Fisher Z500 Manuale utente

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FisherrZ500 Severe Service Ball Valves

Contents

Introduction 1.................................

Scope of Manual 1.............................

Description 1.................................

Specifications 1...............................

Installation 5

....................................

Operation 7...................................

Maintenance 8

..................................

Troubleshooting 9.............................

Packing Replacement 11.......................

Actuator Mounting 13.........................

Parts Ordering 17

................................

Parts List 17.....................................

Figure 1. Fisher Z500 Severe Service Ball Valve

X1200

Introduction

Scope of Manual

This instruction manual provides installation, operation, maintenance, and parts information for the Fisher Z500

Severe Service Ball Valve (see figure 1).

Do not install, operate, or maintain Z500 valves without being fully trained and qualified in valve, actuator, and

accessory installation, operation, and maintenance. To avoid personal injury or property damage, it is important to

carefully read, understand, and follow all the contents of this manual, including all safety cautions and warnings. If you

have any questions about these instructions, contact your Emerson Process Management sales office before

proceeding.

Description

The Z500 severe service ball valve is a split body bolted design, available as fire safe, full or reduced port, with a

blowout proof stem. It can be lever operated, gear operated, or actuated. The Z500 severe service ball valve line is a

simplistic two-piece floating ball design with integral metal seat meant to provide tight metal seating shutoff in high

temperature, high pressure, and erosive applications across all industries.

Specifications

Specifications for these valves are shown in table 1.

Instruction Manual

D103803X012

Z500 Valve

February 2015

Instruction Manual

D103803X012

Z500 Valve

February 2014

Table 1. Specifications

Valve Sizes

Z500: NPS J1/2, J3/4, J1, J1-1/2, J2, J3,

J4, J6, J8, J10, J12, J14, J16, J18, J20,

J24, J26, J28, J30 and, J36

Maximum Working Pressures(1)

Forged Steel Valves: Consistent with applicable

pressure-temperature ratings in table 1 per ASME

B16.34, but do not exceed the material temperature

capabilities shown below.

Shutoff Classification(1)

Z500: Valves are tested to API 598 in the preferred

flow direction. Class V type B per FCI 70-2 in reverse

flow in bi-directional design (Must be specified)

Construction Materials

See table 2

Temperature Capabilities(1)

Welded and Threaded Ends: SA105 - 800_F, F22

1000_F, F91 1200_F, F316 1400_F

Flanged End Connections: SA105 - 600_F, F22 800_F,

F91 1000_F, F316 1000_F

Packing Constructions

Carbon Steel Valve Bodies: Wire reinforced graphite

stem packing AISI 4130 nitrided packing gland

Stainless Steel: Wire reinforced graphite stem

packing 316 SST nitrided packing gland

Dimensions

Contact your Emerson Process Management sales

office

Standard Flow Direction

Preferred Flow Direction: Preferred flow for optimal

sealing is forward into the integral seat

Flow Coefficients

Contact your Emerson Process Management sales

office

Maximum Ball Rotation

90 degrees

Actuator Mounting

The preferred mounting orientation is vertical. Other

orientations are acceptable

Approximate Weight

Contact your Emerson Process Management sales

office

Options

JReduced port, JDouble reduced ports,

JExpanded outlet, JScraper seats, JHVOF

coating options, JBi-directional sealing, JHigh

cycle constructions, JLockouts

1. The pressure/temperature limits in this bulletin, and any applicable code or standard limitation, should not be exceeded.

Instruction Manual

D103803X012

Z500 Valve

February 2014

Table 1. Valve Body Materials, End Connections, and Ratings

Pressure Class Bore Port Size, NPS End Connection Valve Body Materials

CL150 through 1500

0.65

1/2

Buttweld, Socketweld, FNPT

SA105, F22, F91, and F316

3/4

1.15

1-1/2

1.5

1-1/2

2-1/2

Buttweld, Socketweld, FNPT,

RF, RTJ

2-1/2

RF, RTJ

10 10

12 12

14 14

16 16

18 18

20 20

24 24

26 26

28 28

30 30

36 36

-continued-

Instruction Manual

D103803X012

Z500 Valve

February 2014

Table 1. Valve Body Materials, End Connections, and Ratings (continued)

