Emerson Y696VR Instruction Manual

Instruction Manual
Form 5480

June 2009

Y696VR Series Vacuum Regulators

WARNING

!

Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion,

re and/or chemical contamination

causing property damage andpersonal
injury or death.

Fisher® regulators must be installed,
operated, and maintained in accordance
with federal,state, and local codes, rules
and regulations, and Emerson Process
Management RegulatorTechnologies Inc.
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.

Installation, operation, and maintenance

procedures performed by unqualied

personnel may result in improper
adjustment and unsafe operation. Either
condition may result in equipment

damage or personal injury. Use qualied

personnel when installing, operating, and
maintaining the Y696 Series regulator.

Introduction

Scope of Manual

This manual describes and provides instructions and
parts lists for the Type Y696VR and the Type Y696VRM
vacuum regulators. Instructions and parts lists for
other equipment used with these breakers are found in
separate manuals.

W7431

Figure 1. Type Y696VR Vacuum Regulator

Product Description

The Y696VR Series direct-operated vacuum regulators
are used for precise control of small capacity, low­pressure service applications where an increase in
vacuum must be limited. They are described as follows:

Type Y696VR—The Type Y696VR has internal pressure
registration requiring no downstream control line.

Type Y696VRM—The Type Y696VRM has a control
line connection and an O-ring stem seal blocking the
throat for external pressure registration.

Specications

Some general ratings and specications for the

Y696VR Series vacuum regulators are given on page 2.
Individual regulators from the factory are supplied with

the specic data stamped on the nameplate.

Y696VR Series

www.emersonprocess.com/regulators

D102662X012

Y696VR Series

Specications

Body Sizes and End Connection Styles

(1)

See Table 1

Maximum Allowable Emergency Inlet
(Casing) Pressure

(2)

±15 psig (±1,03 bar)

Maximum Allowable Pressure Without Internal
Parts Damage

(2)

±8 psig (±0,55 bar)

Maximum Downstream Pressure

(2)

Full Vacuum

Vacuum Control Pressure Ranges

(2)

See Table 2

Wide-Open Flow Coefcients

Cg: 515; Cv: 14.7; C1: 35

IEC Sizing Coefcients

XT: 0.78; FD: 0.67; FL: 0.89

Spring Case Connection

3/4 NPT

Control Line Connection Connection

1/2 NPT

Gauge Tap Connection

1/4 NPT

Pressure Registration

Type Y696VR: Internal
Type Y696VRM: External

Material Temperature Capabilities

(2)

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

40° to 300°F (4° to 149°C)

Ethyleneproplyene (EPR):

-20° to 275°F (-29° to 135°C)

Peruoroelastomer (FFKM):

0° to 300°F (-18° to 149°C)

Silicone (VMQ): -40° to 400°F (-40° to 204°C)

Approximate Weights

Cast Iron:

45 pounds (20 kg)

Steel, Stainless Steel, or Hastelloy® C:

57 pounds (26 kg)

1. End connections for other than U.S. standards can usually be provided; consult the local Sales Ofce.

2. 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)

1-1/2 (40)

2 (50)

1. All anges are welded on to the body and have a face-to-face dimension of 14-inches (356 mm).

Cast Iron Steel or Stainless Steel Hastelloy® C

NPT

CONSTRUCTION MATERIAL AND END CONNECTION STYLE

NPT, SWE, ANSI CL150 RF,

CL300 RF, or PN 16/25/40

Installation

WARNING

!

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

exceed the limits given in 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 after any overpressure condition.

ANSI CL150 RF

2

VACUUM BEING

CONTROLLED

HIGHER VACUUM SOURCE

VACUUM

PUMP

Figure 2. Type Y696VR Operational Schematic

CONTROL PRESSURE (VACUUM)
OUTLET PRESSURE (VACUUM)
ATMOSPHERIC PRESSURE

Note

Y696VR Series

condensation and clogging.

