Emerson Y690A Instruction Manual

Instruction Manual Form 5463

February 2009

Y690A Series

Y690A Series Pressure Reducing Regulators

WARNING

Fisher® regulators must be installed, operated, and maintained in accordance with federal, state, and local codes, rules and regulations, and Fisher instructions.

If the regulator vents gas or a leak develops in the system, service to the unit may be required. Failure to correct trouble could result in a hazardous condition.

Call a gas service person to service

the unit. Only a qualied person must

install or service the regulator.

W7293

Introduction

Scope of Manual

This Instruction Manual provides instruction for installation, startup, maintenance, and parts list for the Y690A Series pressure reducing regulators. Instructions and parts lists for other equipment used with these regulators are found in separate manuals.

Description

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 pressure reducing regulator (Figure 1) is ideally suited to control gas supply to in-plant processing equipment. The rugged casings and sliding pusher post design withstands the full 150 psig (10,3 bar) inlet pressure

Figure 1. Types Y690A and Y690AH Direct-Operated Pressure

Reducing Regulators

at both the inlet and outlet connections. Because these regulators can withstand the full inlet pressure, a downstream relief valve is not required to protect the downstream side of the regulator unless full capacity relief is required. Available type numbers are

described in the Specications section.

Specications

The Specications section on page 2 provides the ratings and other specications for the Y690A Series.

The following information is stamped on the regulator at the factory: type number, date of manufacture,

spring range, orice size, maximum inlet pressure, maximum operating outlet pressure, and outlet

pressure which may damage regulator parts.

www.emersonprocess.com/regulators

D102587X012

Y690A Series

Specications

Available Congurations

Type Y690A—Low-pressure, 1 to 7-inches w.c. (2 to 17 mbar), direct-operated regulator with internal registration requiring no downstream control line.

Type Y690AH—High-pressure, 5-inches w.c. to 7 psig (12 mbar to 0,48 bar), direct-operated regulator with internal registration requiring no downstream control line.

Type Y690AM—Low-pressure, 1 to 7-inches w.c. (2 to 17 mbar), direct-operated regulator. The Type Y690AM has a blocked throat and O-ring

stem seal for use when external registration is

required. Lower diaphragm casing assembly is tapped for 1/2 NPT for control line connection.

Type Y690AHM—High-pressure, 5-inches w.c. to 7 psig (12 mbar to 0,48 bar), direct-operated regulator with a blocked throat and O-ring stem

seal for use when external registration is required.

Lower diaphragm casing assembly is tapped for 1/2 NPT for control line connection.

Body Sizes and End Connection Styles

See Table 1

Maximum Allowable Inlet Pressure

(1)

150 psig (10,3 bar)

Maximum Operating Inlet Pressure

(1)

See Table 3

Maximum Outlet (Casing) Pressure

(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 2

Orice Sizes and Flow Sizing Coefcients

See Table 4

Regulator Temperature Capabilities

(1)

With Nitrile (NBR):

-20° to 180°F (-29° to 82°C)

With Fluorocarbon (FKM):

40° to 300°F (4° to 149°C)

With Ethylenepropylene (EPDM):

-20° to 275°F (-29° to 135°C)

With Peruoroelastomer (FFKM):

-20° to 300°F (-29° to 149°C)

Pressure Registrations

Types Y690A and Y690AH: Internal

Types Y690AM and Y690AHM: External

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 Instruction Manual and any applicable standard or code limitation should not be exceeded.

Table 1. Body Sizes and End Connection Styles

BODY SIZE, NPS (DN)

3/4 or 1 (20 or 25) NPT NPT, CL150 RF, CL300 RF, or PN 16/25/40

1. All anges are welded.

Ductile Iron Stainless Steel

BODY MATERIAL

Table 2. Outlet Pressure Ranges

TYPES OUTLET PRESSURE RANGES

Y690A and Y690AM

Y690AH and

Y690AHM

1. To achieve the published outlet pressure range the spring case must be installed pointing down.

2. Do not use Fluorocarbon (FKM) diaphragm with this spring at diaphragm temperatures lower than 60°F (16°C).

1 to 2.5-inches w.c.

2.5 to 7-inches w.c.

5 to 10-inches w.c. 7 to 16-inches w.c.

15-inches w.c. to 1.2 psig

1.2 to 2.5 psig

2.5 to 4.5 psig

4.5 to 7 psig

(2 to 6 mbar) (6 to 17 mbar)

(12 to 25 mbar) (17 to 40 mbar) (37 mbar to 0,08 bar)

(0,08 to 0,17 bar) (0,17 to 0,31 bar) (0,31 to 0,48 bar)

SPRING PART

NUMBER

1B558527052

1B653827052

1B653827052 1B653927022 1B537027052

1B537127022 1B537227022 1B537327052

(1)(2)

(1)

SPRING

COLOR

Orange

Red

Unpainted

Yellow

Light green

Light blue

Black

(1)

SPRING WIRE

DIAMETER,

INCHES (mm)

0.072

0.085

0.105

0.114

0.156

0.187

0.218

(1,83) (2,16)

(2,16) (2,67) (2,90)

(3,96) (4,75) (5,54)

SPRING FREE

LENGTH,

INCHES (mm)

3.78

(96,0)

3.62

(92,0)

3.62

(92,0)

3.75

(95,2 )

4.31

(109)

