Emerson Tartarini V Series, Tartarini V/60, Tartarini V/50, Tartarini V/51, Tartarini V/61 Instruction Manual

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V Series

Instruction Manual D103666X012

January 2015 - Rev. 00

SUMMARY

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

SEP Statement .................................................................. 1

P.E.D. Categories and Fluid Group ................................... 2

Characteristics ................................................................... 2

Labelling ............................................................................ 2

Overpressure Protection .................................................... 3

Transport and Handling ..................................................... 3

Atex Requirements ............................................................ 3

Operation ........................................................................... 3

Dimensions and Weights ................................................... 4

Installation ......................................................................... 5

Startup ............................................................................... 5

Setting ............................................................................... 5

Shutdown ........................................................................... 6

Periodical Checks .............................................................. 6

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

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

Troubleshooting .................................................................

Parts Lists .......................................................................... 8

Schematic Assemblies ....................................................... 9

INTRODUCTION

Scope of Manual

This manual provides instructions for installation, startup, maintenance and spare parts ordering for the V Series spring-loaded relief valves.

This product has been designed to be used with fuel gases of 1st and 2nd family according to EN 437, and with other non aggressive and non fuel gases. For any other gases, other than natural gas, please contact your local sales agent.

SEP STATEMENT

Emerson Process Management declares this product (V/50 and V/20-2) conforms to Pressure Equipment Directive (PED) 97/23/EC Article 3 section 3 and was designed and manufactured in accordance with sound engineering practice (SEP).

Per Article 3 section 3, this “SEP” product must not bear the CE marking.

Product Description

The V Series are spring-loaded automatic type relief valves.

They are used in reduction, distribution and conveying

stations using suitably ltered natural gas.

They can also be used for air, propane, butane, LPG, city gas, nitrogen, carbon dioxide.

The following versions are available:

V/50 and V/60 : for very low pressure applications

V/51 and V/61 : for low pressure applications

V/52 and V/62 : for middle pressure applications

V/20-2 : for high pressure applications

All standard gas pressure devices (relief valves) used in assemblies will comply to EN 12186 and EN 12279 standards.

Relief Valves

Figure 1. Relief Valves V/50, V/60 Series and Type V/20-2

V Series

P.E.D. CATEGORIES AND FLUID GROUP

The V Series relief valves are designed as functional equipments and they are typically used in gas pressure reducing stations for overpressure protection by releasing small amounts of gas in the event of not perfect pressure relief valve closing.

Table 1. P.E.D. Category for V Series Relief Valves

TYPE CATEGORY FLUID GROUP

V/50 - V/51 - V/52 SEP

1V/60 - V/61 - V/62 I

V/20-2 SEP

If V series relief valve is used as full-capacity relief device (according clause 8.3.2 EN 12186) , downstream equipments protected by this products shall have technical features such as not to be category higher than following category (according Directive 97/23/EC “PED”).

CHARACTERISTICS

End Connection Styles

V/50 Series

1” x 1 1/2” GAS

V/60 Series

1 1/2” x 2” GAS

Type V/20-2

1” x 1” NPT

WARNING

The pressure/temperature limits indicated in this instruction manual or any applicable standard or code limitation should not be exceeded.

Maximum Allowable Pressure

V/50 Series: 4 bar

V/60 Series: 2.5 bar

Type V/20-2: 100 bar

Outlet Set Pressure Ranges

V/50 Series: 0.025 ÷ 2 bar

V/60 Series: 0.025 ÷ 2 bar

Type V/20-2: 1.5 ÷ 40 bar

Minimum/Maximum Allowable Temperature (TS)

See label

Temperature

Standard Version : Working -10° to 60°C

Low Temperature Version : Working -20° to 60°C

Materials

V/50 and V/60 Series

Body / cover : Aluminium

Seat : Brass

Diaphragms : Fabric Nitrile (NBR) + PVC

Pads : Nitrile (NBR) rubber

Type V/20-2

Body : Brass

Pad retainer : Brass

Pad holder : Brass

Adjusting nut : Brass

Pad : Nitrile (NBR) rubber

LABELLING

APPARECCHIO TIPO /DEVICE TYPE

Wau

DN2

DN1

MATRICOLA

bar

SERIALNr.

°C

FLUIDO GRUPPO FLUIDGROUP

ANNO YEAR

HARMONIZEDSTD.

bar

NORMEARMONIZ.