Principle of Operation

A vacuum regulator maintains a constant vacuum at
the regulator inlet. A decrease in vacuum (increase
in absolute pressure) below the setpoint registers
on the diaphragm and opens the disk. This allows
the pressure from the higher vacuum source to pass
through the regulator and restore the vacuum to its
original setting. On the Type Y696VR, the controlled
pressure registers directly into the diaphragm casing.
The Type Y696VRM has a control line connecting the
diaphragm casing to the vacuum being controlled and
an O-ring stem seal blocking the throat allowing for
registration only through the control line connection.

Startup and Adjustment

To place the vacuum regulator in operation, slowly
introduce inlet or vacuum pressure. The unit takes
control when vacuum is established. This unit operates
within the pressure range stamped on the closing cap.

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

1. Only personnel qualied through training and

experience should install, operate, and maintain
this equipment. For Y696VR Series equipment
that is shipped separately, make sure that there is
no damage to or foreign material in it. Also ensure
that all tubing and piping have been blown free.

2. This equipment may be installed in any position

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

direction indicated by the arrow cast on the body.
If continuous operation is required during inspection
or maintenance, install a three-valve bypass around
the equipment.

WARNING

!

This equipment 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 equipment in hazardous
gas service to a remote, safe location away
from air intakes or any hazardous area.
Protect vent lines and stack openings from

Shutdown

To shutdown the unit, close the upstream shutoff valve
and then close the downstream shutoff valve to vent
the equipment properly. Next, open the vent valve
between the equipment and the nearest downstream
shutoff valve. All pressure between the shutoff valves
is released through the open vent valve.

Maintenance

Equipment parts are subject to normal wear and
must be inspected and replaced as necessary. The
frequency of inspection and replacement of parts
depends on the severity of service conditions and
upon applicable codes and government regulations.

WARNING

!

To avoid personal injury, property
damage, or equipment damage caused by
sudden release of pressure or explosion
of accumulated gas, isolate the regulator
and release internal pressure before
attempting maintenance or disassembly.

Body Area

3

Y696VR Series

Table 2. Vacuum Control Pressure Ranges and Spring Part Numbers

VACUUM CONTROL

PRESSURE RANGE

1 to 3-inches w.c.

1-1/2 to 5-inches w.c.

3 to 8-inches w.c.

8 to 16-inches w.c.

16 to 32-inches w.c.

0.25 to 3 psig

1. Pressure ranges are based on the spring case pointing up. Pointing the spring case down increases the pressure range 1.7-inches w.c. (4 mbar).
(Example: 1 to 3-inches w.c. (2 to 7 mbar) changes to 2.7 to 4.7-inches w.c. (7 to 12 mbar).)

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

(1)

(2 to 7 mbar)
(4 to 12 mbar)
(7 to 20 mbar)

(20 to 40 mbar)
(40 to 80 mbar)
(17 to 207 mbar)

(2)

(2)

(2)

These procedures are for gaining access to the disk

assembly, orice, and body gasket. All pressure must

be released from the diaphragm case before the
following steps can be performed. Key numbers are

CHANGE IN VACUUM

CONTROL PRESSURE TO

REACH WIDE-OPEN

1.5-inches w.c.
2-inches w.c.
3-inches w.c.

4-inches w.c.
7-inches w.c.

1.2 psig

(4 mbar)
(5 mbar)
(7 mbar)

(10 mbar)
(17 mbar)
(83 mbar)

SPRING PART

NUMBER

1D892527022
1D7654000A2
0B0197000A2

1B766627062
1B883327022
1A630627022

SPRING COLOR

Brown

Unpainted

Purple

Gray

Unpainted

Black

pin (key 14).

10. Use a good quality thread sealer when replacing
the body cap assembly (key 38).

referenced in Figure 3.

1. To inspect and replace the disk holder assembly
(key 25), remove the body cap assembly (key 38).

2. If it is necessary to replace the disk holder
assembly (key 25), remove the machine screw
(key 47) and cotter pin (key 14) from the disk
stem (key 40).

