Baker Hughes Masoneilan 77-80H Series Manuel utilisateur

Baker Hughes Data Classification: Public

Masoneilan™

77-80H/00-80HSeries

Air Valve

Instruction Manual (Rev. A)

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 VARY, 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 –

Please read before installation

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.

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.

Indicates a potentially hazardous situation which, if not avoided,

could result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided,

could result in serious injury.

Indicates a potentially hazardous situation which, if not avoided,

couldresult in minor or moderateinjury.

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

77-80H/00-80H, and do not apply for other valves

outside of this product line.

•These instructions apply to 77-80H/00-80H

operated with our Valve Control System (including

the fluid level gauge). In the case of using the

equipment for other systems, the designers of the

systems or those who decide on the specifications

of the systems should judge the adaptability of the

equipment.

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 itemsare used according to

Baker Hughes

recommended usages. Baker Hughes reserves the

right to discontinue manufacture of any

product

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 pipelines 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 affect the

function and performance of the product.

■Storage

•Store the equipment in places protected from rainwater.

•Store the equipment in places with minimal vibration and impact.

•Keep the equipment in places at normal temperature and humidity (i.e., approximately 23°C

and 65%).

•Protect the connection port with an appropriate component, such as a cap, to prevent the

intrusion of foreign substances after using the equipment.

■Installation

•Do not remove the cap attached to the connection port until just before installation:

a foreign body may enter, which may result in malfunction.

•Install the air instrumentation components so that the air will flow in the direction Indicated

on the equipment, otherwise, it may cause malfunction of the valve.

■Air Source

•Use clear air.

Do not use compressed air that contains chemicals, synthetic oil based on organic solvents, or

corrosive gas, or otherwise an equipment breakdown or operational failure may result.

•Use an air drier or after cooler for air that contains a large quantity of drainage.

Otherwise, the malfunctioning of devices driven by compressed air may result.

■Air Piping

•When you install piping, purge sufficiently inside the piping to remove any chip and/or

foreign body.

•For air piping, use a pipe with a sufficient diameter to operate the valve.

Apply Loctite 577 or equivalent to the air piping joint, except 1 to 1.5 threads at the joint end.

When you use a sealing tape, do not apply it to the 0.5 to 1 threads at the joint end.

Otherwise, a small piece of the tape may clog inside, which may cause malfunction of the valve.

■Maintenance

•Isolate the valve from the control system.

•Make sure that the valve, controller, or any other equipment will not operate suddenly.

•Gradually extract the pressure of air in all the operating lines and disconnect the operating

lines only after the air is entirely extracted.

An unexpected operation may result in personnel being injured or killed.

•For replacement, use the original Masoneilan parts.

Otherwise, malfunction and/or fluid leakage may result.

Content

1. Outline_______________________________________________ 7

2. Specification __________________________________________ 7

3. Installation____________________________________________ 7

5. Maintenance __________________________________________ 8

6. Reassembly___________________________________________ 8

1. Outline

The 77-80H, an air valve that consists of a combination of pilot valve and three-way valve,

is a high-capacity "set pressure control" type three-way valve.

Besides this, there is the 00-80H, the so-called three-way valve - the 77-80H from which

the pilot valve is removed.

In case a plurality of 77-80H valves are needed, use one 77-80H valve and 00-80H

valves for the rest and connect the outlet pressure of the 77-80H's pilot valve to "SIG" of

each 00-80H valve. By so doing, not only piping is simplified but also change-over can be

made simultaneously.

2. Specification

Item

Standard

Option

Max Operating

Pressure

Body

880 kPa

－

Signal

1030 kPa

－

Set Pressure Range

100 –700 kPa

－

Hysteresis

<= 34 kPa

－

Cv Value

IN →OUT

4.56

－

OUT →EXH.

4.25

－

Connection

IN, OUT, EXH.

