Emerson Sempell series User manual

SEMPELL HIGH PRESSURE FORGED GLOBE VALVES

INSTALLATION AND MAINTENANCE INSTRUCTIONS

VALVE STORAGE

Preparation and preservation for shipment

All valves are properly packed in order

to protect the parts that are subject to

deterioration during transportation and storage

on site. In particular, the following precautions

should be taken:

1. The valves must be packed with the plug in

the closed position.

1a. Buttwelding end valves: weld ends

surface shall be protected with suitable

protective like Deoxaluminite. The ends

shall be closed with plywood or plastic

discs fixed at the edge by strips.

1b.Flanged end valves: the flange sealing

surfaces (raised faces) of the valves shall

be protected with suitable protective

grease. The end faces of the valve must

be protected with plastic or wooden discs

fixed with straps.

2. All actuated valves must be securely

palleted or crated,with particular attention,

in order to ensure that parts of actuator do

not extend beyond the packing size.

3. The type of packing must be defined in the

Customer’s order and shall be appropriate

to ensure safe transportation to final

destination and eventual conservation

before installation.

Before installation these instructions must be fully read and understood

Handling requirements

A - Packed valves

Pallets: Lifting and handling of the packed

valves in pallets will be carried out

by a fork lift truck, by means of the

appropriate fork hitches.

Cases: The lifting of packed valves in cases

will be carried out in the lifting points

and at the center of gravity position

which have been marked. The

transportation of all packed material

must be carried out safely and

following the local safety regulations.

B - Unpacked valves

1. The lifting and the handling of these valves

have to be carried out by using appropriate

means and by respecting the carrying limits.

The handling must be carried out on pallets,

protecting the machined surfaces to avoid

any damage.

2. With large dimensions valves, the sling and

the hooking of the load must be carried out

by using the appropriate tools (brackets,

hooks, fasteners, ropes) and load balancing

tools in order to prevent them from

falling or moving during the lifting and the

handling.

SEMPELL HIGH PRESSURE FORGED GLOBE VALVES

INSTALLATION AND MAINTENANCE INSTRUCTIONS

CAUTION

For valve handling and/or lifting, the lifting

equipment (fasteners, hooks, etc.) must be sized

and selected while taking into account the valve

weight indicated in the packing list and/or delivery

note. Lifting and handling must be made only by

qualified personnel.

Do not use the lifting points located on the

actuator, if any, to lift the valve. These lifting

points are for the actuator only.

FIGURE 1

Valve slinging

Y-type globe valves

Globe valves

NOTE

Storage in an open area for a limited period can be

considered only in case the valves have appropriate

packing (packed in cases lined with tarred paper,

andcontents well protected with barrier sacks).

Caution must be taken during the handling to

avoid that this equipment passes over the workers

or over any other place where a possible fall

could cause damage. In any case, the local safety

regulations must be respected.

INSTALLATION

Preparation before Installation

1. Carefully remove the valve from the

shipping package (box or pallet) avoiding any

damage to the valve or, in case of automated

valves, to the electric or pneumatic/

hydraulic actuator or instrumentation.

2. The valves are shipped with the ends

protected with caps and a thin layer of

protective grease. Before installing the

valve, remove the caps and clean carefully,

then de-grease both surfaces with a solvent.

Clean the inside of the valve with a clean

cloth.

3. Confirm that the materials of construction

listed on the valve nameplates (service and

temperature) are appropriate for the service

intended and are as specified.

4. Define the preferred mounting orientation

with respect to the system pressure. If

any (see arrow on the body), identify the

upstream side and downstream side.

WARNING

See the actuator user manual for the actuator

preparation.

Storage and preservation before installation

In case the valves have to be stored before

installation, the storage has to be carried out

in a controlled way, and has to be performed

inaccordance with the following criteria:

1. The valves have to be stocked in a closed,

clean and dry storage room.

2. The plug must be in the closed position,

and the end faces must be protected with

plastic or wooden discs fixed with straps.

Ifpossible, keep the original protection.