Diaphragm and Spring Case Area

These procedures are for gaining access to the control
spring, diaphragm assembly, valve stem, and stem
O-ring. All pressure must be released from the
diaphragm case before these steps can be performed.
Key numbers are referenced in Figure 3.

SPRING WIRE

DIAMETER

0.109-inch

0.120-inch

0.148-inch

0.156-inch

0.187-inch

0.275-inch

(2,8 mm)
(3,1 mm)
(3,8 mm)

(4,0 mm)
(4,8 mm)
(7,0 mm)

3. To inspect and replace the orice (key 27), loosen

the union nut (key 19), tip the diaphragm casing
(key 20) toward the inlet, and separate the
diaphragm casing from the body (key 28).

4. Remove and inspect the body gasket (key 16).

5. Inspect and replace the orice (key 27) if necessary.
Lubricate the threads of the replacement orice with

a good grade of pipe thread sealant and tighten

using 29 to 37 foot-pounds (39 to 50 N•m) of torque.

6. If necessary, install the replacement body gasket
(key 16) into the body (key 28).

7. Slide the union nut (key 19) as far as it will go onto
the diaphragm casing (key 20). Install both halves
of the split ring (key 17) into the slots of the
diaphragm casing (key 20) and secure them by
sliding the union nut down on the split ring.

8. Install the diaphragm casing (key 20) by tightening
the union nut (key 19) until the diaphragm case is
secure on the body (key 28).

9. The disk holder assembly (key 25) consists of the
disk and disk holder, as well as the valve disk washer
(key 46) and the machine screw (key 47). Install
the disk spring (key 41) and valve holder assembly
and secure it to the disk stem (key 40) with the cotter

Type Y696VR Vacuum Regulator

1. Remove the closing cap (key 3) and turn the
adjusting nut (key 2) counterclockwise until all
compression is removed from the control spring
(key 1). If the only further maintenance is to
change the control spring (key 1), skip to step 10.

2. Remove the screws (key 21) and hex nuts (key 22)
and lift off the spring case assembly (key 23).

3. Remove the diaphragm (key 5) and attached
parts by tilting it so that the pusher post (key 8)
slips off the lever assembly (key 9). To separate
the diaphragm (key 5) from the attached parts,
unscrew the diaphragm hex nut (key 37). If the
only further maintenance is to replace the
diaphragm parts, skip to step 8.

4. To replace the lever assembly (key 9), remove the
machine screws (key 11).

5. To replace the valve stem (key 13) pull it out of
the diaphragm casing (key 20) and install a new
valve stem by pushing it into the diaphragm casing.

6. Install the lever assembly (key 9) on the valve
stem (key 13) and secure the lever assembly
(key 9) with the machine screws (key 11).

7. Install the diaphragm head gasket (key 7), lower

4

Y696VR Series

diaphragm head (key 24), diaphragm (key 5), and
upper diaphragm head (key 6) on the pusher post
(key 8) and attach with the hex nut (key 37).

Tighten using 30 to 45 foot-pounds (41 to 61 N•m)

of torque.

8. Install the pusher post (key 8) plus attached
diaphragm parts onto the lever assembly (key 9).

9. Install the spring case assembly (key 23) and control
spring (key 1) on the diaphragm casing (key 20) so
that the vent assembly is correctly oriented, and
secure them with the spring case cap screws

(key 21) and hex nuts (key 22), nger tight only.

10. Install the upper spring seat and the adjusting nut
(key 2) turning clockwise until there is enough
control spring force to provide proper slack to
the diaphragm (key 5) and attached parts. Using

a crisscross pattern, nish tightening the spring

case cap screws (key 21) and hex nuts (key 22)

using 55 to 75 inch-pounds (6 to 8 N•m) of
torque. Then nish turning the adjusting nut

(key 2) to the desired outlet pressure setting.

