Cameron WHEATLEY 820 Series Manual de usuario

DISTRIBUTED VALVES

WHEATLEY® Series 822/820

Swing Check Valve

WHEATLEY®

Installation, Operation and Maintenance Manual

DISTRIBUTED VALVES

202/2011 / IOM-WHE-CHECK-822

Installation, Operation and Maintenance Manual

WHEATLEY®SERIES 822/820 CHECK VALVE

Description ........................................................................................... 3

Installation & Operation ........................................................................ 5

Maintenance......................................................................................... 6

Maintenance Schedule.......................................................................... 7

Recommended Spare Parts.................................................................... 7

TABLE OF CONTENTS

DISTRIBUTED VALVES

02/2011 / IOM-WHE-CHECK-822

Installation, Operation and Maintenance Manual

DESCRIPTION

The Wheatley 822/820 swing check valve features a hinged stainless steel clapper with a lip type seal. The

design allows the clapper to swing freely from the closed position to the fully opened position and back.

The cover is threaded to the body and sealed with an O-ring. The cover Is equipped with 1/4” NPT bonnet

access port except sizes 1/2”, 3/4”, 1”. The swing check valve is a full bore type that will pass a sphere

with a nominal size not less that that specified in Table 1 of API 6D.

Due to the critical nature of pressurized piping systems it is recommended that the compatibility to the

service of the metallic and non-metallic components be confirmed prior to installation. This valve is not

recommended for slurry service.

CAUTION

READ CAREFULLY BEFORE INSTALLING OR OPERATING THE VALVE

Hazards are inherent with the construction, operation, and maintenance of high pressure piping

systems. The following information and precautions are provided to minimize these hazards:

1. The valve’s nameplate indicates maximum operating pressure as well as minimum and

maximum operating temperatures. The valve may be safely operated within these limits.

2. The valve’s end connections are available in threaded (NPT), socket weld, and

grooved configurations

3. If the valve is equipped with socket weld ends, it is recommended that the valve be

disassembled prior to welding into the flow system. This will prevent damage to valve

seals due to heat from welding. Removal of cover pipe plug and clapper seal are not

required at disassembly. After welding, reassemble the valve according to the

Reassembly Instructions on page six.

4. The valve has been factory pressure tested based on the nameplate maximum

operating pressure.

5. These valves may be lifted with slings if required. Fittings and other devices, which may

be attached to the valve, are not intended to be used as lifting points. Always follow local

safety regulations when lifting heavy valves.

6. WHEATLEY valves are designed, manufactured, and tested under a certified quality

system. Only quality parts and materials are used in the assembly of WHEATLEY valves.

Pressure containing components are suitable for the minimum temperature marked on

the nameplate. Factory certification is available.

7. If the valve, in service, is exposed to hazards such as traffic, wind, or earthquake loading,

contact the factory, to confirm that the valve design is suitable for the

application. The factory requires a complete description of the hazard before making

any recommendations.

DISTRIBUTED VALVES

402/2011 / IOM-WHE-CHECK-822

Installation, Operation and Maintenance Manual

8. If the valve, in service, is exposed to hazards such as excessive piping system reaction

forces and movements, contact the factory, to confirm that the valve design is suitable for

the application. The factory requires a complete description of the hazard before making

any recommendations.

9. If the valve, in service, is exposed to hazards such as corrosive or abrasive fluids or

atmospheric conditions, contact the factory, to confirm that the valve design

is suitable for the application. The factory requires a complete description of the hazard

before making any recommendations.

10. The valve has been designed and manufactured so that under normal operating

conditions hazards such as material fatique, brittle fracture, creep rupture, or buckling

will not occur. Do not operate the valve beyond the pressures and temperatures marked

on the nameplate. The factory requires a complete description of the hazard before

making any recommendations.

11. The user is responsible for minimizing other hazards associated with the construction,

operation and maintenance of high pressure piping systems, such as:

a. Provisions for the release or blow off of pressure.

b. Prevention of physical access to system under pressure

c. Prevention of physical access to surfaces of extreme temperature

d. Provisions for inspection

e. Provisions for draining and venting

f. Provisions for filling

g. Provisions for equipment access

h. Prevention of over-pressurization, over-heating, and over-filling.

i. Provisions for fault indication

12. The user is responsible for meeting applicable local safety regulations.

DISTRIBUTED VALVES

02/2011 / IOM-WHE-CHECK-822

Installation, Operation and Maintenance Manual

NOTE: If system hydrostatic tests are to be performed at pressures exceeding the rated working

pressure of the valve, the valve should be pressurized from the upstream side. This prevents exposure

of the clapper to these pressures while the body cavity can accept up to 150% rated working pressure.

