cashco 8310HP Installation, Operation & Maintenance Manual
Pressure reducing regulators
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Also See for 8310HP:
- Installation, operation & maintenance manual (10 pages) ,
- Installation, operation & maintenance manual (8 pages)
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MODELS 8310HP AND 8310LP
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
) pressure. Sizes are 1-1/2" (DN40), 2" (DN50), 2-1/2" (DN65), 3" (DN80) and 4" (DN100). With proper trim utilization, the
2
unit is suitable for liquid, gas eous, or steam service. Refer to Tech ni cal Bulletin 8310-TB for design conditions and selection
recommendations.
II. INSTALLATION
CAUTION
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.
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.
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.
INSTALLATION, OPERATION & MAINTENANCE MANUAL
PRESSURE REDUCING REG U LA TORS
CAUTION
SECTION l
SECTION II
Supply
@ P 1
Model 8310HP or 8310 LP
Pressure Reducing Regulator
Blowdown-Drain
(Shaded portion for steam/condensate systems)
Recommended Piping Schematic For
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 flow 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.
IOM-8310HP/LP-BASIC
TR
TR
Blowdown-Drain
Pressure Reducing Station
03-17
Outlet
@ P 2
SRV
P
1
By pass
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Related Manuals for cashco 8310HP
Summary of Contents for cashco 8310HP
- Page 1 By pass to welding into pipeline. The heat of fusion welding will Model 8310HP or 8310 LP dam age non-metallic parts if not re moved. Pressure Reducing Regulator NOTE: This does not apply to units equipped with extended pipe nip ples.
-
Page 2: Principle Of Operation
(When on bypass, the system pres sure must be con stant ly observed and manually reg u lat ed.) outlet (down stream) valve only if regulator re mov al is Close the outlet (downstream) block valve. re quired. IOM-8310HP/LP-BASIC... -
Page 3: Maintenance
ANSI Class Model Torque Material Size II seat leakage and assembled to pro vide op ti mum 8310HP 45 ft-lbs (61 Nm) 5/8" Ø “free vertical movement”. 8310LP 45 ft-lbs (61 Nm) 1/2"... - Page 4 Secure flats on upper plug (12.1) in a soft jawed during final as sem bly. vise. b. Rotate lower retainer (12.7) CCW to remove. c. Inspect and replace lower seat (12.6). Apply Loctite 242 (or equivalent) to threads of lower retainer (12.7) and install lower retainer onto IOM-8310HP/LP-BASIC...
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Page 5: Troubleshooting Guide
Ensure no dust or debris entering vent opening. If rainwater or debris can enter, re-orient spring chamber. 5. Sluggish operation. Possible Causes Remedies A. Plugged spring chamber vent. Clean vent opening. B Fluid too viscous. Heat fluid. Contact factory. IOM-8310HP/LP-BASIC... -
Page 6: Section Viii
Cashco, Inc. does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of any Cashco, Inc. product remains solely with the purchaser. - Page 7 Needle Valve Spring Diaphragm Case Nut Flush Bushing Pipe Plug Pipe Nipple Rotational Stop Figure 1: Standard Model 8310HP/LP Stem Not Shown: (NOTE: Variation “LP” has a larger diaphragm area than the “HP”.) Pipe Nipple Elbow Drive Screw Flow Arrow * Comp.
- Page 8 Figure 2: Model 8310HP only – Option -20, Dome Loaded Figure 4: Model 8310HP/LP, Option-1 Closing Cap Figure 3: Model 8310HP only – Option -80, High Pressure Spring Cham ber Construction IOM-8310HP/LP-BASIC...
- Page 9 ATEX requires that all components and equipment be evaluated. Cashco pressure regulators are considered components. Based on the ATEX Directive, Cashco considers the location where the pressure regulators are installed to be classified Equipment-group II, Category 3 because flammable gases would only be present for a short period of time in the event of a leak.
- Page 10 If the above issues are addressed by selecting options that do not have potential sources of ignition, avoiding options that have not been assessed, and by taking the proper usage issue precautions, then Cashco regulators can be considered to be a mechanical device that does not have its own source of ignition and thus falls outside the scope of the ATEX directive.
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