Baker Hughes Masoneilan 77-6 Manuale utente

Masoneilan™

77-6 Model

Air Lock-up Valve

Instruction Manual (Rev. B)

Baker Hughes Data Classication : Public

THESE INSTRUCTIONS PROVIDE THE CUSTOMER/OPERATOR WITH IMPORTANT PROJECT-SPECIFIC

REFERENCE INFORMATION IN ADDITION TO THE CUSTOMER/OPERATOR’S NORMAL OPERATION

AND MAINTENANCE PROCEDURES. SINCE OPERATION AND MAINTENANCE PHILOSOPHIES, BAKER

HUGHES COMPANY (AND ITS SUBSIDIARIES AND AFFILIATES) DOES NOT ATTEMPT TO DICTATE

SPECIFIC PROCEDURES, BUT TO PROVIDE BASIC LIMITATIONS AND REQUIREMENTS CREATED BY

THE TYPE OF EQUIPMENT PROVIDED.

THESE INSTRUCTIONS ASSUME THAT OPERATORS ALREADY HAVE A GENERAL UNDERSTANDING

OF THE REQUIREMENTS FOR SAFE OPERATION OF MECHANICAL AND ELECTRICAL EQUIPMENT

IN POTENTIALLY HAZARDOUS ENVIRONMENTS. THEREFORE, THESE INSTRUCTIONS SHOULD

BE INTERPRETED AND APPLIED IN CONJUNCTION WITH THE SAFETY RULES AND REGULATIONS

APPLICABLE AT THE SITE AND THE PARTICULAR REQUIREMENTS FOR OPERATION OF OTHER

EQUIPMENT AT THE SITE.

THESE INSTRUCTIONS DO NOT PURPORT TO COVER ALL DETAILS OR VARIATIONS IN EQUIPMENT

NOR TO PROVIDE FOR EVERY POSSIBLE CONTINGENCY TO BE MET IN CONNECTION WITH

INSTALLATION, OPERATION OR MAINTENANCE. SHOULD FURTHER INFORMATION BE DESIRED

OR SHOULD PARTICULAR PROBLEMS ARISE WHICH ARE NOT COVERED SUFFICIENTLY FOR THE

CUSTOMER/OPERATOR’S PURPOSES THE MATTER SHOULD BE REFERRED TO BAKER HUGHES.

THE RIGHTS, OBLIGATIONS AND LIABILITIES OF BAKER HUGHES AND THE CUSTOMER/OPERATOR

ARE STRICTLY LIMITED TO THOSE EXPRESSLY PROVIDED IN THE CONTRACT RELATING TO THE

SUPPLY OF THE EQUIPMENT. NO ADDITIONAL REPRESENTATIONS OR WARRANTIES BY BAKER

HUGHES REGARDING THE EQUIPMENT OR ITS USE ARE GIVEN OR IMPLIED BY THE ISSUE OF THESE

INSTRUCTIONS.

THESE INSTRUCTIONS ARE FURNISHED TO THE CUSTOMER/OPERATOR SOLELY TO ASSIST IN THE

INSTALLATION, TESTING, OPERATION, AND/OR MAINTENANCE OF THE EQUIPMENT DESCRIBED.

THIS DOCUMENT SHALL NOT BE REPRODUCED IN WHOLE OR IN PART WITHOUT THE WRITTEN

APPROVAL OF BAKER HUGHES.

Safety Information

Important-PleaseReadBeforeInstallation

These instructions contain DANGER, WARNING, and

CAUTION labels, where necessary, to alert you to safety

related or other important information. Read the instructions

carefully before installing and maintaining your control

valve. DANGER and WARNING hazards are related to

personal injury. CAUTION hazards involve equipment or

property damage. Operation of damaged equipment can,

under certain operational conditions, result in degraded

process system performance that can lead to injury or

death. Total compliance with all DANGER, WARNING,

and CAUTION notices is required for safe operation.

CAUTION

WARNING

DANGER

This is the safety alert symbol. It alerts you to potential

personal injury hazards. Obey all safety messages that

follow this symbol to avoid possible injury or death.

CAUTION

WARNING

DANGER

Indicates a potentially hazardous situation which, if not

avoided, could result in death or serious injury.

CAUTION

WARNING

DANGER

Indicates a potentially hazardous situation which, if not

avoided, could result in serious injury.

CAUTION

WARNING

DANGER

Indicates a potentially hazardous situation which, if not

avoided, could result in minor or moderate injury.

CAUTION

WARNING

DANGER

When used without the safety alert symbol indicates a

potentially hazardous situation which, if not avoided, could

result in property damage.

Note: Indicates important facts and conditions.