Pressure Class Bore Port Size, NPS End Connection Valve Body Materials

CL2500

0.65

1/2

Buttweld, Socketweld, FNPT

SA105, F22, F91, and F316

3/4

1.15

1-1/2

1.5

1-1/2

2-1/2

Buttweld, Socketweld, FNPT,

RF, RTJ

2-1/2

RF, RTJ

CL4500

0.65

1/2

Buttweld, Socketweld F22, F91, and F316

3/4

1.15

1-1/2

1.5

1-1/2

2-1/2

Table 2. Standard Construction Materials for NPS 1/2 through 18 Valves

PART MATERIAL

Balls F22, 316, F91, and 410

Bodies F22, SA105, F91, and F316

Upstream seats 410/F6A, F22, 316, and F91

Body gaskets S17400, N07718, S66286

Springs S17400, N07718, S66286

End adaptor F22, SA105, F91, and F316

Coatings HVOF chromium carbide

Packing Flexible graphite with S41000 stainless anti-extrusion rings

Shafts (stem) S17400 nitrided, N07718 nitrided, S66286 nitrided (QPQ - quench polish quench)

Key Zinc plated carbon steel

Stem adaptor AISI 4130, 4140

Instruction Manual

D103803X012

Z500 Valve

February 2014

Installation

WARNING

Always wear protective gloves, clothing, and eyewear when performing any installation operations to avoid personal

injury.

Personal injury or equipment damage caused by sudden release of pressure may result if the valve assembly is installed

where service conditions could exceed either the valve body rating or the mating pipe flange joint rating. To avoid such

injury or damage, provide a relief valve for overpressure protection as required by government or accepted industry codes

andgoodengineeringpractices.

Check with your process or safety engineer for any additional measures that must be taken to protect against process

media.

If installing into an existing application, also refer to the WARNING at the beginning of the Maintenance section in this

instruction manual.

WARNING

When ordered, the valve configuration and construction materials were selected to meet particular pressure, temperature,

pressure drop, and controlled fluid conditions. Responsibility for the safety of process media and compatibility of valve

materials with process media rests solely with the purchaser and end-user. To avoid possible personal injury and because

some valve/trim material combinations are limited in their pressure drop and temperature ranges, do not apply any other

conditions to the valve without first contacting your Emerson Process Management sales office.

WARNING

The valve drive shaft is not necessarily grounded to the pipeline when installed. Personal injury or property damage could

result from an explosion caused by a discharge of static electricity from valve components if the process fluid or the

atmosphere around the valve is flammable. If the atmosphere around the valve or the process fluid is flammable,

electrically bond the drive shaft to the valve.

WARNING

Personal injury could result from packing leakage. Valve packing was tightened before shipment; however the packing

might require some readjustment to meet specific service conditions. Check with your process or safety engineer for any

additional measures that must be taken to protect against process media.

When a valve is shipped bare stem:

a. Valve is shipped in the open position with exposed stem

b. Valve will included two stem keys.

When a valve is shipped with mounting kit only:

a. Valve will ship in the in open position

b. Valve will have the mounting finger-tight to the valve

c. Customer shall ensure proper mounting of the actuator

Instruction Manual

D103803X012

Z500 Valve

February 2014

d. Customer shall ensure valve stem has not been pushed or forced down into the valve

e. Customer shall ensure no binding occurs when mounting the actuator

i. Customer shall ensure the correct alignment is done when mounting the actuator

ii. No hammering or forcing down of the stem adaptor is allowed

f. Customer shall ensure all bolts are torqued down appropriately

g. Customer shall ensure the actuator mounting surface is completely flush with the mounting bracket. For

additional information on actuator mounting, refer to the Actuator Mounting section in this instruction manual

on page 13.

h. Customer shall ensure the mounting can allow for or can accommodate expansion of the stem or adaptor at high

temperatures. See table 5.

When a valve is shipped with actuator:

a. Valve will be shipped in the required fail position

b. All bolting will be torqued as required

c. Emerson recommends that the customer not remove the actuator for final installation in the line

1. Inspect the valve prior to installation into the piping system to ensure there is no shipping damage. End protectors

and shipping materials must be removed to allow a complete inspection.