11. Install a replacement closing cap gasket (key 35)
if necessary, and then install the closing cap
(key 3).

Type Y696VRM Vacuum Regulator

1. Remove the closing cap (key 3) and turn the
adjusting nut (key 2) counterclockwise until all
compression is removed from the control spring
(key 1). If the only further maintenance is to
change the control spring (key 1), skip to step 10.

2. Remove the spring case cap screws (key 21) and
hex nuts (key 22) and remove the spring case
(key 23).

3. Remove the diaphragm (key 5) and attached parts
by tilting it so the pusher post (key 8) slips off the
lever assembly (key 9). To separate the diaphragm
(key 5) from the attached parts, unscrew the
diaphragm hex nut (key 37). If the only further
maintenance is to replace the diaphragm parts or
change the control spring (key 1), skip to step 8.

4. To replace the lever assembly (key 9), remove the
machine screws (key 11) and lever pin.

5. To replace the valve stem (key 13) or stem seal
O-ring (key 15) remove the valve stem from the
diaphragm casing.

6. Lightly grease the new stem seal O-ring (key 15)
and install on the valve stem (key 13). Install the
valve stem by pushing it into the diaphragm casing
(key 20).

7. Install the lever assembly (key 9) on the valve
stem (key 13) and secure the lever assembly
(key 9) with the machine screws (key 11).

8. Install the diaphragm head gasket (key 7), lower
diaphragm head (key 24), diaphragm (key 5),
and upper diaphragm head (key 6) on the
pusher post (key 8) and attach with the hex nut
(key 37). Tighten using 30 to 45 foot-pounds

(41 to 61 N•m) of torque.

9. Install the pusher post (key 8) plus attached
diaphragm parts onto the lever assembly (key 9).

10. Install the spring case assembly (key 23) and control
spring (key 1) on the diaphragm casing (key 20) so
that the vent assembly is correctly oriented, and
secure them with the spring case cap screws

(key 21) and hex nuts (key 22), nger tight only.

11. Turn the adjusting nut (key 2) clockwise until there
is enough control spring (key 1) force to provide
proper slack to the diaphragm (key 5) and

attached parts. Using a crisscross pattern, nish

tightening the spring case cap screws (key 21)
and hex nuts (key 22) using 55 to 75 inch-pounds

(6 to 8 N•m) of torque. Then nish turning the

adjusting nut (key 2) to the desired outlet
pressure setting.

12. Install a replacement closing cap gasket (key 35)
if necessary, and then install the closing cap
(key 3).

Parts Ordering

When corresponding with the local Sales Ofce or

about this regulator, include the type number and all
other pertinent information stamped on the closing
cap or nameplate. Specify the eleven-character part
number when ordering new parts from the following
parts list.

5

Y696VR Series

Parts List

Key Description Part Number

1 Spring
1 to 3-inches w.c. (2 to 7 mbar) 1D892527022
1-1/2 to 5-inches w.c. (4 to 12 mbar) 1D7654000A2
3 to 8-inches w.c. (7 to 20 mbar) 0B0197000A2
8 to 16-inches w.c. (20 to 40 mbar) 1B766627062
16 to 32-inches w.c. (40 to 80 mbar) 1B883327022

0.25 to 3 psig (17 to 207 mbar) 1A630627022
2 Adjusting Nut 1A201914012
3 Closing Cap 1L928308012
4 Lower Spring Seat 1U226019012
5* Diaphragm
Nitrile (NBR) 0R032502052
Fluorocarbon (FKM) 0R0325X0032
Ethylenepropylene (EPR) 0R0325X0062
Silicone 0R0325X0082
6 Upper Diaphragm Head 0B006628982
7* Diaphragm Head Gasket 1L143403022
8 Pusher Post
Stainless steel 0Y096435072
Hastelloy® C 0Y0964X0012
9 Lever Assembly
Stainless steel 1E3409X0052
Hastelloy® C 1E3409X0022
11 Machine Screw (2 Required)
Stainless steel (Standard) 1A866935032
Stainless steel (NACE) 1A8669X0012
Hastelloy® C 1A8669X0022

