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INSTALLATION, OPERATION & MAINTENANCE MANUAL (IOM)

IOM-HP

12-13

MODEL HP

PRESSURE RE DUC ING REGULATOR

SECTION I

I. DESCRIPTION AND SCOPE

The Model HP is a heavy duty, high pressure reducing regulator used to control downstream (outlet or P

) pres sure.

Sizes are 1/2", 3/4", 1" and 1-1/2" (DN15, 20, 25 and 40). With proper trim utilization, the unit is suit able for liquid and

gaseous service. Refer to Technical Bulletin HP-TB for design conditions and selection rec om men da tions. NOT FOR

STEAM SERVICE.

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 prox-

i 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

regulator. 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 arrow cast on the main regulator body.

9. Basic Regulator - (Refer to Figure 1): Regulator may

be rotated around the pipe axis 360°. Rec om mend ed

position is with spring chamber ver ti cal upwards. Orient

such that the spring chamber vent hole does not collect

rainwater or debris.

10. Regulators are not to be direct buried un der ground.

11. For insulated piping systems, recommendation is to not

insulate regulator.

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.

CAUTION

Installation of adequate overpressure pro tec tion is

recommended to pro tect the reg u la tor from overpres-

sure and all down stream equip ment from damage

in the event of regulator failure.

1 2 3 4 5 6 7 8

Résumé du contenu

Page 1 - MODEL HP

INSTALLATION, OPERATION & MAINTENANCE MANUAL (IOM) IOM-HP 12-13MODEL HPPRESSURE RE DUC ING REGULATORSECTION II. DESCRIPTION AND SC

Page 2 - SECTION IV

IOM-HP2SECTION III* NOTE: Systems sequencing operations at startup, normal operation, failure mode(s), and shutdown must as-sure that the pressure (

Page 3 - SECTION VI

IOM-HP3SECTION VIVI. MAINTENANCE2. Relax range spring (14) by turning adjusting screw (6) CCW until removed from spring cham ber (2).3. Draw or emb

Page 4

IOM-HP4E. Special Instructions for Diaphragm Re place ment:1. For the Option -1+6 Differential Con struc tion, re as -sem ble the diaphragm sub as s

Page 5 - SECTION VII

IOM-HP5SECTION VIIVII. TROUBLE SHOOTING GUIDE1. Erratic operation; chattering.Possible Causes RemediesA. Oversized regulator; inadequate rangeabil

Page 6 - CAUTION

IOM-HP6SECTION VIII5. Sluggish operation.Possible Causes RemediesA. Plugged spring chamber vent. A. Clean vent opening.B. Plugged piston balance po

Page 7

IOM-HP7NOTES

Page 8 - FIGURE 1

FIGURE 1Model HP – Metal Seat Item Repair Parts No. Description Kit A Kit B 1 Body 2 Spring Chamber 3 Pressure Plate 4 Spring Button 5 Body Cap

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