3. Periodical checks have to be carried out

in the storage area to verify that the above

mentioned conditions are maintained.

• Do not place consignment packages directly

on the ground.

• Do not expose consignment packages to the

weather or directly to the sun.

• Check the packaging every two months.

SEMPELL HIGH PRESSURE FORGED GLOBE VALVES

INSTALLATION AND MAINTENANCE INSTRUCTIONS

Handling and lifting of the valves during

installation MUST be performed following the

same criteria and instruction described in

previous points 'Handling requirements' and

'Storage and preservation' before installation.

WARNING

Before lifting or handling the valve or the valve/

actuator assembly, make sure you have no

limitation to do it. Check if there are some safety

messages attached to the lifting points of the

valve or to the actuator (red rigid label) and, if

any, find the proper document in the user manual

which describes how you can operate under safety

conditions.

WARNING

Verify that the direction of the flow of the line

corresponds to the arrow indicated on the valve

body. Valves without the arrow are bi-directional.

WARNING

Before welding, make sure the valve is completely

open.

Installation instructions

Globe valves are normally installed in

horizontal pipe with vertical stem.

These valves can also be installed in vertical or

horizontal pipe with stem other than vertical,

but the maintenance is much more difficult.

Globe valves are usually installed on horizontal

pipe with the same flow direction of the arrow

stamped on the body.

For operating temperatures above 200 °C

(392 °F) a thermal insulation of the valve body

isrecommended.

A - Buttweld valves

1. Open the valve.

2. Position the valve and check for alignment

with the pipe, then proceed with welding,

in accordance with the applicable welding

procedure.

IMPORTANT

It is recommended to perform piping flushing

before installation of valve. If this is not possible,

the valves must be set with the plug in full open

position before starting with flushing.

B - Flanged valves

1. Position the valve between the two flanges

of the pipe and put the seal gasket between

valve flange and pipe flange. Ensure that it

is correctly positioned.

2. Assemble the valve to the pipe by means of

bolts which shall be tightened by using the

crossover method.

3. Progressively reach the requested torque.

IMPORTANT

If piping system is pressurized with water for

testing, and in case the piping system has been

shut down after testing for a long time, the

following recommendations should be adopted.

a. Use corrosion inhibitor with water to

pressurize the piping system.

b. After testing, the piping system should be

depressurized and the test water completely

drained.

Valve verification before start up

1. Tighten the packing just enough to prevent

stem leakage. Over-tightening will decrease

packing life and increase the operating

torque. The bolt torque figures for the

packing bolts can be calculated as indicated

in Table 1.

2. Check the operation of the valve by stroking

it to 'full open' and 'full close'.

3. Should the valve be equipped with electric

actuator, please refer to dedicated

paragraph (page 4) for actuator adjustment

instruction.

M8 39 12

M10 74 24

M12 127 40

M14 200 63

M16 305 96

M18 421 133

M20 588 186

M22 793 251

M24 1006 318

M27 1458 461

M30 1973 623

M33 2662 841

M36 3418 1080

M39 4395 1389

M42 5436 1718

M45 6751 2133

M48 8125 2568

M52 10443 3300

M56 12978 4102

M60 16317 5157

M64 19457 6149

M68 23515 7431

M10 30

M12 70

M14 105

M16 140

M18 200

M20 260

M22 420

M24 580

M27 760

M30 1055

M33 1350

M10 59

M12 101

M14 161

M16 247

M18 341

M20 484

M22 654

M24 834

M27 1223

M30 1660

M33 2250

M36 2894

M39 3746

M42 4637

M45 5789

M48 6888

M52 8869

M56 11055

M60 13711

M64 16568

M68 18242

SEMPELL HIGH PRESSURE FORGED GLOBE VALVES

INSTALLATION AND MAINTENANCE INSTRUCTIONS

Periodic valve verification during service

A - Normal checks

1. Verify every half month that there is no

leakage from packing or in the body/bonnet

area. If the leakage has been detected

from the packing, tighten the gland nuts

(Figure 4, pos. 17) slowly and evenly until the

leakage stops, as indicated in Table 1.

