Emerson Y690A Datasheet download pdf (Page 2)

Bulletin 74.1:Y690A

Specications

Available Congurations

Type Y690A: Direct-operated pressure reducing

regulator for outlet pressures up to 7-inches w.c.

(17 mbar) equipped with a pitot tube for greater

regulated capacities.

Type Y690AH: Direct-operated pressure

reducing regulator for outlet pressures up to

7 psig (0,48 bar) equipped with a pitot tube for

greater regulated capacities.

Type Y690AM: Direct-operated pressure

reducing regulator for outlet pressures up to

7-inches w.c. (17 mbar) equipped with a

blocked throat and O-ring stem seal. The

lower diaphragm casing is tapped 1/2 NPT for

control line connection.

Type Y690AHM: Direct-operated pressure

reducing regulator for outlet pressures up to

7 psig (0,48 bar) equipped with a blocked

throat and O-ring stem seal. The lower

diaphragm casing is tapped 1/2 NPT for

control line connection.

Body Sizes

NPS 3/4 or 1 (DN 20 or 25)

End Connection Styles

See Table 1

Maximum Allowable Inlet Pressure

(1)

150 psig (10,3 bar)

Maximum Operating Inlet Pressure

(1)

See Table 4

Maximum Outlet Pressure (Casing)

(1)

150 psig (10,3 bar)

Maximum Emergency Outlet Pressure to Avoid

Internal Parts Damage

(1)

150 psig (10,3 bar)

Outlet Pressure Ranges

(1)

See Table 5

Orice Sizes and Flow and Sizing Coefcients

See Table 2

Pressure Registration

Types Y690A and Y690AH: Internal

Types Y690AM and Y690AHM: External

Flow Capacities

See Tables 9 and 10

Construction Materials

See Table 3

Material Temperature Capabilities

(1)

Nitrile (NBR):

-20° to 180°F (-29° to 82°C)

Fluorocarbon (FKM):

40° to 300°F (4° to 149°C)

Ethylenepropylene (EPDM):

-20° to 275°F (-29° to 135°C)

Peruoroelastomer (FFKM):

-20° to 300°F (-29° to 149°C)

Pressure Setting Adjustment

Adjusting Screw

Spring Case Connection

1/4 NPT

Diaphragm Case Connection

1/2 NPT

Approximate Weight

19 pounds (9 kg)

1. The pressure/temperature limits in this Bulletin and any applicable standard or code limitation should not be exceeded.

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Bulletin 74.1:Y690A 1

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