Emerson Fisher Y692VB Series User manual

WARNING

Introduction

This Installation Guide provides instructions for

installation, startup and adjustment. To receive a

copy of the Instruction Manual, contact your local

Sales Office or view a copy at www.fisher.com. For

further information refer to Y692VB Series Instruction

Manual, D102661X012.

PED Category

This product may be used as a safety accessory

with pressure equipment in the following Pressure

Equipment Directive. It may also be used outside

of the Pressure Equipment Directive using Sound

Engineering Practice (SEP) per table below.

For information on the current PED revision see

Bulletin: D103053X012.

Specifications

Body Sizes and End Connection Styles(1)

DN 40 / NPS 1-1/2 : NPT, SWE, CL150 RF,

CL300 RF and PN 16/25/40

DN 50 / NPS 2: NPT, SWE, CL125 FF, CL150 RF,

CL300 RF and PN 16/25/40

Maximum Allowable Inlet (Positive) Pressure(2) and

Orifice Sizes

19 mm / 3/4-in. Orifice: 2.1 bar / 30 psig

30 mm / 1-3/16-in. Orifice: 0.90 bar / 13 psig

Vacuum Control Pressure Ranges(2)

See Table 1

Maximum Casing Pressure(2)

0.55 bar / 8 psig Vacuum

Pressure Registration

Type Y692VB: Internal

Type Y692VBM: External

Spring Case Connection

3/4 NPT

Type Y692VB Gauge Tap Connection

1/4 NPT

Type Y692VBM Control Line Connection

1/2 NPT

Temperature Capabilities(2)

Nitrile (NBR): -40 to 82°C / -40 to 180°F

Fluorocarbon (FKM): 4 to 149°C / 40 to 300°F

Ethylenepropylene (EPR): -29 to 93°C /

-20 to 200°F

Perfluoroelastomer (FFKM): -18 to 149°C /

0 to 300°F

Silicone: -40 to 204°C / -40 to 400°F

Approximate Weight

Cast Iron: 20 kg / 45 lbs

Steel, Stainless Steel or Hastelloy®C: 26 kg /

57 lbs

Installation

Only qualified personnel shall install

or service a vacuum breaker. Vacuum

breaker should be installed, operated

and maintained in accordance with

international and applicable codes

and regulations and Emerson Process

Management Regulator Technologies,

Inc. instructions.

If using a vacuum breaker on a

hazardous or flammable fluid service,

personal injury and property damage

could occur due to fire or explosion of

vented fluid that may have accumulated.

To prevent such injury or damage,

provide piping or tubing to vent the

fluid to a safe, well ventilated area or

containment vessel. Also, when venting

a hazardous fluid, the piping or tubing

should be located far enough away

from any buildings or windows so to

not create a further hazard and the vent

opening should be protected against

anything that could clog it.

Installation Guide

D102661X014

January 2010

Y692VB Series

PRODUCT SIZE CATEGORY FLUID TYPE

DN 40 to 50 /

NPS 1-1/2 to 2 I 1

Hastelloy®C is a mark owned by Haynes International, Inc.

1. End connections for other than U.S. standards can usually be provided; consult your local Sales O󰀩ce.

2. The pressure/temperature limits in this Installation Guide and any applicable standard or code limitation should not be exceeded.

Y692VB Series

WARNING

Personal injury, equipment damage

or leakage due to escaping fluid or

bursting of pressure-containing parts

may result if this vacuum breaker is

overpressured or is installed where

service conditions could exceed the

limits given in the Specifications

section 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 limits.

Additionally, physical damage to the

vacuum breaker could result in personal

injury and property damage due to

escaping fluid. To avoid such injury and

damage, install the vacuum breaker in a

safe location.

Clean out all pipelines before installation of the

vacuum breaker and check to be sure the vacuum

breaker has not been damaged or has collected

foreign material during shipping. For NPT bodies,

apply pipe compound to the external pipe threads.

For flanged bodies, use suitable line gaskets and

approved piping and bolting practices. Install the

vacuum breaker in any position desired, unless

otherwise specified, but be sure flow through the body

is in the direction indicated by the arrow on the body.

Startup

The vacuum breaker is factory set at approximately

the midpoint of the spring range or the pressure

requested, so an initial adjustment may be required

to give the desired results. With proper installation

completed and vacuum breakers properly adjusted,

slowly introduce inlet pressure. The unit takes

control when vacuum is established. This equipment

is suitable for the vacuum control pressure range

stamped on the nameplate.