2. Inspect the actuator, if included, for damage and then cycle the valve with the actuator from open (the normal

shipping position) to closed to open to ensure proper functioning. This operation should be smooth.

CAUTION

Make sure the valve is installed in the correct orientation. Put the high pressure side (body side) on the upstream side. The

arrow on the valve should point from the high pressure to low pressure side when the valve is closed. The valve could be

damaged if installed incorrectly.

Weld End Valves

WARNING

Emerson Process Management is not responsible for improper installation or inspection of any valve which falls outside the

criteria presented in this instruction manual. Requests for additional information on unique situations should be directed

to your Emerson Process Management sales office.

CAUTION

Weld fill between the valve and pipe should never be used to correct for improper pipe installation length or misalignment.

Additional welding beyond what is required may cause the valve to reach higher temperatures and have a larger

heat-affected zone, which can cause permanent damage to the valve or its components.

Foradditionalinformation,refertoASMEBoilerandPressureVesselCodeSectionIX.

Instruction Manual

D103803X012

Z500 Valve

February 2014

Procedure

Initial Preparation

1. Ensure the valve is in the fully open position so that vital sealing areas of the ball are not exposed to weld spatter.

2. Never make arc strikes on the valve body or end adaptor except inside the groove intended for butt welding or

inside the corner of the joint for socket welding. Arc strikes made on areas which are not intended to be welded can

cause a localized increase in hardness and micro-cracks, and can otherwise compromise the intended mechanical

properties of the material.

3. Attach the welding ground strap to the side of the valve being welded.

4. Install the valve into the piping system prior to welding in order to minimize piping loads. Orient the valve with the

stem vertical, if possible, and install the piping such that pipe loads are minimized on the valve.

5. Weld the valve into the line using welders and procedures fully qualified per ASME Boiler and Pressure Vessel Code

Section IX.

6. Ensure that the valve body temperature always remains below 427_C(800_F).

Post-Weld Heat Treatment

CAUTION

Depending on valve body materials used, post weld heat treating may be required. If so, damage to internal parts is

possible. Do not place the entire valve in a stress relief furnace, or cover the entire valve with stress relieving blankets, as

this could damage the valve. Contact your Emerson Process Management sales office for additional information.

1. Weld the valve into the line using qualified welders and procedures per Section IX of the ASME Boiler and Pressure

Vessel Code. If specific procedures are required, contact your Emerson Process Management sales office for written

guidance based on pipe and valve materials.

2. Apply post weld heat treat in accordance with valve material and code requirements. Only local post weld heat treat

on each end of the valve must be used.

Final Inspection after Post-Weld Heat Treatment

After post weld heat treat, verify valve body studs and packing studs are tight.

CAUTION

Before cycling the valve in the line, make sure the line is clean of weld slag and other debris that could damage the valve.

Cycle the valve after installation to ensure proper functioning. This operation should be smooth.

1. Cycle the valve to verify proper operation. Ensure that the torque required to cycle the valve has remained within

acceptable limits.

2. Verify that the body and packing bolting are tightened to the correct torque per table 2.

3. Install proper insulation as required for insulated piping systems.

Operation

1. No routine maintenance or lubrication is required. No tightening of body studs should be necessary. Packing

bolting may be retightened if a stem packing leak is noted during operation.

Instruction Manual

D103803X012

Z500 Valve

February 2014

2. Actuators supplied with the valve may require maintenance per the actuator manufacturer's recommendations. For

valves supplied with gears, the grease in the gearbox might need to be cleaned out and replaced periodically. Use

only high temperature grease recommended for gearboxes.

3. Metal-seated ball valves have high torques. See table 2.

Table2.AcceptableTorqueRanges for Body and Packing Bolting

Nominal Stud Size (Inches) Acceptable Torque Minimum (lbf•in) Acceptable Torque Maximum (lbf•in)

1/4 40 110

3/8 72 170

1/2 240 500

5/8 480 960

3/4 780 1600

7/8 1320 2500

11980 3600

4. Valves operate clockwise to close and counter clockwise to open. Gears and actuators are marked with arrows and

symbols to show valve position and operating direction. Lever operated valves have an integral stop plate so that

only the correct operating direction is possible. The lock plate has the “O” for open and the “C” for closed marked to

show proper position. The lever is always aligned with the ball bore for positive proof of ball position. Gears and

actuators have adjustable stops for proper ball positioning.

