Emerson EZH and EZHSO Series Pressure Reducing Regulators Manuel d'instructions télécharger pdf (Page 13)

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Types EZH and EZHSO

Figure 14. Working Monitoring System Operational Schematic with Two EZH (Spring-to-Close) for DN 25, 50, and 80

R100

TYPE SA/2

TYPE PRX/125

TYPE PRX/120

TYPE EZH TYPE EZH

Inlet pressure (Pu)

Outlet pressure (Pd)

Motorization pressure (Pm)

Pilot feeding pressure (Pup)

Atmospheric pressure (Pb)

The schematic from Figure 14 represents the conguration for

the DN 25, 50, and 80, for the DN 100 the schematic remains

the same with the remark that a check valve (Figure 26) must

be installed between outlet pressure and loading pressure

impulse lines of the regulator and working monitor as well.

INSTALLATION

WARNING

Personal injury or equipment damage, due

to bursting of pressure-containing parts may

result if this regulator is overpressured or

is installed where service conditions could

exceed the limits given in the characteristics

section and on the appropriate nameplate,

or where conditions exceed any rating of

the adjacent piping or piping connections.

To avoid such injury or damage, provide

pressure-relieving or pressure-limiting

devices to prevent service conditions

from exceeding those limits. Also, be sure

that installation is in compliance with all

applicable code and regulations.

Physical damage to the regulator can break

the pilot off the main valve, causing personal

injury and property damage due to bursting

of pressure-containing parts. To avoid such

injury and damage, install the regulator in a

safe location.

Only personnel qualied through training

and experience should install, operate, and

maintain a regulator.

Before installation, make sure that there is no

damage to, or debris in the regulator.

Make sure that all tubing and piping are clean

and unobstructed.

The regulator must be installed on

horizontal pipeline. For the version with

slam shut, the release relay must be

situated towards the bottom.

Installation according to EN 12186

is recommended.

When assembling with adjacent elements

take care not to create pressure force on

the body. The assembling elements (bolts,

O-rings, anges) should be compatible with

the geometry and working conditions of the

equipment. If the case arises a support must

be used to avoid pressure force on the body

(a support can be installed under the anges).

TYPE PRX:

S - BLEED PORT TYPE SA/2

B - SUPPLY PORT V - SENSING

L - MOTORIZATION PORT R - PILOT

A - SENSING PORT M - INLET

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 35 36

Types EZH and EZHSO 1
LABELLING 5

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Emerson EZH and EZHSO Series Pressure Reducing Regulators Manuel d'instructions Page 13

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