Ports

Rc1/2

½ NPT

SIGNAL Port

Rc1/4

¼ NPT

Operating Temperature Range

-30 to +70℃

-18 to +100°C (High Temp)

-49 to +80°C (Low Temp)

Housing Material

Aluminum Alloy

－

3. Installation

Prior to installing, clean all lines thoroughly to remove all dirt, scale or other foreign

matter.

Install the air valve as near the actuator as possible, holding the number of connections

to a minimum, so that the air flows in the direction indicated by the marks, ”IN" and "OUT"

on the underside of valve body. There are two "EXH" ports. Use the necessary one and

pipe plug the other. When the valve is to be used as a lock-up valve, the both ports must

be pipe plugged.

The signal pressure piping should be made by connecting the supply pressure directly to

"SIG. IN" so that when the air pressure drops below the set pressure or disappears the

air valve operates to close "IN" and connect "OUT" and "EXH”.

Do not use for air pressures exceeding 880 kPa.

Be careful not to take the signal pressure from near the "IN” side of body because

due to the large capacity of the air valve this gives rise to a change in signal air

pressure, thereby causing hunting.

4. Adjustment

The air valve is normally factory set and does not require adjustment.

If it becomes necessary to adjust set pressure:

A) Turn adjusting screw (19) to relieve range spring (23) of air valve from compression.

B) Connect air supply to “IN” of body to check for closing and opening of body, then connect

pressure gauge and pressure regulator to the signal pressure connection "SIG IN".

C) Turn on air supply pressure and adjust the pressure regulator to set the pressure at a desired

value, observing the air supply pressure to “SIG IN” on the pressure gauge. Then turn the

adjusting screw clockwise until there is no air leak from "OUT" of body. At this point, the air

valve has its "IN" closed and "OUT" and "EHX" communicated.

D) Finally, tighten adjusting screw locknut (20) and connect the air valve outlet and "OUT" to the

actuator and the signal pressure line to the supply pressure.

5. Maintenance

If the air valve does not operate properly, inspect it as follows.

A) Shut off the supply pressure

B) Return the adjusting screw to its former position and loosen the spring.

Disassembling Procedure

Remove four screws (25) and remove O-Ring (15), housing S/A, range spring (23), spring button

(17) and spring case (18) from body (1).

For housing (2), diaphragm S/A (16) and pilot valve (6) can be removed by loosening nut (21) and

pilot retainer (7) respectively.

To disassemble body S/A, first remove bottom cap (26), take out spring (9), remove nut (24) on the

underside of plug S/A and pull out spring washer (22), insert retainer (5) and rubber insert (8).

After that, push up the bottom or plug (3) to remove piston (4) and rubber insert (8) together with

plug.

Inspection should be made in the following way:

First examine diaphragm (16) for rupture and damaged edge. Inspect the seat of pilot valve (6) for

dust and damage. Also inspect O-rings (13) and (14). Replace all of these parts by new ones if

necessary. For the valve body, inspect O-rings (10), (11), (12) and (15) and rubber insert (8).

Replace them with new ones if necessary.

Check the valve seat for dust and clean it.

6. Reassembly

Reverse the disassembly procedure. Before setting to reassembly, apply silicon grease to O-rings.

Do not fail to use a new shim (27).

INLET

PRESSURE

880 kPaG

(125 psiG)

SET RANGE

35 –700 kPaG

(5 –100 psiG)

Rc1/4 (NPT1/4）

SIGNAL

Rc1/2 (NPT1/2）

EXHAUST

Rc1/2（NPT1/2)

OUTLET

Rc1/2 (NPT1/2）

INLET

PRESSURE

880 kPaG

(125 psiG)

SIGNAL

PRESSURE

35 –700 kPaG

(5 –100 psiG)

Rc1/4 (NPT1/4）

SIGNAL

Rc1/2（NPT1/2）

EXHAUST

Rc1/2（NPT1/2）

OUTLET

Rc1/2（NPT1/2）

INLET

Ce manuel convient aux modèles suivants

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