Emerson EZH and EZHSO Series Pressure Reducing Regulators Instrukcja Obsługi Pobierz pdf (Strona 2)

OS2 NACE

MECHANISM BOX (BM)

The mechanism box is designed to close a slam shut valve. The

operation is ensured in two successive stages: a detection stage

and a power stage. The separation between the detection

stage and the power stage provides maximum precision,

indifferent of working pressure, slam shut valve diameter

and gas flow. After activation of the slam shut valve due to over

or under pressure, the mechanism box must be reset manually.

The complete system is available, on request only, sealed with

lead and wire.

SAFETY MANOMETRIC BOX (BMS)

The pressure data is transformed into a displacement by a safety

manometric box (BMS 1) mounted on the mechanism box (BM).

This displacement is used to activate the detection stage of the

mechanism box in the case of overpressure, over or

underpressure, or underpressure condition.

In certain configurations, a second box may be used (BMS 2).

1 - BM 1: Mechanism Box with

1 safety manometric box (BMS 1)

2 - BM 2: Mechanism Box with

2 safety manometric boxes (BMS 1, BMS 2)

3 - BM 1: Mechanism Box with

1 safety manometric box (BMS 1)

Bottom mounted (integrated valve and regulator)

BM 1

BMS 1

BM 2

BMS 2

BMS 1

BM 1

BMS 1

BM 2

BMS 1

BMS 2

4 - BM 2: Mechanism Box with

2 safety manometric boxes (BMS 1, BMS 2)

N01

N02

N03

N04

TYPES OF INSTALLATION

Mounting on horizontal pipeline only:

Top mounted (stand-alone valve)

Europe, Middle East, and Africa Document Only

1 2 3 4 5 6 7 ... 11 12

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Emerson EZH and EZHSO Series Pressure Reducing Regulators Instrukcja Obsługi Strona 2

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