Butterf ly ValvesHigh Performance

A Long Experience in Energy Equipment and one Goal:

The Cus tomer ’s sa t i s fac t ion .

®

Class ANSI 150 LBS = ISO PN20Class ANSI 300 LBS = ISO PN50

Design

2

Extended valve neck

Fire safe

Modular design

Compact

Anti blowout stem

Easy maintenance

Streanlined disc

®

VALVITALIA reserves the right to change design, specification and materials without notice

3

Double offset disc

Double external sealing

Dynamic bi-directional sealing (with anti bowout soft seal)

Shaft upstreamLine pressure compresses seal energizer wich forces fhe seal ring and increases seals effectiveness.

Shaft downstreamThe force produced causes the soft seal ring to move and increases the primary sealing force.

VALVITALIA reserves the right to change design, specification and materials without notice

Features

4

Design

Two types: wafer and lug

The same valve can be fitted with different sealing assemblies: soft seal and soft seal + metal (FIRELOCK fire safe option).

No hole, screw or nut located on the in-line sealing surface.

The valve neck is long enough to allow the use of DYNALOK on insulated pipes.

Mechanical travel stop in closed position built in the body.

Streamlined disc

Gives maximum flow characteristics with minimum pressure drop.

External sealings

External tightnesses achieved by O’ring with graphite back-up.

Easy maintenance

Gland packing can be retrofitted whithout dismantling the operating device.

Seat seal can be replaced without dismantling the disc.

Double offset disc

This concept allows the disc to come freely away from the seat at the opening, preventing seat scuffing and cold flow.

The rotation being whithout contact, friction torque is cancelled.

At closing, the came effect gives the necessary force to tighten the seal.

VALVITALIA reserves the right to change design, specification and materials without notice

®

5

Applicable standardsDesign

Product

Face-to-face

Body contact face

Testing leaktightness

Fire safe according to:

Marking

Non-destructive examination:

Visual inspection

Positive materialsidentification (PMI)

On request, according to:

- Radiography procedure

- Magnetic particle examination

- Dye penetrant examination

ASME B 16.34

API 609 Category B

API 609 table 2 (3”-24”)

ISO 5752 serie 20 (30”-36”)

ASME B 16.5

API 6 D

API 598

API 607

MSS SP-25

MSS SP-55

ASME B 16.34 par. 8.3

special class valve

- appendix B

- appendix C

- appendix D

Fire safeThe fire safeconception meets the following riquirements:

- Operator protection

- Installation safety

- Preventing fire extension

- Keeping valve under operation for fluid transfer

The applicable standard is API 607

Therefore the design of DYNALOK valves includes the following specific features in the FIRELOK version:

- Graphite back-up on all external seals

- Steel gasket ensuring metal-to-metal contact on the disc after destruction of the soft seal.

VALVITALIA reserves the right to change design, specification and materials without notice

Construction

6

Materials to NACE MR 01.75 standard on request.

Others material on request ( Duplex, 6 Mo . . . )

VALVITALIA reserves the right to change design, specification and materials without notice

®

7 VALVITALIA reserves the right to change design, specification and materials without notice

Dimensions

8

Connection ISO PN 40 on request

VALVITALIA reserves the right to change design, specification and materials without notice

®

9 VALVITALIA reserves the right to change design, specification and materials without notice

Pressure/Temperature

10

Pressure / Temperature service diagrams for valvesfitted with glass filled PTFE seals.

VALVITALIA reserves the right to change design, specification and materials without notice

®

11

Flow coefficient

VALVITALIA reserves the right to change design, specification and materials without notice

Operating Torques

Operation

12VALVITALIA reserves the right to change design, specification and materials without notice

®

13

Typical applications

VALVITALIA reserves the right to change design, specification and materials without notice

Abv Rock / Moda

Air Products

Amoco

Ashland Oil

Bethlehem Steel

Bringe Oils

Canadian Superior Oil

Chevron

Chinese Petroleum

Cryogenic Cons.

E. I. Dupont

FSC Paper

General Electric

Gulf Oil

Henkel

Honeywell Inc.

14

Main References

Inland Steel

ITT Grinnell Canada

John Brown Engineers

Mc Dermott

Mobil North Sea

Nato Airport

Pacific Soap

Perenco Oil

Petrovietnam

S. I. R. (Soc. Ivoirienne Raffinage)

Shell UK

Simpson Paper

Sollac

Spencer Kellogg

Stauffer Chemical

Sulzeer D. P.

VALVITALIA reserves the right to change design, specification and materials without notice

®

15

Tusi Nuclear

U. S. Navy

UCC / Linde

US Steel

Watson Biogas

Weiron Steel

Western Electric

Zaventem Airport

VALVITALIA reserves the right to change design, specification and materials without notice

A Long Experience in Energy Equipment and one Goal:

The Cus tomer ’s sa t i s fac t ion .

VALVITALIA S.p.A.Via Tortona, 69 - 27055 Rivanazzano (PV) Italy

Phone: +39.0383.945911 - Fax: +39.0383.945962E-mail: info@valvitalia.com

Web site: www.valvitalia.com

Rivanazzano (PV) Plant

04.1

0 - 1

000

- DYL

K-BU

T.04