Adjustment

To adjust the pressure setting, remove the closing cap

and turn the adjusting nut clockwise to increase the

pressure setting or counterclockwise to decrease the

setting. Replace the closing cap after adjustment. The

closing cap may be wired to the hole provided in the

spring case to discourage tampering.

Taking Out of Service (Shutdown)

To avoid personal injury resulting from

sudden release of pressure, isolate the

vacuum breaker from all pressure before

attempting disassembly.

To shut down the unit, close the upstream shut-off

valve, and then close the downstream shut-off valve to

vent the equipment properly. Next, open the vent valve

between the equipment and the downstream shut-off

valve nearest to it. All pressure between these shut-off

valves is released through the open vent valve.

Table 1. Vacuum Pressure Information

VACUUM CONTROL PRESSURE RANGE(1) CHANGE IN VACUUM CONTROL PRESSURE TO REACH WIDE-OPEN

mbar in. w.c. mbar in. w.c.

2 to 7(2)

7 to 20(2)

20 to 40

40 to 80

17 mbar to 0.21 bar

1 to 3

3 to 8

8 to 16

16 to 32

0.25 to 3 psig

0.14 bar

1.2

4.0

5.0

10.5

2 psig

1. Pressure ranges are based on the spring case pointing up. Pointing the spring case down increases the pressure range 4 mbar / 1.7 in. w.c..

(Example: 2 to 7 mbar / 1 to 3 in. w.c. changes to 7 to 12 mbar / 2.7 to 4.7 in. w.c..

2. Do not use uorocarbon (FKM) with these springs at diaphragm temperatures lower than 4°C / 40°F.

4875

35 44

37 19 14

474628161311242022

272517

Y692VB Series

Parts List

Key Description

1 Spring

2 Adjusting Nut

3 Closing Cap

4 Lower Spring Seat

5* Diaphragm

6 Upper Diaphragm Head

7* Lower Head Gasket

8 Pusher Post

9 Lever Assembly

11 Machine Screw (2 Required)

13 Valve Stem

14* Cotter Pin

15* O-Ring (Stem Seal for Type Y692VBM only)

16* Body Gasket

17 Split Ring

19 Union Nut

20 Diaphragm Casing

21 Cap Screw (12 required)

22 Hex Nut (12 required)

23 Spring Case

24 Lower Diaphragm Head

25* Disk Holder Assembly

27 Orifice

28 Body

29 Pipe Plug (Use on Type Y692VB)

35* Closing Cap Gasket

36 Adjusting Stem

37 Diaphragm Hex Nut

44 Upper Spring Seat

46 Valve Disk Washer

47 Machine Screw

51 Drive Screw

56 Vent Assembly, Y602X1-11 (not shown)

71 Pipe Bushing (not shown)

95 NACE Tag (NACE Construction only, not shown)

96 Tag Wire (NACE Construction only, not shown)

Key Description

* Recommended Spare Part

Figure 1. Y692VB Series Assembly

19 14

474628161311

272517

50 51

TYPE

ORIFICE

SPRING

RANGE

DATE MFGD.

FISHER GOVERNOR CO.

MARSHALLTOWN, IOWA,USA

734 BVB

1”

3 - 8” WC

2 - 54

Y692VB Series

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Emerson Automation Solutions

Fisher.com

The Emerson logo is a trademark and service mark of Emerson Electric

Co. All other marks are the property of their prospective owners.

Fisher™ is a mark owned by Fisher Controls International LLC, a

business of Emerson Automation Solutions.

The contents of this publication are presented for informational

purposes only, and while every e󰀨ort has been made to ensure their

accuracy, they are not to be construed as warranties or guarantees,

express or implied, regarding the products or services described herein

or their use or applicability. All sales are governed by our terms and

conditions, which are available upon request. We reserve the right to

modify or improve the designs or specications of such products at any

time without notice.

Emerson Process Management Regulator Technologies, Inc does not

assume responsibility for the selection, use or maintenance of any

product. Responsibility for proper selection, use and maintenance of any

Emerson Process Management Regulator Technologies, Inc. product

remains solely with the purchaser.

Figure 2. Type Y692VBM O-Ring Stem Seal Detail Figure 3. Y692VB Series Nameplate Detail

Americas

McKinney, Texas 75070 USA

T +1 800 558 5853

+1 972 548 3574

Europe

Bologna 40013, Italy

T +39 051 419 0611

Asia Pacic

Singapore 128461, Singapore

T +65 6777 8211

Middle East and Africa

Dubai, United Arab Emirates

T +971 4 811 8100

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