Cashco 1465 - Manual

II. INSTALLATION
INSTALLATION, OPERATION & MAINTENANCE MANUAL (IOM) IOM-1465
12-13
Recommended Piping Schematic
for Pressure Reducing Station
MODEL 1465
PRESSURE REDUCING REGU LA TOR
SECTION I
I. DESCRIPTION AND SCOPE
The Model 1465 is a high pressure reducing reg u la tor designed primarily for analytical sampling and low fl ow ap-
plications. Size is 1/4" (DN8). With proper trim utilization, the unit is suitable for liquid and gaseous ser vice. Refer to
Technical Bulletin 1465-TB for design conditions and se lec tion rec om men da tions. NOT FOR DEAD END SER VICE.
SECTION II
Do not dead end (no fl ow demand) down stream of
the regulator. The inlet pres sure will transmit past
the metal seat (not positive shut-off) and equal ize
on the down stream. This will lead to di a phragm
failure, regulator mal func tion, and pos si ble dam age
to sys tem in stru men ta tion down stream.
CAUTION A
1. An inlet block valve should always be in stalled.
2. If service application is continuous such that
shut down is not readily accomplished, it is rec-
om mended that an inlet block valve, outlet block
valve, and a manual bypass valve be in stalled.
3. Pipe unions should be installed to allow re mov al
from piping.
4. An outlet pressure gauge should be located ap-
prox i mate ly ten pipe diameters down stream, and
within sight.
5. All installations should include a downstream re-
lief device if the inlet pressure could exceed the
pressure rating of any down stream equip ment or
the max i mum outlet pressure rating of the unit.
6. Clean the piping of all foreign material in clud ing
chips, welding scale, oil, grease and dirt before
installing the regulator. Strainers are rec om-
mended.
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 reg u la tor
upon startup.
8. Flow Direction: Install in accordance with the
fl ow di rec tion arrow cast on the body. The inlet
pres sure is con nect ed to the bottom connection
and the outlet (reduced) pressure is connected
to the side connection. When in stall ing, hold by
the body (1) hex to keep the regulator fi rm.
Outlet
@ P2
Bypass
Model 1465
Reducing
Regulator
SRV
Sup ply
@ P1
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 ex tend ed pipe nip ples.
CAUTION B
CAUTION C
Installation of adequate overpressure pro tec tion
is rec om mend ed to pro tect the reg u la tor and all
down stream equip ment from dam age in the event
of reg u la tor failure.