LEAKAGECLASS

CLASSEDI PERDITA

FUNCTIONALCLASS

CLASSEFUNZIONALE

bar

Wao

bar

pao

PS body

bar PT

PS bar

PS covers

bar

pmax

xxxx

body

Notified

BOLOGNAITALY

O.M.T.

1.5Note 4Note 3

Note2

Note 1

Figure 2. Label for V Series Relief Valves

Note 1: See “Characteristics”

Note 2: Year of manufacture

Note 3: Class 1: -10°/60°C

Class 2: -20°/60°C

Note 4: V/50 Series : 4 bar

V/60 Series : 2.5 bar

Type V/20-2 : 100 bar

V Series

OVERPRESSURE PROTECTION

The recommended safety pressure limitations are stamped on the valve label.

Downstream overpressure protection shall be also provided if the inlet pressure can be greater than the PS (see label).

Equipment’s operation below the maximum pressure limitations does not preclude the possibility of damage from external sources or debris in the line.

The relief valve should be inspected for damage after any overpressure condition.

TRANSPORT AND HANDLING

Established transport and handling procedures shall be followed to avoid any damage on the pressure containing parts by shocks or anomalous stresses.

Ringbolts are designed just for handling of equipment weight.

Built-up sensing lines and pressure accessories (e.g. pilots) shall to be protected by shocks or anomalous stresses.

ATEX REQUIREMENTS

If the provisions of EN 12186 & EN 12279, national

regulations, if any, and specic manufacturer

recommendations are not put into practice before installation and if purge by inert gas is not carried out before equipment’s start-up and shut-down operations, a potential external and internal explosive atmosphere can be present in equipment & gas pressure regulating/measuring stations/ installations.

If a presence of foreign material in the pipelines is foreseen and purge by inert gas is not carried out, the following procedure is recommended to avoid any possible external ignition source inside the equipment due to mechanical generated sparks:

• drainage to safe area via drain lines of foreign materials, if any, by inow of fuel gas with low velocity in the pipe-work

(5m/sec)

In any case,

• provisions of Directive 1999/92/EC and 89/655/EC shall be enforced by gas pressure regulating/measuring station/ installation’s end user

• with a view to preventing and providing protection against explosions, technical and/or organizational measures appropriate to the nature of the operation shall be taken

(e.g. : lling/exhausting of fuel gas of internal volume

of the isolated part/entire installation with vent lines to safe area - 7.5.2 of EN 12186 & 7.4 of EN 12279 ; monitoring of settings with further exhaust of fuel gas to safe area ; connection of isolated part/entire installation to downstream pipeline; ….)

• provision in 9.3 of EN 12186 & 12279 shall be enforced by pressure regulating/measuring station/installation’s end user

• external tightness test shall be carried out after each reassembly at installation site using testing pressure in accordance with national rules

• periodical check/maintenance for surveillance shall be carried out complying with national regulations, if any, and

specic manufacturer recommendations.

OPERATION

V/50 and V/60 Series

Figure 3. Closed V/50 Relief Valve

Whenever gas pressure under diaphragm (D) is higher than the force exerted by spring (M), diaphragm is raised causing sleeve (O), which is integral with the diaphragm itself, to

move and thereby open the release orice.

In order to check the efciency of the relief valve, pull up

valve opening stem (S).

Valve setting is carried out by adjusting the compression of spring (M) through the appropriate ring (G).

Valve set point should generally be at an intermediate value between active regulator or monitor and slam-shut valve

(if tted) set points.

In all other cases, it is recommended that relief valve be set at a value at least 15% higher than the working pressure of the equipment.

V Series

Type V/20-2

Figure 4. Closed V/20-2 Relief Valve

Whenever gas pressure under pad (O) is higher than the force exerted by spring (M) in the opposite direction, pad older device (P) is raised, thereby causing the release

orice to open.

Setting is carried out by adjusting the compression of spring (M) through the appropriate ring (G).

It is recommended that relief valve be set at a value at least 15% higher than the operating pressure of the station.

DIMENSIONS AND WEIGHTS

V/50 and V/60 Series

Table 2. V Series Dimensions (mm)

TYPE V/50 SERIES V/60 SERIES

A 236 258

B 164 198

C 43 70

D 95 110

Weight (Kg) 1,3 1,9

Ø B

Figure 5. V/50 and V/60 Series Dimensions

Type V/20-2

63,5

133

Figure 6. Type V/20-2 Dimensions (mm)

Valve Weight 1.6 Kg

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