Emerson SEMPELL Quick guide

SEMPELL HIGH PRESSURE FORGED CHECK VALVES

Forged steel, swing check and tilting disc conFiguration

HANDLING

WARNING

• Before lifting or handling the valve, make sure

you have no limitations to do it.

• 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.

• 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.

Operating and Safety instructions

INSTALLATION

IMPORTANT

• 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.

• It is recommended to perform piping flushing

before the valve installation. If this is not

possible, the valves must be set with the disc in

full open position before starting with flushing.

• 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.

• For operating temperatures above 200°C

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

recommended.

MAINTENANCE

WARNING

• Depressurize the line before starting any

maintenance. Failure to do so may cause

serious personal injury and/or damage to the

valve.

• In case of valve removal, depressurize the line

before starting any operation with the valve in

open position. Then, close the valve.

These instructions summarise the main

warnings concerning the routine operations as

per the related installation and maintenance

manual.

STORAGE

WARNING

Storage in an open area for a limited period

can be considered only in case the valves have

appropriate packing (packed incases lined with

tarred paper, and contents well protected with

barrier sacks).

• Do not place consignment packages directly on

the ground.

• Do not expose consignment packages to the

weather or directly to the sun.

• Check the packages every two months.

125.4 M16 14

1.25 31.75 M16 14

1.375 34.92 M20 18

1.75 44.45 M20 18

250.8 M24 20

2.25 57.15 M24 20

2.5 63.5 M27 23

2.75 69.85 M27 23

376.2 M27 23

3.25 82.55 M30 28

3.75 95.25 M33 35

⅜M10 30

½M12 70

⅝M16 140

¾M20 260

1M24 580

1⅛ M27 760

1¼ M30 1350

Neither Emerson, Emerson Automation Solutions, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance of any product.

Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.

Sempell is a mark owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. Emerson Automation Solutions, Emerson

and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their respective owners.

The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be

construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are governed by

our terms and conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of such products at any time without

notice.

Emerson.com/FinalControl

TABLE 1 - BOLT TORQUE FOR PACKING

BOLTS

Stem diameter Bolt diameter Torque

in mm mm Nm

TABLE 2 - BOLT TORQUE FOR BONNET

BOLTS

Stem diameter Bolt diameter Torque

in mm mm Nm

SEMPELL HIGH PRESSURE FORGED CHECK VALVES

Forged steel, swing check and tilting disc conFiguration

SERVICE LIMITATIONS

According to PED-ESR, par. 3.3 and related, the design pressure and temperature are indicated

on the nameplate.

IMPORTANT

• To ensure tightness of P.S. 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 (see Tables 1 and 2).

• The segment ring has to be fixed by the safety ring. Ensure that the segment ring is in the correct

position.

PARTS LIST

1Year

2Type

3Size

4Class

5N.A.

6Body

7Stem

8Seat

9Disc

10 Designer

11 Temperature

12 Pressure

13 Shell test

14 Differential pressure set up actuator

15 Temperature minimum

16 Pressure at t.min

17 Temperature maxim

18 Pressure at t.max

19 N.A.

20 N.A.

21 Serial number

22 PED category

23 Fluid

24 N.A.

25 TAG

26 Order number

27 N.A.

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