If the leakage has been detected from the

body/bonnet, tighten the nuts (Figure 4,

pos. 10) as indicated in Table 2.

If the leakage does not stop, it is necessary

to replace the body/bonnet gasket or to

replace the packing.

2. Every 3-6 months, depending on operating

frequency, verify the greasing of bearings

and the stem thread.

3. For actuated valves, in addition to above,

please refer also to the warnings in the

actuator manual.

B - Preventive actions

1. Every 6 months verify the tightness of gland

bolts.

2. Every 6 months on motorized valves and

every 8 months on hand operated valves,

grease the stem and the bearings.

3. Every 4 years disassemble the critical

service valves and/or actuated valves, verify

the seat surfaces and lap them again when

necessary. Replace the bonnet gasket and

the packing, clean the stem.

4. For the actuator, proceed as indicated in its

maintenance manual.

Adjustment of electric actuators

1. For each valve equipped with actuator,

atorque calculation has been made.

The size of the actuator is selected on the

base of the calculation.

2. The calculated torque is adjusted in the

open and close direction on the actuator.

This torque is calculated to suit the valve.

3. Before assembling an actuator to a valve,

itis necessary to check:

- The technical data of the actuator.

- The correct adjustment torque.

- The operation instruction.

4. Adjustment of the actuator for GLOBE

valves.

For this reason note that:

• The calculated torque must be adjusted.

• The closing time must not be too short,

because the energy in the close blocked

position depends on the actuator speed.

• The test performed without pressure under

the piston must be avoided, because the

actuator runs with full speed into the seat

without any reaction.

WARNING

In the open direction, only the stop has to be set

with the limit switch. In case the limit switch is not

adjusted, the backseat will be destroyed by the

high torque.

In the close direction, the torque switch shall

be set.

The adjustment of the limit switches has to be

handled when the actuator is assembled to the

valve according to the operation instructions.

TABLE 1 - Torque (Nm) for packing bolts

Diameter

Metric

Material

B7/L7/B16 B8/B8M

TABLE 2 - Torque (Nm) for pressure seal bolts

Diameter

Metric

Material

All

TABLE 3 - Torque (Nm) for body/yoke bolts

Diameter

Metric

Material

B7/B16

SEMPELL HIGH PRESSURE FORGED GLOBE VALVES

INSTALLATION AND MAINTENANCE INSTRUCTIONS

TROUBLESHOOTING GUIDE

Symptom Possible cause Solution

Stem packing leaking 1. Gland flange nuts too loose 1. Check the gland flange nuts torque

2. Packing damaged 2. Replace packing

Body-bonnet leaking 1. Gasket bolting loose (Figure 4, pos. 10) 1. Tighten bolting (Figure 4, pos. 10)

2. Gasket damage 2. Replace the gasket

Valve leaking 1. Valve not fully closed 1. Close the valve

2. Debris trapped in valve 2. Cycle and flush (with valve open) to

remove debris

3. Sealing surface damaged 3. Recondition the seat surface

Jerky operation 1. Packing is too tight 1. Loosen gland nuts, cycle the valve,

retighten

Back seat leaking 1. Back seat damage 1. Recondition the back seat surface

IMPORTANT

To ensure tightness of pressure seal gasket,

pull up bolts must be tightened when the valve is

under fully hydrostatic pressure test or twenty-

four hours in operation.

Yearly checking of bolt torque is recommended.

OPERATION AND MAINTENANCE

INSTRUCTIONS

High pressure forged Sempell valves do

not require special care to work properly.

The following instruction will help provide a

satisfactory and long life service.

Cautions

• Ensure to perform periodic valve verification

as described in dedicated paragraph (page 4).

• In case of actuated valves, always follow the

specific instruction given by the actuator’s

manufacturer.

• Never change the setting of torque and/or

limit switches which have been carefully set

during the final test at our workshop.