About this Manual

• The information in this manual is subject to change

without prior notice.

• The information contained in this manual, in whole or

part, shall not be transcribed or copied without Baker

Hughes’s written permission.

• Please report any errors or questions about

the information in this manual to your local supplier.

• These instructions are written specifically for the 77-6

Model Air Lock-up valve control valves, and do not apply

for other valves outside of this product line.

Useful Life Period

The current estimated useful life period for the 77-6

Model Air Lock-up valve control valves is 25+ years. To

maximize the useful life of the product, it is essential to

conduct annual inspections, routine maintenance and

ensure proper installation to avoid any unintended stresses

on the product. The specific operating conditions will also

impact the useful life of the product. Consult the factory

for guidance on specific applications if required prior to

installation.

Warranty

Items sold by Baker Hughes are warranted to be free

from defects in materials and workmanship for a period

of one year from the date of shipment provided said

items are used according to Baker Hughes recommended

usages. Baker Hughes reserves the right to discontinue

manufacture of any product or change product materials,

design or specifications without notice.

Note: Prior to installation

The valve must be installed, put into service and

maintained by qualified and competent professionals who

have undergone suitable training.

All surrounding pipe lines must be thoroughly flushed to

ensure all entrained debris has been removed from the

system.

Under certain operating conditions, the use of damaged

equipment could cause a degradation of the performance

of the system which may lead to personal injury or death.

Changes to specifications, structure, and components

used may not lead to the revision of this manual unless

such changes

Please read these instructions carefully BEFORE this

instrument is installed or maintained.

These converters are intended for use in industrial

compressed air systems only. Ensure that adequate pressure

relief provision is installed if application of system supply

pressure could cause downstream equipment to malfunction.

Installation should be in accordance with local and national

compressed air and instrumentation codes.

Products certified for use in explosion-proof or intrinsically

safe installations MUST:

a) Be installed in accordance with local and national codes

for hazardous area installations, and in accordance with

this manual.

b) Only be used in situations which comply with the

certification conditions stated in this handbook.

c) Only be maintained by qualified personnel with adequate

training on hazardous area implementation. Before using

these products with fluids other than air or for non-

industrial applications consult Baker Hughes.

Installation

Do not use for air pressures exceeding 250 psi.

Prior to installing, clean all lines thoroughly to remove all

dirt, scale or other foreign matter. Install the lock-up valve

in the controller output line as near to the control valve

diaphragm chamber as possible, holding the number of

connections to a minimum—so that the air flows through

the body in the direction indicated by the words INLET and

OUTLET marked on the underside of valve body.

The signal pressure line should be connected upstream

of the air supply regulator to provide effective response of

the lock-up valve in the event of air failure. Be sure all pipe

connections are tight.

Do not install this Air Lock-up Valve in air lines

which exceed 250 psi (1.72 MPa, 17.2 bar) pressure.

CAUTION

WARNING

DANGER

CAUTION

WARNING

DANGER

Adjustment

The lock-up valve is normally factory set (i.e., 20 psi for 3-15

psi operation or 35 psi for 6-30 psi operation) and should not

require adjustment. If, however, it becomes necessary to

adjust the setting an air supply, with a gauge and regulator,

should be piped to the signal pressure connection after: (1)

relieving compression on the range spring of the lock-up

valve; and (2) connecting the instrument output line to the

inlet connection of the lock-up valve.

Instrument output pressure need be sufficient only to

determine the open and closed position of the lock-up valve.

Turn the air supply pressure on until the pressure gauge

indicates the desired set pressure, then turn the adjusting

screw down until no air pressure may be felt coming from

the outlet of the lock-up valve. The valve will be fully closed

at this point.

Finally, tighten the adjusting screw locknut and connect:

(1) the lock-up valve outlet connection to the control valve

diaphragm chamber; and (2) the signal pressure line to the

signal pressure connection of the lock-up valve. Turn on

and set the air supply to operating pressure. Be sure that all

pipe connections are tight.

Maintenance

Due to their design and intended application, maintenance

difficulties are not expected to be encountered with these

valves. If they fail to perform in a satisfactory manner, it may

be due to accumulation of dirt in one or more of the parts.

If necessary to disassemble, proceed as follows, after:

(1) shutting off supply pressure; and (2) relieving spring

compression by backing off the adjustment screw.

Remove the four body cap screws (16); body cap (15), body

cap O-ring (14), range spring (3), upper spring button (2)

and spring case (9) will come free from body (7).

To free diaphragm S/A (10) and inlet valve S/A (12) from

the body, place the wrench on the insert retainer (13) and

unscrew from the body insert (5). Remove the body insert

O-ring (6) and slide the diaphragm S/A, the body insert and

the inlet valve S/A from the body. Holding the inlet valve

from turning, unscrew inlet valve locknut (4) and remove

diaphragm S/A from the inlet valve. Turn the inlet valve out

of body insert.

