EVE Brochure Mar2013

8/18/2019 EVE Brochure Mar2013

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Valves Entreprise

DOUBLE BLOCK AND BLEED

EXPANDING PLUG VALVE

know-how makes the difference


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Double Block & Bleed Expanding Plug Valve (DEPV)

The VE® dual expanding plug valve is developed to give a 100% positive sealing in both directions (double block)

independent from each other, and thus isolating pipe segments completely. Any trapped medium in the body cavity

can easily be drained (bled) to avoid any contamination. An automatic thermal relief system will relieve possible over-

pressure of the trapped medium to the pressurised side.

On abrasive liquids the VE® dual expanding plug valve is a much better solution than traditional gate and ball valves.

The sealing is usually provided by a rubber seal that is vulcanised onto two independent operating slips that are me-

chanically fixed to a tapered plug by dove tails.

The body is completely Electro-Nickel Plated (ENP) to avoid corrosion.

The valve comes with standard bore- commonly used for tank storage - or a full-bore option (on request).

Applications

Applications typically include systems for

•

Crude or refined oil storage• Methanol / Ethanol Storage

• Chemical bulk storage

• Bio fuel storage

• Liquefied gases including LNG

• Pump skids

• Hydrant loops

• Pipeline receiver manifolds

• Leak detection systems

• Gas pipelines

• Re-fueling installations

Markets

• Petrochemical refining

• Oil/gas production facilities

• Tank terminals

• Loading/offloading jetty

• Chemical plants


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Integral trunnion

In our unique VE® design the the bottom trunnion is fully integrated on the the lower

plate, preventing particles accumulating under the trim. In older designs dirt can col-

lect and make the valve hard to turn as well as interfering with the correct operation of

the valve.

Also the service space needed underneath the VE valve is minimised compared to

other traditional designs.

Benefits

Normally when double block and bleed function is required, at least three sepa-

rate valves and a spool piece are needed.

VE® dual expanding plug valves have all this combined in one compact body

giving the following benefits

• Saving on individual component costs

• Less space required

• Reduced maintenance

• Easy testing

Complete actuation and testing options

As plants are increasingly controlled remotely, the ability to fit actuation options to valves becomes more important.

ERIKS VE® dual expanding plug valves can be fitted with a wide range of electric, pneumatic or hydraulic actua-

tors. Stem extensions and other modifications can be carried out to meet all your needs, including adding commu-

nication ports if requested.

The complete valve including automation options is built in our Valve Automation centre, and 100% tested by certi-

fied and trained engineers, giving the customer a single point of responsibility for the valve and actuated solution.

In-line repair

The valve has a back seat device so the stem packing can be replaced while the line is under pressure. Provided

the valve is installed with sufficient space under, the slips can also be easily and quickly changed without removing

the bonnet and actuator.

On the VE® valve the upper port of the relief is on the valve body which enables it to remain in place when the

upper trunnion is removed.

Moulded seals

The VE® Dual Expanding Plug Valve has valves seals that are fully bonded (vulcanised)

to the slips, providing durability, strength and a long life.

Non-abrasive sealing

Most standard valves, like gate, butterfly, ball and plug valves, have their seal based on

shear or friction force. The VE® dual expanding plug valve has twin slip seals which are

retracted fully before the valve starts to open. The slips are therefore not subjected to abrasion during operation,

which means a much longer valve life and less maintenance.


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Materials

Standard main component materials (other materials available on request)

Body and Plug : ASTM A216 WCB Electro Nickel Plated

Lower plate, upper plate, yoke : ASTM A216 WCB

Slips : ASTM A 536 80-55-06

Seals (vulcanised) : Viton -Viton , HI P

Viton , fibre reinforced

Viton , low temperature GF

Viton , HI P , low temperature GF

HNBR

Nitrile, HI P

Nitrile, low temperature

Nitrile, modified

FFKM (Perfluoro elastomers e.g. Kalrez)


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Certification

ERIKS VE valves have multiple certifications for a wide range of standards and applications. Certificates can be

viewed online at www.eriks-ve.com

Bore

The VE®

standard bore valves are commonly used for tank storage. Full bore valves are available on request.

Metal to Metal sealingThe VE

®dual expanding plug valve is designed to keep the seals safe from abrasion. Even if the valve is provided

with resilient seals, those are designed to be compressed and reach a 100% leak tight metal to metal sealing.

