ples.
CAUTION A
INSTALLATION, OPERATION & MAINTENANCE MANUAL
Supply
@ P1
Outlet
@ P2
P
1
SRV
By pass
Model 8310HP or 8310 LP
Pressure Reducing Regulator
TR TR
Blowdown-Drain Blowdown-Drain
(Shaded portion for steam/condensate systems)