PERSTA DVA 200 BZ Bedienungsanleitung

High pressure globe valve

DVA and DVR

Operating instructions

Read the instructions prior to performing any task!

Dok.-Nr. 6404.DE.STD.03.2013, 2, en_GB

Translation of the original operating instructions

Stahl-Armaturen PERSTA GmbH

Mülheimer Str. 18

59581 Warstein-Belecke, Germany

Telephone: +49 2902 762-02

Fax: +49 2902 767-03

Email: [email protected]

Internet: www.persta.com

20.05.2021High pressure globe valve DVA and DVR2

These instructions enable the safe and efficient handling of the

high pressure valve.

The manual is a component of the product and must be kept in the

vicinity of the high pressure valve where it is available to personnel

at all times.

The personnel must have carefully read and understood these

instructions before starting any work. The basic prerequisite for

safe work is compliance with all the specified safety notices and

instructions.

In addition, the local occupational safety regulations and general

safety regulations must be complied with for the high pressure

valve’s area of use.

The illustrations in this manual are provided as examples only and

may deviate from the actual version.

Although the size and pressure ratings of the valve

types vary, the information in these instructions

applies generally to all valves, provided nothing to

the contrary is specified.

This manual applies to the following versions of the high pressure

globe valves DVA and DVR:

Designation Series Nominal diameter (DN)

[mm]

Pressure rate Class*

DVA 200 BZ

202 BZ

204 BZ

80–250 PD 25 £1500

DVA 200 BZ

202 BZ

204 BZ

65–200 PD 40 £2500

DVR 210 KZ

212 KZ

214 KZ

80–250 PD 25 £1500

DVR 210 KZ

212 KZ

214 KZ

65–200 PD 40 £2500

* Assignment number in the pipe construction

Information about the operating

manual

Scope of the document

Supplemental directives

20.05.2021 High pressure globe valve DVA and DVR 3

nIgnition hazard assessment GA004

nConnection diagram provided

nRisk analysis according to Pressure Equipment Directive

nRisk analysis according to Machinery Directive

nActuator instructions

nTechnical data sheet

nBolt tightening torques according to the website:

www.persta.com

nAs well as the other documents included in the delivery

Mülheimer Str. 18

59581 Warstein

Telephone: +49 2902 762-02

Fax: +49 2902 767-03

E-mail: [email protected]

Revision number Change/Supplemented informa-

tion

Date

1 Updates to chapter

“

Intended

use”.

05/05/2021

Other applicable documents

Customer Service - Stahl-Arma-

turen PERSTA GmbH

Revision overview

Supplemental directives

20.05.2021High pressure globe valve DVA and DVR4

Table of contents

1 Overview.............................................................................. 7

2 Safety................................................................................... 9

2.1 Symbols in this manual................................................. 9

2.2 Intended use............................................................... 11

2.3 Safety signs................................................................ 12

2.4 Safety devices............................................................ 13

2.5 Residual risks............................................................. 14

2.5.1 Basic dangers at the workplace............................... 14

2.5.2 Electric shock hazard............................................... 15

2.5.3 Danger due to hydraulics......................................... 15

2.5.4 Hazards associated with the pneumatic system...... 16

2.5.5 Mechanical hazards................................................. 16

2.5.6 Thermal dangers...................................................... 17

2.5.7 Dangers due to hazardous substances and oper-

ating materials......................................................... 17

2.6 Behaviour in the event of an emergency.................... 20

2.7 Responsibility of the operating company.................... 20

2.8 Personnel requirements.............................................. 21

2.9 Personal protective equipment................................... 24

2.10 Spare parts............................................................... 25

2.11 Environmental protection.......................................... 26

3 Functional description..................................................... 27

3.1 Mode of operation of the high pressure globe valve... 27

3.2 Seal to the outside...................................................... 28

3.3 Versions of the high pressure globe valve.................. 29

3.3.1 Shut-off element variants......................................... 29

3.3.2 Actuator variants...................................................... 30

3.3.3 Body shape.............................................................. 32

3.3.4 Display elements..................................................... 32

3.3.5 Connections............................................................. 32

4 Transport and storage...................................................... 35

4.1 Safety notices for transport and storage..................... 35

4.2 Transport of packages................................................ 36

4.3 Storage of the valve.................................................... 37

4.4 Storage of spare parts................................................ 37

5 Installation......................................................................... 39

5.1 Safety notices for installation...................................... 39

5.2 Before the installation................................................. 41

5.3 Installing the valve...................................................... 41

5.4 For electric actuators, connect the power supply....... 42

5.5 For a hydraulic actuator, connecting the hydraulic

system........................................................................ 43