Operation and maintenance instructions

Please refer to Figure 4

Assembly

1. All the parts must be cleaned. It is

necessary a visual examination to ensure

that there are no foreign parts inside.

2. The internal seat surface (1.3) must be

carefully lapped in order to avoid any defect.

3. The surfaces of the plug seat (28.1) must be

lapped in order to avoid any defect.

4. Assemble the plug (28) with the plug nut (30)

and screw to the stem (20). Insert now this

unit into the body.

5. Insert the bonnet (2) into the body. Take

care that the operator wears gloves in order

to ensure a careful assembly of the pure

graphite gasket (7), covered with stainless

steel inlets.

6. The ring (6) and the four pieces of the

segment ring (5) must be assembled over

the gasket (7). The segment ring has to be

put into the body groove.

SEMPELL HIGH PRESSURE FORGED GLOBE VALVES

INSTALLATION AND MAINTENANCE INSTRUCTIONS

Disassembly

1. For a correct disassembly it is necessary to

follow in reverse the assembly instructions.

2. Follow this special remark to disassemble

the seat ring: in the upper part of the body,

in the area of the segment ring, there are

some holes to drive out two parts of the

segment ring by using a pin and a hammer.

1. Wired pure graphite.

2. 3 to 4 pure graphite rings with a density

of 1.8 g/cm3.

3. Wired pure graphite.

4. Ground ring.

FIGURE 2

FIGURE 3

Cautions

First, drive out the two parts of the segment

ring as indicated in Figure 3, then the

remaining two parts.

Recommended spare parts

Please refer to Figure 4

• Gasket (7)

• Yoke nut (21)

• Ground ring (13)

• Bearings (22)

• Packing (14)

• Stem (20)

• Globe plug (28) with the plug nut (30)

7. The bonnet must be brought into position

with the necessary bolts and nuts. For the

necessary torque, see Table 2.

8. Install the ground ring (13), the packing of

pure graphite and two rings to the stuffing

room (see Figure 2). The operator MUST

wear gloves.

9. The packing shall be compressed by the

gland (15) and the gland flange (16) with the

cut ring (19) inside. Screw the nuts to the

bolts with the torque indicated in Table 1.

10. Install the indicator (25) on the stem.

11. Assemble the yokenut (21), the two bearings

(22) and the two O-rings (32) to the yoke

with the lubrication nipple, then the gear/

actuator connection flange with the bolts.

12. Assemble the handwheel, the gear or the

actuator to the valve.

IMPORTANT

The segment ring has to be fixed by the safety

ring. Ensure that the segment ring is in the

correct position.

Segment

ring

Segment

ring

VA250.6022 900 09 (160)

VA250.6023 1500 15 (250)

VA250.6024 2500 25 (500)

VA250.6025 4500 45 (720)

SEMPELL HIGH PRESSURE FORGED GLOBE VALVES

INSTALLATION AND MAINTENANCE INSTRUCTIONS

Globe valves

FIGURE 4 FIGURE VA250.6022 TO VA250.6025

Figure Class PN

TRIM MATERIAL TO API 600

Item

Body seat

surface 1.3

Plug seating

surface 28.1 Stem 20

113% Cr 13% Cr 13% Cr

5Stellite Stellite 13% Cr

17% Cr*

8Stellite 13% Cr 13% Cr

12 F316/Stellite F316/Stellite F316 or 17.4

PH below

450°C

Accessory 18

Screw down check

* Over 450°C

MATERIAL SPECIFICATIONS

Item

21 22 23 24 25 26 27 28

-20°C - 425°C -46°C - 425°C 200°C - 540°C 250°C - 550°C 400°C - 575°C 500°C - 650°C -20°C - 450°C 130°C - 650°C

A105 1.0460 LF2 TT5 F1 15Mo3 F12 13CrMo44 F22 10CrMo910 F91 P91 15NiCuMoNb5 F316 X6CrNiNb1810