4.06

(103)

3.94

(100)

3.98

(101)

PITOT TUBE FOR TYPES Y690A AND Y690AH

Y690A Series

VALVE DISK

LEVER

VALVE STEM

B2625

INLET PRESSURE

OUTLET PRESSURE

ATMOSPHERIC PRESSURE

SLIDING PUSHER POST

OVERPRESSURE SPRING

Figure 2. Y690A Series Operational Schematic

Principle of Operation

Refer to Figure 2. When downstream demand decreases, the pressure under the diaphragm increases. This pressure overcomes the regulator setting (which is set by a spring). Through the action of the sliding pusher post assembly, lever, and valve

stem the valve disk moves closer to the orice and reduces gas ow. If demand downstream increases,

pressure under the diaphragm decreases. Spring force pushes the pusher post assembly downward, the

valve disk moves away from the orice, and the gas ow increases.

Table 3. Maximum Operating Inlet Pressures

OUTLET PRESSURE RANGE, PSIG (bar)

ORIFICE

SIZE,

INCHES (mm)

1/8 (3,2) 150 (10,3) 150 (10,3) 150 (10,3) 150 (10,3) 150 (10,3) 150 (10,3) 150 (10,3) 150 (10,3)

1/4

(6,4)

3/8

(9,5)

1/2

(13)

9/16

(14)

Types Y690A and Y690AM Types Y690AH and Y690AHM

1 to

2.5-Inches w.c. (2 to 6 mbar)

(2,8)

(1,4)

(0,69)

(0,34)

2.5 to

7-Inches w.c.

(6 to 17 mbar)

(4,1)

(1,4)

(0,69)

(0,34)

5 to

10-Inches w.c.

(12 to 25 mbar)

(5,2)

(2,4)

(0,55)

(0,34)

7 to

16-Inches w.c.

(17 to 40 mbar)

(5,2)

(2,4)

(0,55)

(0,34)

15-inches w.c.

to 1.2 Psig

(37 mbar to

0,08 bar)

(5,2)

(2,4)

(0,55)

(0,34)

1.2 to 2.5 Psig (0,08 to

0,17 bar)

150

(10,3) (4,1)

(0,69) (0,41)

2.5 to 4.5 Psig (0,17 to

0,31 bar)

150

(10,3)

(4,1)

(0,83)

(0,55)

4.5 to 7 Psig (0,31 to

0,48 bar)

150

(10,3)

(4,1)

(0,83)

(0,55)

ORIFICE SIZE,

INCHES (mm)

1/8

(3,2)

1/4

(6,4)

3/8

(9,5)

1/2

(13)

9/16

(14)

Table 4. Flow and Sizing Coefcients

WIDE-OPEN COEFFICIENTS

(FOR RELIEF VALVE SIZING)

0.35

1.43

3.14

5.71

7.14

12.3 50

110 200 250

35 0.79 0.78 0.50 0.89

IEC SIZING COEFFICIENTS

Y690A Series

HORIZONTAL PIPELINE

B2626

INLET PRESSURE

OUTLET PRESSURE

ATMOSPHERIC PRESSURE

DOWNSTREAM CONTROL PRESSURE

TYPE Y690AH

Figure 3. Types Y690AH and Y690AHM Actuator Casing Drainage Schematics

Installation

WARNING

Personal injury, property damage, equipment damage, or leakage due to escaping gas or bursting of pressurecontaining parts may result if this regulator is overpressured or installed where service conditions could exceed

the limits given in the Specications

section (page 2), or where conditions exceed any ratings of the adjacent piping or piping connections. To avoid such injury or damage, provide pressure-relieving or pressure-limiting devices (as required by the appropriate code, regulation, or standard) to prevent service conditions from exceeding those limits.

Additionally, physical damage to the regulator could cause personal injury or property damage due to escaping gas. To avoid such injury or damage, install the regulator in a safe and well ventilated location.

VENT POINTED DOWN

DOWNSTREAM CONTROL LINE

TYPE Y690AHM

Note

If the regulator is shipped mounted on another unit, install that unit according to the appropriate instruction manual.

1. Only personnel qualied through training and experience should install, operate, and maintain

a regulator. For a regulator that is shipped separately, make sure there is no damage to, or foreign material in the regulator. Also ensure that all tubing and piping are free of debris.

2. The regulator may be installed in any position

as long as the ow through the body is in the

direction indicated by the arrow on the body. Normal installation is with the spring case barrel vertical above or below the diaphragm case. However, when using a Type Y690A or Y690AM regulator, for proper operation to achieve the published capacities, the spring case barrel should be installed pointed down as shown in Figure 1. For complete actuator drainage of Types Y690AH and Y690AHM, the regulator should be installed as shown in Figure 3. If continuous operation of the system is required during inspection or maintenance, install a three valve bypass around the regulator.

Regulator operation within ratings does not preclude the possibility of damage from debris in the lines

or from external sources. A regulator should be

inspected for damage periodically and after any overpressure condition beyond the emergency outlet

pressure limit specied in the Specications section

(page 2). Key numbers referenced in this section are shown in Figures 5, 6, and 7.

WARNING

A regulator may vent some gas to the atmosphere. In hazardous or

ammable gas service, vented gas may

accumulate and cause personal injury,

death, or property damage due to re or

explosion. Vent a regulator in hazardous gas service to a remote, safe location

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