Emerson 912N Instruction Manual download pdf

912N Series

D100317X012

Instruction Manual

Form 5124

June 2010



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

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

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

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



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



This manual provides installation, maintenance, and parts

information for the 912N Series pressure regulators (Figure 1)

as used in industrial/natural gas applications.



The 912N Series pressure regulators are direct-operated,

spring-loaded devices built to provide accurate, sensitive

control suited to a variety of applications.

As outlet pressure begins to exceed the set pressure, the

diaphragm inside the regulator lifts, operating a lever to

close the inlet. Pressure in excess of the relief valve spring

force opens the relief valve, allowing excess pressure to

bleed through the screened vent in the spring case.



Specications for the 912N Series regulators are given on

page 2.



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

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

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













Like most regulators, the 912N Series regulators have an

outlet pressure rating lower than the inlet pressure rating.

Downstream protection is required if the actual inlet pressure

can exceed the regulator outlet pressure rating or the

pressure rating of any downstream equipment.

P1024

Figure 1. Type 912N Regulator

1 2 3 4

912N Series 1

Summary of Contents

Page 1 - 912N Series

912N SeriesD100317X012Instruction ManualForm 5124June 2010!

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912N Series2Regulator operation within ratings does not preclude the possibility of damage from external sources or from debris in the lines. A regul

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912N Series3If outlet pressure adjustment is necessary, monitor the outlet pressure with a gauge while performing the following procedures:

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