1. Valve is open:

When the valve is fully open, both seals are protected from the flow path.

2. Valve is rotating:

Valve plug and slips rotate to place seals in closing position, during rotation

there is no contact between the body and seals.

3. Expand slips:

Once valve has rotated the slips 90º, they start approaching perpendicular to

body seats.

4. Valve is closed:

Valve is seated. Chambered Resilient seals have been compressed so they

can’t be damaged by actuator over-torque. Double block and bleed function canbe tested by opening the bleed valve.


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VE Pressure relief system options

There are several options for the bleed system on the VE® dual expanding plug valve several types of bleed

systems in order to meet customer applications.

1. MBBV: Manual Body Bleed Valve

Hand operated bleed valve. The dual expanding plugvalve must always be bled in closed position. Bleedoutlet should be plumbed for drainage to a reser-voir.This bleed valve must be closed before the mainvalve is opened again.

2. DTR: Safety Bleed to Body

For liquid service this system includes a thermal relief valve in order to release theoverpressure which might occur in the body cavity by thermal expansion due to e.g.changing ambient temperatures. This happens automatically when the pressure inthe body cavity goes 25psi above pipeline pressure the small isolation valve in thepipework must be open.

3. MBTR: Manual Bleed and Thermal Relief

This system is a combination of an MBBV and a DTR. This way we can have anautomatic bleed of the body and also check the integrity of the VE Dual ExpandingPlug Valve.

4. ABB: Automatic Body Bleed

This system works when the valve is closing. The valve is opened mechanicallybefore the valve is fully closed, so the spurting liquid should stop, showing positive

verification of double sealing when the valve is fully closed. There’s also an isolatingvalve in the system with a lock open device to avoid any human error.Bleed outlet should be plumbed for drainage to a reservoir

5. Variable pressure option:

In case the pressurised side of the valve is variable, the new VE automatic expansion selector always auto-matically selects the high pressure side.This can either be the inlet or the outlet wherever the pressure is higher.

All these systems can be customized on customers demand if additional equipment like gauges etc are re-

quired.


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Product range

There are two different series of the VE® dual expanding plug valve

available depending on their bore size. The Standard Bore Series andthe Full Bore Series:

Standard Bore Series

These are standard bore valves with a plug port area of a 70% of theFull Bore valves. The port shape has been stream lined to achievemaximum flow and low pressure drop ( see cv values graph).

ANSI Class 150: 2” to 36”



Full Bore Series – API 6D

When full port size is required valve is designed to keep the minimum port area as per API 6D, Maintenance oper-ations like pigging are then easier possible.

ANSI Class 150: 2” to 24”.



All valves are also available flanged in accordance with DIN PN16, PN25 and PN40 standards.

Dimensional data

As standard, all dual expanding plug valves meet the following dimensional aspects:

• Port area: standard bore 70% of pipeline area

• Face to face as per ANSI B 16.10

• Flanged ends as per ANSI B 16.5

• Wall thickness as per API 599

• Couplings for gears and electric actuators as per ISO 5210

•

All bleed and drain connections 1/2” NPT

Full dimensions for each valve with or without manual or automatic operator are available on the ERIKS VE web-site. See www.eriks-ve.com


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ERIKS Valves Entreprise comprise an innovative design, manufacture, marketing and services of high in-

tegrity double block & bleed expanding plug valves. VE® is a well recognized brand and fully accepted by

most of the leading industrial companies in the field of tank storage, refinery, bulk loading, naval and avia-

tion re-fuelling systems and metering systems.

With more than 20 years of experience in the manufacturing of DBB Valves providing customers with an

excellent service and innovative solutions.

ERIKS VE is part of ERIKS, a leading, innovative supplier to the process industry and original equipment

manufacturers.

Econosto UK has been supplying valves into industry since 1984. With three UK warehouses and access

to stock held across the group global locations the company is well placed to provide the widest range of

products on lead times unrivalled by other suppliers.

Econosto UK | Whiteacres | Whetstone | Leicester | LE8 6ZG | UK E: [email protected]

© 2013 Econosto UK. A division of ERIKS Industrial Services Ltd T: +44 (0)116 272 7300

EVE Brochure Mar2013

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