Emerson EZH and EZHSO Series Pressure Reducing Regulators Manuál s instrukcemi stáhnout pdf (Strana 2)

Europe,

Middle

East,

and

Africa

Document

Only

Types EZH and EZHSO

INTRODUCTION

Scope of Manual

This manual provides installation, startup, maintenance,

and parts ordering information for the Types EZH and

EZHSO pressure-reducing regulators and Type PRX pilot

with Type SA/2 pilot supply lter regulator.

Information on other equipment used with this regulator is

found in separate manuals.

Product Description

Types EZH and EZHSO regulators are accurate pilot-

operated pressure balanced, soft-seated regulators.

They are designed for use in high pressure natural gas

transmission/city gate stations, large capacity distribution

systems, and power plant feeds. They provide smooth,

reliable operation, tight shutoff, and long life.

Type EZHSO "Spring-to-Open" version could be used

when other overpressure protection options are foreseen,

for example in a monitor conguration. In this case, in

event of failure, the main regulator will stay completely

open, allowing the monitor to take control. The monitor

could be "Spring-to-Close" to ensure a double protection to

downstream pipe.

Available Congurations:

• Types EZH and EZHSO ("E Body")

Single regulator without slam shut

• Types EZH and EZHSO ("X Body")

Single regulator in a X Body

In case of modication made on a pressure equipment

like cap replacement by a slam shut it's mandatory to

comply to the local codes, rules and regulations.

• Types EZH OS2 and EZHSO OS2 ("X Body")

Single regulator with integrated slam shut

Pilot Description

Type PRX Pilot

The Types EZH and EZHSO pressure-reducing regulators

can be equipped with a PRX Series pilot mounted on the

main valve for pressure reducing or wide-open monitoring

applications. The PRX Series pressure reducing pilots

have the ability to handle a wide range of setpoints from

1 to 80 bar:

• Type PRX/120:

Outlet pressure range of 1 to 40 bar. The Type PRX/120

can be used as the pilot on single stage pressure reducing

regulators, as the monitor pilot, or as the working pilot in

wide-open monitor systems.

• Type PRX/120-AP:

Outlet pressure range of 30 to 80 bar. The Type PRX/120-AP

can be used as the pilot on single stage pressure reducing

regulators, as the monitor pilot, or as the working pilot in

wide-open monitor systems.

• Type PRX/125:

Identical to the Type PRX/120, except the restriction screw

is removed. The Type PRX/125 can only be used as the

monitor override pilot on working monitor applications.

• Type PRX/125-AP:

Identical to the Type PRX/120-AP, except the restriction

screw is removed. The Type PRX/125-AP can only

be used as the monitor override pilot on working

monitor applications.

• Type SA/2 Pilot Supply Filter Regulator:

The Type SA/2 pilot supply lter regulator provides a

constant pressure supply to the PRX Series pilot of 3 bar

over the set pressure. The Type SA/2 has an integral

5-micron lter. For easy maintenance a block valve can

be installed to separate the regulator from the pilot.

Regulator Options

• Silencer (Figure 22)

The Type EZH silencer (Whisper III) is integrated in the

regulator and is composed of a drilled cage.

The Whisper III silencer is available for DN 25, 50, 80, and

100 and allows a noise attenuation up to 8dB.

• Flow Coefcient Reduction (Figure 16)

The ow reduction is realised by replacement of the

regulator standard seat by a reduction seat ( key 2).

• Type RPE Electrical Pilot Heater (Figure 25)

The Type RPE is used for reheating the gas supplying

pressure reducing regulator pilots. The Type RPE avoids

the inconveniences caused by freezing which can occur

during high pressure drops.

Actuator

The actuator is an integral pressure type. All pressure parts

are designed to resist up to 100 bar. The diaphragm is

strong and can resist to a differential of 100 bar.

1 2 3 4 5 6 7 ... 35 36

Types EZH and EZHSO 1
LABELLING 5

Komentáře k této Příručce

Žádné komentáře

Emerson EZH and EZHSO Series Pressure Reducing Regulators Manuál s instrukcemi Strana 2

Komentáře k této Příručce

Související produkty a manuály pro Příslušenství a součásti motorových vozidel Emerson EZH and EZHSO Series Pressure Reducing Regulators