5. The ball is mate lapped to the end adaptor seat. Both the top of the stem and the stem adaptor are marked to show

the proper orientation of the lapped side of the ball.

6. This valve should be either normally open or normally closed. Throttling with this valve is not recommended for

extended periods. Throttling for brief periods during startup or shutdown is allowed.

Maintenance

Valve parts are subject to normal wear and must be inspected and replaced as necessary. The frequency of inspection

and replacement depends upon the severity of service conditions.

WARNING

Avoid personal injury from sudden release of process pressure. Before performing any maintenance operations:

DDo not remove the actuator from the valve while the valve is still pressurized.

DDisconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the

actuator cannot suddenly open or close the valve.

DUse bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure

from both sides of the valve. Drain the process media from both sides of the valve.

DVent the power actuator loading pressure and relieve any actuator spring precompression.

DUse lock-out procedures to be sure that the above measures stay in effect while you work on the equipment.

DAlways wear protective gloves, clothing, and eyewear when performing any maintenance operations.

DThe valve packing area may contain process fluids that are pressurized, even when the valve has been removed from the

pipeline. Process fluids may spray out under pressure when removing the packing hardware or packing rings.

DCheck with your process or safety engineer for any additional measures that must be taken to protect against process

media.

1. If valve maintenance is required, contact your Emerson Process Management sales office.

Instruction Manual

D103803X012

Z500 Valve

February 2014

Troubleshooting

Operation

DStem adaptor/actuator may be misaligned-- Remove actuator and stem adaptor, then reassemble per assembly

procedures for actuators.

DOver-tightened stem packing-- Loosenpackingtohandtight,cyclevalveand retighten per procedures following

torque table 4.

DInadequate air supply-- Increase air supply or install larger solenoid or quick exhaust valve. Refer to actuator

manufacturer's specifications.

Valve will not Rotate

DValve body ID or bore is clogged-- Flush or clean valve ID and try to cycle valve.

DActuator is not operating correctly or has failed-- Replace or repair actuator and try to cycle valve.

DStem keys have sheared-- Remove adaptor and determine why keys sheared, insert new keys, reassemble and try to

cycle valve.

Valve Stem Packing Leaking

DPacking flange bolting is loose-- Tighten packing bolting. See Packing Replacement section, step 7 on page 12 of

this instruction manual.

DPacking is damaged or improperly installed-- Depressurize valve, remove old packing and replace with new per

assembly instruction steps 3 to 5.

Valve Body Gasket Leaking

DBody bolting is loose-- Tighten body bolting per table 3 and figure 2.

DBody gasket dirty or damaged-- Contact your Emerson Process Management sales office.

Table 3. Body Bolt Torque Values

BOLT SIZE RECOMMENDED TORQUE

mm Inch lbf•ft lbf•in N•m

13 1/2 20 240 27

16 5/8 40 480 54

19 3/4 65 780 88

22 7/8 110 1320 149

25 1165 1980 224

29 1-1/8 240 2880 325

32 1-1/4 335 4020 454

35 1-3/8 450 5400 610

38 1-1/2 600 7200 814

41 1-5/8 725 8700 984

44 1-3/4 1000 12000 1356

Instruction Manual

D103803X012

Z500 Valve

February 2014

Figure 2. Bolting Tightening Pattern

Valve Leaking through Ball or Seating Area

DValve body ID or bore is clogged-- Flush or clean valve ID and try to cycle valve.

DValve is not fully closed-- Close valve, taking care not to over torque.

DActuator travel stops are not set correctly-- Set stops and cycle, checking for leaks.

DSeat or Ball is damaged-- Contact your Emerson Process Management sales office for repair.

Note

If you need additional trouble-shooting assistance, please contact your Emerson Process Management sales office.

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