Care must be taken not to damage the seal faces and that they are clean for assembly. After pressure

tests, with all test pressure relieved, the body cavity should be completely drained via the attached

piping system to prevent corrosion. The valve may then be placed in the required operating position.

HORIZONTAL INSTALLATION

When installing the swing check valve in the horizontal position, install the valve with the arrow mark

on the body pointing in the direction of flow and the cover side up.

OPERATION

Flow through the valve (in the direction of the arrow mark) forces the clapper to lift fully. The

clapper seals the valve when the flow is reversed. Gravity causes the clapper to swing closed

when no flow is present.

VERTICAL INSTALLATION

When installing the swing check valve in vertical piping, install the valve with the arrow mark on the

body pointed in the upward direction. Upward flow through the valve will cause the clapper to swing

open. This valve cannot be used with vertical downward flow.

OPERATION

If there is no flow through the piping, gravity will keep the clapper in the closed position. Flow

through the piping in the upward direction will cause the clapper to swing open. When the

flow is reversed, the flow and weight of the clapper will automatically close the valve.

INSTALLATION & OPERATION

DISTRIBUTED VALVES

602/2011 / IOM-WHE-CHECK-822

Installation, Operation and Maintenance Manual

MAINTENANCE

CAUTION: Safety practices for pressurized equipment must be followed and

address hazards inherent in pressurized systems. Extreme caution and safety

procedures are to be exercised whenever valves, or fittings on a valve, are

serviced or maintained.

DISASSEMBLY:

No special tools are required to disassemble the valve. With all pressure removed

from the associated piping system, the valves can be serviced in-line or offline.

During in-line maintenance, the swing check valve should be isolated from and

relieved of all pressure on both the upstream and downstream sides. Ensure all

line pressure is relieved before removing the plug on the cover. Exercise extreme

caution when removing the plug on the cover. Any residual pressure can cause

the plug to eject unsafely from the cover. Drain the valve fully through the piping

system. Remove the cover, clapper, and hanger (Figure 1).

For offline maintenance, the valve should be removed from the pipeline.

INSPECTION

Inspect the clapper and body seating surface for possible scoring marks or damage. These surfaces

must be smooth. During maintenance, replace the clapper seal with a new seal. Inspect the cover

O-ring seal for damage. Generally, the cover O-ring will last longer than the clapper seal.

REASSEMBLY

Reassemble the valve in accordance with the following instructions. See Figure 1 (page 7):

1. INSTALL SEAL, 7, INTO CLAPPER 4.

2. INSTALL CLAPPER, 4, INTO HANGER, 5

3. INSTALL HANGER, 5, WITH CLAPPER, 4, INTO BODY, 1.

4. INSTALL SEAL, 6, INTO COVER, 2. LUBRICATE THREADS WITH TS-115 LUBRICANT.

5. THREAD COVER, 2, INTO BODY, 1.

6. TIGHTEN COVER, 2, ACCORDING TO CHART ON PAGE 7.

7. WRAP PIPE PLUG, 3, WITH PTFE TAPE 1-2 TURNS (PTFE PASTE MAY ALSO BE USED), AND

INSTALL INTO COVER 2.

8. ENSURE THAT THE CLAPPER SWINGS FREELY INSIDE THE BODY, IS FREE OF OBSTRUCTIONS

AND WILL CLOSE WITHOUT BINDING.

CAUTION

DANGER

DISTRIBUTED VALVES

02/2011 / IOM-WHE-CHECK-822

Installation, Operation and Maintenance Manual

Figure 1:

BODY / COVER MATERIAL

DUCTILE IRON WCC, LCC, CF8M, ALUMINUM BRONZE

SIZE TORQUE FT-LBF. TORQUE FT-LBF.

1-1/2 & 2 116-128 234-257

3 143-157 174-201

4 114-125 232-255

MAINTENANCE SCHEDULE

The frequency of the maintenance depends on the service conditions. Please contact the factory

regarding the maintenance schedule for particular service conditions.

RECOMMENDED SPARE PARTS

RECOMMENDED SPARE PARTS LIST GUIDE

QTY. OF VALVES REPAIR KIT

10 1

25 1

50 2

100 3

REPAIR KIT CONTENTS

PART NAME QUANTITY

Cover O-Ring 1

Clapper Seal 1

Clapper 1

DISTRIBUTED VALVES

01/2011 / IOM-WHE-CHECK-822

Installation, Operation and Maintenance Manual

VALVES & MEASUREMENT

3250 Briarpark Drive, Suite 300

Houston, TX 77042

USA Toll 800 323 9160

For the most current contact and location information go to: www.c-a-m.com

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