Emerson Y692VB Instruction Manual download pdf

Y692VB Series

D102661X012

Instruction Manual

Form 5479

January 2010

www.sherregulators.com

Y692VB Series Vacuum Breakers

Introduction

Scope of the Manual

This manual provides instructions and a parts list

for Types Y692VB and Y692VBM vacuum breakers.

Instructions and parts lists for other equipment used

with these breakers are found in separate manuals.

Product Description

The Y692VB Series vacuum breakers are used for

precise control of small capacity, low-pressure service

applications where an increase in vacuum must be

limited. These direct-operated vacuum breakers come

in NPS 1-1/2 and 2 (DN 40 and 50) body sizes and

have a 3/4 or 1-3/16-inch (19 or 30 mm) orice and

a 3/4-inch (19 mm) spring case vent connection with

optional umbrella vent assembly. The products are

described as follows:

Type Y692VB—Type Y692VB has internal pressure

registration, so it does not require a control line.

Type Y692VBM—Type Y692VBM has a control line

connection and an O-ring stem seal to block the throat

for external pressure registration.

Specications

Some general ratings and specications for the

Y692VB Series vacuum breakers are given on page 2.

Individual vacuum breakers come from the factory with

the specic data stamped on the nameplate.

Installation

WARNING

Personal injury, property damage,

equipment damage, or leakage due to

escaping gas or bursting of pressure-

containing parts may result if this

equipment is overpressured or is

installed where service conditions

could exceed the limits given in the

Specications, 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 this equipment could cause

personal injury or property damage due

to escaping gas. To avoid such injury or

damage, install the equipment in a safe

and well-ventilated location.

Equipment operation within ratings does not preclude

the possibility of damage from debris in the lines

or from external sources. This equipment should

be inspected for damage periodically and after any

overpressure condition.

W7429

Figure 1. Type Y692VB Vacuum Breaker

1 2 3 4 5 6 7 8

Summary of Contents

Page 1 - Y692VB Series Vacuum Breakers

Y692VB SeriesD102661X012Instruction ManualForm 5479January 2010www.sherregulators.comY692VB Series Vacuum BreakersIntroductionScope of the ManualThis

Page 2 - Y692VB Series

Y692VB Series2NoteIf this equipment is shipped mounted on another unit, install that unit according to the appropriate instruction manual. 1. Only p

Page 3

Y692VB Series3INLET PRESSURECONTROL PRESSURE (VACUUM)ATMOSPHERIC PRESSUREType Y692VBB2579VACUUMBEING LIMITEDVACUUMPUMP indicated by the arrow ca

Page 4

Y692VB Series4between the equipment and the downstream shut-off valve nearest to it. All pressure between these shut-off valves is released through t

Page 5

Y692VB Series5 7. Install the lever assembly (key 9) into the valve stem (key 13) and secure the lever assembly (key 9) with the mac

Page 6

Y692VB Series6Table 3. Body Materials and Part Numbers (Key 28)BODY SIZE AND END CONNECTION STYLEMATERIALCast Iron WCB Steel WCB Steel (NACE) CF8M St

Page 7

Y692VB Series7 *Recommended Spare PartsKey Description Part Number 11 Machine Screw (2 Required) Standard 1A866935032 NACE 1A8669X0012

Page 8

Y692VB SeriesThe Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective owners. Fi