Technical information

C M Y CM MY CY CMY K

API - American Petroleum InstituteSpec. 6A Specification for wellhead and christmas tree equipment.

Spec. 6D Specification fot pipeline valves.

Spec. RP6F Recommended practice for fire testing of valves.

Spec. 6FA Specification for firetesting of valves.

Std. 598 Valve inspection and test.

Std. 605 Large diameter carbon steel flanges.

Std. 607 Fire test for soft seated quarter-turn valves.

ANSI - American National Standard Institute

ASME - American Society of Mechanical EngineersB16.11 Forged steel fitting socket-welding and threaded.

B16.5 Steel pipe flanges and flanged fittings.

B16.10 Face-to-face and end to end dimensions of ferrous valves.

B16.25 Butt welding ends.

B16.34 Steel valves - Flanged and butt welding ends.

B16.47 Large diameter steel flanges (NPS 26 through NPS 60)

B31.3 Chemical plant and petroleum refinery piping system.

B31.4 Liquid petroleum transportation piping systems.

B31.8 Gas transmission and distribution piping systems.

ASTM - American Society for Testing Materials01.01 Steel piping, tubing and fittings.

01.02 Ferrous casting; Ferro alloys.

02.01 Copper and Copper alloys.

02.04 Nichel and Nichel alloys.

03.01 Metals - Mechanical testing;

Elevated & low temperature test;

Metallography.

03.03 Nondestructive testing.

ISO - International Organization for StandardizationISO 9001 Quality systems - Model for quality assurance in design/development, production, installation and servicing.

BRITISH STANDARDBS 1560 Steel pipe flanges and flanged fittings.

BS 2080 Face-to-face, centre-to-face, end-to-end, and centre-to-end dimension of flanged and butt-welding end steel valves for the

petroleum, petrochemical and allied industries.

BS 4504 Flanges and bolthings for pipes valves and fittings.

BS 5146 Inspection and test of steel valves for the petroleum, petrochemical and allied industries.

BS 5351 Steel ball valves for the petroleum, petrochemical and allied industries.

BS 6755 Testing of valves.

MSS - Manufactures Standardization SocietySP 6 Standard finishes for contact faces of pipe flanges and connecting - end flanges of valves and fittings.

SP 25 Standard marking system for valves fittings, flanges and unions.

SP 44 Steel pipeline flanges.

SP 55 Quality standard for steel castings - visual method.

SP 61 Hydrostatic testing of steel velves.

SP 72 Ball valves with flanged or butt - welding ends for general service.

NACE - National Association of Corrosion EngineersMR-01-75 Sulfide stress cracking resistant metallic materials for oil field equipment.

ZAVERO reserves to itself the right to make all necessary changes on its products, without notice

ZA.VE.RO. INDUSTRIAL VALVES

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CONSTRUCTION STANDARDS11

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On request: A453 Gr.660, Monel K500Treatment like HDG, Zinc Plating, PTFE coating can be done on request.

ZAVERO reserves to itself the right to make all necessary changes on its products, without notice

ZA.VE.RO. INDUSTRIAL VALVES

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CS

ASTM UNS OTHER DESIGNATION APPLICATIONS

AISI 4140 G41400A694 F52A694 F60 API 6A 60KA694 F65A350 LF2 K03011 -46°CA350 LF3 K32025 -101°C

A182 F304 S30400A182 F316 S31600

A182 F316L S31603A182 F316Ti S31635A182 F321 S32100A182 F347 S34700

A182 F44 (SUPERAUSTENITIC) S31254 6% Mo CLORIDE SERVICEA182 FX-M19 S20910 NITRONIC 50

A F6A S41000 AISI 410 - 13% CrA182 F6NM S41500 AISI 415 -70°C

S17400 17-4 PHA182 F51 S31803 SAF 2205 MARINE ENVIRONEMENTA182 F60 MARINE ENVIRONEMENT

A182 F53 (SUPERDUPLEX) S32750 SAF 2507 SUBSEAA182 F55 (SUPERDUPLEX) S32760 SUBSEA

B446 N06625 INCONEL 625N08825 INCOLOY 825

B637 N07718 INCONEL 718B164 N04400 MONEL 400 ALCHYLATION

N05500 MONEL K500 ALCHYLATIONN06022 HASTELLOY-C22 HYPOCLORITE SERVICEN10276 ALLOY C276

B348 TITANIUMB148 C95500 BRONZEB148 C95800 BRONZEB151 C70600 BRONZEB62 BRONZE

CA

RB

ON

STE

ELS

TAIN

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SS

ST

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LTCS

AUSTENITICSS

MARTENSITICSS

DSS(DUPLEX)