Check all ports to be sure they are clear of dirt. Inspect

the diaphragm S/A for rupture or for damage around the

edge. If necessary, install a new diaphragm S/A. Check the

inlet valve for wear. If the inlet valve is roughed-up or pitted,

replace with new one.

To reassemble the lock-up valve, perform all operations in

reverse order to that used in disassembly. Note: The O-ring

on the inlet valve stem should be lubricated before the inlet

valve is reassembled in the body insert.

Note: Considering the high labor costs involved in

replacing internal parts, it may be more economical

to stock complete units.

Prior to performing maintenance on the Air Lock-up

Valve, shut off the supply pressure and remove the

spring compression by backing off the adjustment

screw.

It is recommended that the Air Lock-up Valve be

removed from the line for repairs.

Ref. Qty Part Name Ref. Qty Part Name

1 1 Adjusting Screw 91 Spring Case

21Upper Spring Button 10 1Diaphragm S/A

31Range Spring 11 1 Inlet Valve O-Ring

41Inlet Valve Locknut 12 1 Inlet Valve S/A

51 Body Insert 13 1Insert Retainer

6 2 O-Rings 14 1 Body Cap O-Ring

71Body 15 1 Body Cap

81Locknut • 16 4Body Cap Screws

• Not visible in cutaway view.

Signal Pressure

Notes

is” basis for general information purposes. Baker Hughes does not make any representation as to the accuracy

or completeness of the information and makes no warranties of any kind, specic, implied or oral, to the fullest

extent permissible by law, including those of merchantability and tness for a particular purpose or use. Baker

Hughes hereby disclaims any and all liability for any direct, indirect, consequential or special damages, claims

for lost prots, or third party claims arising from the use of the information, whether a claim is asserted in

contract, tort, or otherwise. Baker Hughes reserves the right to make changes in specications and features

shown herein, or discontinue the product described at any time without notice or obligation. Contact your

Baker Hughes representative for the most current information. The Baker Hughes logo is a trademark of Baker

Hughes Company.

GEA31168B 12/2019

valves.bhge.com

DIRECT SALES OFFICE LOCATIONS

AUSTRALIA

Brisbane:

Phone: +61-7-3001-4319

Fax: +61-7-3001-4399

Perth:

Phone: +61-8-6595-7018

Fax: +61-8-6595-7299

Melbourne:

Phone: +61-3-8807-6002

Fax : +61-3-8807-6577

BRAZIL

Phone: +55-19-2104-6900

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Phone: +86-10-5738-8888

Fax: +86-10-5918-9707

FRANCE

Courbevoie

Phone: +33-1-4904-9000

Fax: +33-1-4904-9010

INDIA

Mumbai

Phone: +91-22-8354790

Fax: +91-22-8354791

New Delhi

Phone: +91-11-2-6164175

Fax: +91-11-5-1659635

ITALY

Phone: +39-081-7892-111

Fax: +39-081-7892-208

JAPAN

Tokyo

Phone: +81-03-6871-9008

Fax: +81-03-6890-4620

KOREA

Phone: +82-2-2274-0748

Fax: +82-2-2274-0794

MALAYSIA

Phone: +60-3-2161-0322

Fax: +60-3-2163-6312

MEXICO

Phone: +52-55-3640-5060

RUSSIA

Veliky Novgorod

Phone: +7-8162-55-7898

Fax: +7-8162-55-7921

Moscow

Phone: +7 495-585-1276

Fax: +7 495-585-1279

SAUDI ARABIA

Phone: +966-3-341-0278

Fax: +966-3-341-7624

SINGAPORE

Phone: +65-6861-6100

Fax: +65-6861-7172

SOUTH AFRICA

Phone: +27-11-452-1550

Fax: +27-11-452-6542

SOUTH & CENTRAL

AMERICA AND THE CARIBBEAN

Phone: +55-12-2134-1201

Fax: +55-12-2134-1238

SPAIN

Phone: +34-935-877-6605

UNITED ARAB EMIRATES

Phone: +971-4-8991-777

Fax: +971-4-8991-778

UNITED KINGDOM

Bracknell

Phone: +44-1344-460-500

Fax: +44-1344-460-537

UNITED STATES

Jacksonville, Florida

Phone: +1-904-570-3409

Deer Park, Texas

Phone: +1-281-884-1000

Fax: +1-281-884-1010

Houston, Texas

Phone: +1-281-671-1640

Fax: +1-281-671-1735

bakerhughes.com

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