1.0411 1.5415 1.7335 1.7380 1.4903 1.6368 1.4550

1Body A105 1.0460 LF2 TT5 F1 15Mo3 F12 13CrMo44 F22 10CrMo910 F91 1.6368 F316 X6CrNiNb1810

1.1 Body A105 1.0460 LF2 TT5 F1 15Mo3 F12 13CrMo44 F22 10CrMo910 F91 1.6368 F316 X6CrNiNb1810

1.3 Disc A105 1.0460 LF2 TT5 F1 15Mo3 F12 13CrMo44 F22 10CrMo910 F91 1.6368 F316 X6CrNiNb1810

2Bonnet A105 1.0460 LF2 TT5 F1 15Mo3 F12 13CrMo44 F22 10CrMo910 F91 1.6368/ 13%Cr (1) F316 X6CrNiNb1810

3Yoke A105 A105 A105 A105 A105 A105 A105 A105

4Safety ring A105 A105 A105 A105 A105 A105 A105 A105

5Segment ring A105 1.0460 LF2 TT5 F1 15Mo3 F12 13CrMo44 F22 10CrMo910 F91 F22 1.4903 F316 X6CrNiNb1810

6Ring A105 1.0460 LF2 TT5 F1 15Mo3 F12 13CrMo44 F22 10CrMo910 F91 1.6368 F316 X6CrNiNb1810

7Gasket Pure graphite Pure graphite Pure graphite Pure graphite Pure graphite Pure graphite Pure graphite Pure graphite

8Bolts A193 B7 A193 B7 A193 B7 A193 B7 A193 B7 A193 B7 A193 B7 A193 B7

9Nuts A194 2H A194 2H A194 2H A194 2H A194 2H A194 2H A194 2H A194 2H

10 Plate A194 2H A194 2H A194 2H A194 2H A194 2H A194 2H A194 2H A194 2H

11 Screw A193 B7 A193 B7 A193 B7 A193 B7 A193 B7 A193 B7 A193 B7 A193 B7

13 Ground ring 17Cr 1.4122 17Cr 1.4122 17Cr 1.4122 17Cr 1.4122 17Cr 1.4122 17Cr 1.4122 17Cr 1.4122 17Cr 1.4122

14 Packing Pure graphite Pure graphite Pure graphite Pure graphite Pure graphite Pure graphite Pure graphite Pure graphite

15 Gland F6 F6 F6 F6 F6 F6 F6 F6

16 Gland flange A105 A105 A105 A105 A105 A105 A105 A105

17 Gland nuts A194 2H A194 2H A194 2H A194 2H A194 2H A194 2H A194 2H A194.8

18 Bolts A193 B7 A193 B7 A193 B7 A193 B8 A193 B8 A193 B8 A193 B8 A193 B8

19 Cut ring Pure graphite Pure graphite Pure graphite Pure graphite Pure graphite Pure graphite Pure graphite Pure graphite

21 Yoke nut Bronze B

148 gr.B or

Ni-resist D2

Bronze B

148 gr.B or

Ni-resist D2

Bronze B

148 gr.B or

Ni-resist D2

Bronze B

148 gr.B or

Ni-resist D2

Bronze B

148 gr.B or

Ni-resist D2

Bronze B

148 gr.B or

Ni-resist D2

Bronze B

148 gr.B or

Ni-resist D2

Bronze B 148 gr.B

or Ni-resist D2

22 Bearings Steel Steel Steel Steel Steel Steel Steel Steel

25 Indicator A105 A105 A105 A105 A105 A105 A105 F316

28 Plug F6 F6 F6 F6 F6 F6 F6 F6

30 Plug nut F6 F6 F6 F6 F6 F6 F6 F6

32 O-ring Viton Viton Viton Viton Viton Viton Viton Viton

33 Handwheel Steel Steel Steel Steel Steel Steel Steel Steel

VAY250.6032 900 09 (160)

VAY250.6033 1500 15 (250)

VAY250.6034 2500 25 (500)

VAY250.6035 4500 45 (720)

MATERIAL SPECIFICATIONS

Item

31 32 33 34 35 36 37 38