Table of contents

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5.6 For a pneumatic actuator, connecting the pneumatic

system........................................................................ 43

5.7 After the installation.................................................... 44

5.7.1 Pickling the valve..................................................... 45

5.7.2 Painting the valve.................................................... 45

5.7.3 Executing the system pressure test and leak test... 45

5.7.4 Applying thermal insulation...................................... 46

6 Commissioning................................................................. 47

6.1 Safety notices for commissioning............................... 47

6.2 Prior to commissioning............................................... 50

6.3 Executing the commissioning process........................ 51

7 Operation........................................................................... 53

7.1 Safety instructions for operation................................. 53

7.2 Operating the valve..................................................... 55

7.2.1 Valve with manual actuator (handwheel)................. 55

7.2.2 Valve with electric actuator...................................... 55

7.2.3 Valve with hydraulic or pneumatic actuator ............ 56

7.3 Operating the valve in an emergency......................... 57

7.3.1 Valve with manual actuator (handwheel)................. 57

7.3.2 Valve with electric actuator...................................... 58

7.3.3 Valve with hydraulic or pneumatic actuator............. 58

8 Maintenance...................................................................... 59

8.1 Safety instructions for maintenance............................ 59

8.2 Maintenance schedule................................................ 65

8.3 Maintenance tasks...................................................... 66

8.3.1 Visually checking the valve...................................... 66

8.3.2 Lubricating moving parts (stem thread)................... 66

8.3.3 Replacing the gland packing.................................... 68

8.3.4 Replacing the gasket of the pressure sealing

bonnet...................................................................... 75

8.3.5 Dismounting and checking the stem........................ 80

8.4 After maintenance....................................................... 81

9 Faults and fault correction............................................... 83

9.1 Safety notices for fault correction............................... 83

9.2 Fault table................................................................... 86

10 Dismantling, disposal....................................................... 89

10.1 Safety notice for dismantling and disposal............... 89

10.2 Dismantling............................................................... 92

10.3 Disposal.................................................................... 93

11 Index................................................................................... 95

Table of contents

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1 Overview

Fig. 1: High pressure globe valve (shown: model DVA)

1 Actuator (in the example: handwheel)

2 Stem

3 Anti-twist device

4 Bonnet

5 Gland follower flange

6 Gland packing

7 Cover

8 Shut-off element (shown here: throttling valve

cone)

9 Body

The valve designated as high pressure globe valve is designed for

installation in pipes.

The shut-off element is

nFor the DVA a throttling valve cone,

nFor the DVR a regulating cone.

In the closed position, the shut-off element (Fig. 1/8) prevents the

pipeline medium from flowing through the valve.

If the high pressure globe valve DVR is used for regulation, the

flow of the pipeline medium is influenced by the position of the reg-

ulating cone.

The shut-off element is driven in or out via the stem (Fig. 1/2).

The body (Fig. 1/9) of the valve is flanged or welded in the pipe-

work, depending on the version.

Brief description

Overview

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The stem is moved differently depending on the version:

nmanually via handwheel

nelectrically

nhydraulically

npneumatically

Depending on the version of the high pressure globe valve, it can

be used for water, steam, oil, and other non-aggressive media.

The following tools are required for the tasks described in the oper-

ating instructions:

Forklift

Forklift with sufficient load-bearing capacity for transport of valves.

Hoist

Hoist with sufficient load-bearing capacity for transporting valves

and components.

Hook wrench

Hand tool for activating the threaded bush or mounted electric

actuator.

Knock-out tool

Pin-like tool for driving the tension pin out of the stem.

Packing extractor

Tool for removing gland packing elements.

Pin puncher

Mandrel-like tool for punching out the segment rings.

Sling gear

Functional and approved gear for attaching valves and compo-

nents on the hoist.

Actuator variants

Media

Tools

Overview

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2 Safety

2.1 Symbols in this manual

Safety instructions are indicated by symbols in this manual. The

safety instructions are introduced by signal words that indicate the

scope of the hazard.

DANGER!