Key Description Part Number

13 Valve Stem
Stainless steel (NACE) 1A630935032
Hastelloy® C 1A6309X0022
14 Cotter Pin
Stainless steel (Standard) 1A866537022
Stainless steel (NACE) 1A8665X0032
Hastelloy® C 14B7990X012
15* O-Ring (Stem Seal for Type Y696VRM only)
Nitrile (NBR) 1E472706992
Fluorocarbon (FKM) 1N430406382
Ethylenepropylene (EPR) 1D6875X0032

Peruoroelastomer (FFKM) 1D6875X0082

16* Body Gasket 1A348004032
17 Split Ring 0Y095828982
19 Union Nut
Cast iron body 0Z017619062
WCC steel body 0Z017624092
CF8M Stainless steel body 0Z0176X0012
Hastelloy® C 0Z0176X0012
20 Diaphragm Casing
Type Y696VR
Cast iron 3B973519012
WCC Steel
Standard 3F191622012
NACE 3F1916X0022
CF8M Stainless steel 3F191633092
Hastelloy® C 3F1916X0102

*Recommended Spare Parts.

TRIM MATERIAL DISK MATERIAL DISK ASSEMBLY

303 Stainless steel (standard) Nitrile (NBR) 1D6405000D2

316 Stainless steel Peruoroelastomer (FFKM) Disk: 1D6404X0022, Disk Holder: 1D6403X0032

N10276 Hastelloy C Polytetrauoroethylene (PTFE) 1D6405X0152

316 Stainless steel (NACE)

BODY SIZE AND

END CONNECTION STYLE

1-1/2-inch

(DN 40)

2-inch

(DN 50)

Table 3. Disk Holder Assembly Materials and Part Numbers (key 25)

Nitrile (NBR)

Fluorocarbon (FKM)

Peruoroelastomer (FFKM)

PTFE

Ethylenepropylene (EPR)

Disk: 1D6404X0022, Disk Holder: 1D6403X0012

1D6405X0202
1D6405X0212

1D6405X0162
1D6405X0122

Table 4. Body Materials and Part Numbers (key 28)

MATERIAL

Cast Iron WCC Steel

NPT 1B403419012 2P2573X0022 2P2573X0012 - - - - - - - -

SWE - - - - 2P9004X0022 - - - - - - - - - - - -

CL150 RF - - - - 22B4316X022 22B4316X012 22B4316X032 - - - -

CL150 Integral RF - - - - - - - - 44B9592X022 - - - - 44B9592X012

CL300 RF - - - - 23B0825X012 23B0825X022 23B0825X042 - - - -

PN 16/25/40 - - - - 14B3341X032 14B3341X052 14B3341X112 - - - -

NPT 1B403519012 2R140522012 2R1405X00A2 - - - - - - - -

SWE - - - - 22A2572X032 - - - - - - - - - - - -

CL150 RF - - - - 22B9226X022 22B9226X012 14B3341X092 - - - -

CL150 Integral RF - - - - - - - - 44B9593X022 - - - - 44B9593X012

CL300 RF - - - - 14B3341X012 14B3341X022 14B3341X102 - - - -

PN 16/25/40 - - - - 14B3341X042 14B3341X062 14B3341X122 - - - -

CF8M

Stainless Steel

WCC Steel (NACE) Hastelloy C

6

A7176

Y696VR Series

TYPE Y696VRM BODY AND STEM ASSEMBLY DETAIL

A7175

TYPE Y696VR ASSEMBLY

Figure 3. Types Y696VR and Y696VRM Vacuum Regulator Assemblies

7

Y696VR Series

Key Description Part Number Key Description Part Number

20 Diaphragm Casing (continued)
Type Y696VRM
WCC Steel 39A7502X022
CF8M Stainless steel 39A7502X012
Hastelloy® C 39A7502X032
21 Cap Screw (12 required)
Standard 1B136324052
NACE 1B136338992
22 Hex Nut (12 required)
Standard 1A309324122
NACE 1A309338992
23 Spring Case
Cast iron 2B155719042
WCC Steel 34B2157X012
CF8M Stainless steel 34B2157X042
Aluminum AE6180X0012
24 Lower Diaphragm Head 1A3478X0022
25 Disk Holder Assembly See Table 3

