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Bulletin 71.1:Y690A
May 2012
D102592X012
www.sherregulators.com
Y690A Series Pressure Reducing Regulators
W7293
TYPE Y690A
Figure 1. Y690A Series Direct-Operated Pressure Reducing Regulators
W7291
TYPE Y690AH
Features
Easy Conversion Between Constructions
Converts easily from the Type Y690A to the
Type Y690AM with two O-rings and one machine screw.
Sour Gas Service Capability—For sour gas
applications, the Y690A Series regulators are available in
materials that comply with NACE International Standards
MR0175 and MR0103.
Inlet Pressure Equals Outlet Pressure—Full
inlet pressure capability on the downstream side of
the regulator.
Corrosion Resistance—Multiple regulator constructions
are available in a variety of materials for compatibility with
corrosive process gases.
Multiple Applications—The Y690A Series can be used
for a wide variety of gases including air, nitrogen, natural
gas, sour gas, butane, and propane.
Introduction
The Y690A Series self-contained, spring-loaded regulators
(Figure 1) provide economical pressure reducing control
in a variety of commercial and industrial applications.
The Y690A Series design is ideally suited to control gas
supply to in-plant processing equipment. The rugged
casings and sliding pusher post design withstand the full
150 psig / 10.3 bar inlet pressure at both the inlet and outlet
connections. The sliding pusher post design prevents
damage to internal parts if the downstream pressure
exceeds the setpoint. Because these regulators can
withstand the full inlet pressure, a downstream or internal
relief valve is not required to protect the downstream side of
the regulator.
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Strona 1 - Bulletin 71.1:Y690A

Bulletin 71.1:Y690AMay 2012D102592X012www.sherregulators.comY690A Series Pressure Reducing RegulatorsW7293TYPE Y690A Figure 1. Y690A Series Direct-O

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Bulletin 71.1:Y690A10Figure 4. DimensionsTable 8. DimensionsDIMENSIONS, INCHES / mmBODY SIZEA B D F GDuctile Iron Stainless Steel Ductile Iron Stain

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Bulletin 71.1:Y690A11Ordering GuideType (Select One) Y690A (internal registration)*** Y690AH (high pressure with internal registration)*** Y69

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Bulletin 71.1:Y690A©Emerson Process Management Regulator Technologies, Inc., 1998, 2012; All Rights ReservedThe Emerson logo is a trademark and servic

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Bulletin 71.1:Y690A2SpecicationsAvailable Congurations Type Y690A: Direct-operated pressure reducing regulator for outlet pressures up to 7-inches

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Bulletin 71.1:Y690A3INLET PRESSUREOUTLET PRESSUREATMOSPHERIC PRESSUREB2625Figure 2. Y690A Series Operational SchematicSLIDING PUSHER POSTOVERPRESSURE

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Bulletin 71.1:Y690A4INLET PRESSUREOUTLET PRESSUREATMOSPHERIC PRESSUREDOWNSTREAM CONTROL PRESSUREB2626Figure 3. Types Y690AH and Y690AHM Actuator Casi

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Bulletin 71.1:Y690A5Table 6. Types Y690A and Y690AM Capacities - continued -BODY SIZEOUTLET PRESSURE RANGE, PART NUMBER, AND COLOROUTLET PRESSURE S

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Bulletin 71.1:Y690A6Table 6. Types Y690A and Y690AM Capacities (continued)BODY SIZEOUTLET PRESSURE RANGE, PART NUMBER, AND COLOROUTLET PRESSURE SETT

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Bulletin 71.1:Y690A7Table 7. Types Y690AH and Y690AHM CapacitiesOUTLET PRESSURE RANGE, CONTROL SPRING PART NUMBER, AND COLOROFFSET FROM SETPOINTOUT

Strona 11

Bulletin 71.1:Y690A8Table 7. Types Y690AH and Y690AHM Capacities (continued)Table 7. Types Y690AH and Y690AHM Capacities- continued -OUTLET PRESSURE

Strona 12

Bulletin 71.1:Y690A9Table 7. Types Y690AH and Y690AHM Capacities (continued)OUTLET PRESSURE RANGE, CONTROL SPRING PART NUMBER, AND COLOROFFSET FROM

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