27 Orice

303 Stainless steel (standard) 0L025335032
S316 Stainless steel (NACE) 0L0253X0042
Hastelloy® C 0L025335032
28 Body See Table 4
29 Pipe Plug (not shown), use with Y696VR
Cast iron and WCC spring cases 1C333528992
CF8M Stainless steel spring case 1C3335X0022
35* Closing Cap Gasket 1N446206992
36 Adjusting Stem 1A626314012
37 Diaphragm Hex Nut 1A499724122

38 Body Cap Assembly
Stainless steel (standard) 15A2185X022
Stainless steel (NACE) 15A2185X012
Hastelloy® C 15A2185X042
40 Disk Stem
Stainless steel (standard) 0L025135032
Stainless steel (NACE) 0L0251X0022
Hastelloy® C 0L0251X0012
41 Valve Spring
303 Stainless Steel (standard) 0D002827022
316 Stainless Steel (NACE)
or Hastelloy® C 10B6027X012
44 Upper Spring Seat
1 to 3-inches w.c. (2 to 7 mbar) 1A869524092
1-1/2 to 5-inches w.c. (4 to 12 mbar) 1A869524092
3 to 8-inches w.c. (7 to 20 mbar) 1A869524092
8 to 16-inches w.c. (20 to 40 mbar) 1A869524092
16 to 32-inches w.c. (40 to 80 mbar) 1A626424092

0.25 to 3 psig (17 to 207 mbar) 1A626424092
46 Valve Disk Washer
Standard Trim 0X014635032
NACE Trim 0X0146X0012
Hastelloy® C 0X0146X0022
47 Machine Screw 1A866435042
50 Nameplate (not shown) - - - - - - - - - - ­51 Drive Screw (not shown) 1A368228982
56 Vent Assembly (not shown), Y602-11 17A5515X012
71 Pipe Bushing (not shown) 1A3424X0042
95 NACE Tag (not shown) 19A6034X012
96 Tag Wire (not shown) 1U7581X0022

*Recommended Spare Parts.

Industrial Regulators

Emerson Process Management
Regulator Technologies, Inc.

USA - Headquarters
McKinney, Texas 75069-1872 USA
Tel: [phone]
Outside U.S. 1-972-548-3574

Asia-Pacic

Shanghai, China 201206
Tel: [phone]

Europe
Bologna, Italy 40013
Tel: [phone]

Middle East and Africa
Dubai, United Arab Emirates

Natural Gas Technologies

Emerson Process Management
Regulator Technologies, Inc.

USA - Headquarters
McKinney, Texas 75069-1872 USA
Tel: [phone]
Outside U.S. 1-972-548-3574

Asia-Pacic

Singapore, Singapore 128461
Tel: [phone]

Europe
Bologna, Italy 40013
Tel: [phone]
Gallardon, France 28320
Tel: [phone]

TESCOM

Emerson Process Management
Tescom Corporation

USA - Headquarters
Elk River, Minnesota 55330-2445 USA
Tel: [phone]

Europe
Selmsdorf, Germany 23923
Tel: [phone]

Tel: [phone]

For further information visit www.emersonprocess.com/regulators

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business of Emerson Process Management.

The contents of this publication are presented for informational purposes only, and while every effort 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. We reserve the right to modify or improve the designs or specications of such

products at any time without notice.

Emerson Process Management 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 product remains solely with the purchaser.

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