SPECIALALLOY

OTHERMATERIALS

LOW TEMPERATURE

SOUR SERVICE

CRYO (-196°C) & LT

HIGH TEMPERATURE

SOUR SERVICE

HIGH PRESSURE

H2S (>5%)VERY SOUR SERVICE

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BOLTING MATERIAL33

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MATERIAL of COSTRUCTION22

BODY MATERIAL OTHER AVAILABLESTD BOLTING

SS B8/8

CS B7/2H B7M/2HMLTCS L7/4 L7M/7M

B8M/8M B8M/8M Cl.2

UNS S31803DSS B7/2H HDG UNS S32750

UNS S32760

C M Y CM MY CY CMY K

ZAVERO reserves to itself the right to make all necessary changes on its products, without notice

ZA.VE.RO. INDUSTRIAL VALVES

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All valves have secondary graphite seal.On request or in case of special applications other kind of seals are also available (Garlock packing, lip-seal, PTFE ring, Chevronpacking)

DESIGNATION SPECIAL APPLICATIONDESCRIPTION

RPTFE filled with glass or carbongraphiteDEVLON (NYLON)

PEEK Hi-Temp (up to 230°C) Hi-PressurePCTFE Cryogenic service

VESPEL Very Hi-Temp (above 300°C)DELRIN

STA

ND

ARD

AVA

ILA

BLE

DESIGNATION SPECIAL APPLICATIONDESCRIPTION

FKM 90FKM 90 - AED Anti Explosive Decompression

HNBR MethanolHNBR - AED Anti Explosive Decompression Methanol

KALREZ (FFKM) Hi-Temp. (up to 327°C)ELAST-O-LION 101 (HNBR) MethanolELAST-O-LION 985 (HNBR) Low Temp. (up to -46°C)

GLTENDURA

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MATERIAL of SEAL55

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MATERIAL of SEAT44

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Raised FaceSealing on RF flanges is by flat non-metallicgaskets fitted within the bolts of the flanges.Surface finish is controlled depending on thetype of gaskets being used.

RF

RJ

BW

PE

SW

NPT (M)

NPT (F)

SHAPE APPLICATIONDESCRIPTIONTYPE

Others available: BSP (ISO 228/1 e ISO 7/1), FLAT FACE, LARGE FEMALE, LARGE GROOVE, COMPACT FLANGE, SAE.

Ring JointRing type metal gaskets must be used on thistype of flange facing.

This coupling requires bolting, clamps and sealring. As different designs are produced bydifferent manufacturers we always require tothe customer to supply the HUB machiningdrawing.

Butt WeldingThis construction offers the highest verifiableintegrity of welding as BW connections are easyto radiograph. Different schedules can besupplied.

Plain EndsThis kind of welding end match to the SW end.

Socket WeldingThis kind of welding end match to the PE end.

Threaded joints as per American National TaperPipe Thread.

Typically used for low pressure (class 150-300-600)

Typically used for high pressure (class 900-1500-2500-API 6A)

Typically used for high pressure (class 900-1500-2500-API 6A)

BW ends are generally used when the possibilityof fluid leakage must be eliminated.

Typically used for applications where noextremely hazardous fluids neither fluids withtendency for crevice corrosion are present.

Typically used on commodity valves.

TH

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ENDS66

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Locking facilities are available for all our valves, both gear and lever operated.

Locking device, to use both in open and in close position is suitable to receive padlock.

When non-metal parts are destroyed in a fire, the upstream medium pressure push the ball into the downstream metal seat lip and the stem

to the body preventing leakage due to a secondary metal-to-metal seals.

For all static seals and on the stem for trunnion execution the fire safe is provided by a secondary graphite sealing.

Anti static gasket grants conductivity between

body and stem.

Anti static ball with spring grants conductivity

between body and stem.

Antistatic device between ball and stem is a direct

metal contact. On request, ball with spring option

can also be done between ball and stem both

for floating and for trunnion valves.

FLOATING TYPE TRUNNION TYPE

OPEN POSITION

FLOATING TYPE TRUNNION TYPE

CLOSE POSITION

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LOCKING DEVICE77

info88 FIRE SAFE – Designed in accordance with API 607

info99 ANTI STATIC DEVICE

C M Y CM MY CY CMY K

Soft seated valves are provided with a metal seat ring which is sealing

against the ball by means of a resilient insert and against the body by

a seat gasket.

In the standard design each ring performs the

Single Piston Effect.

The pressure acting on the external side of the

seat ring creates the Piston Effect, which results

in a force pushing the seat against the ball. The

pressure acting on the internal side of the seat

rings pushes them equally away from the ball.

Therefore the seats are Self Relieving, allowing

any excess pressure acting in the body cavity to

be discharged in the line as soon as the force

caused by the pressure overcomes the one

provided by the springs.

On request, the seat ring design may be modified

to perform the Double Piston Effect action.

In this case the pressure acting on both the

external and the internal side of the seat rings

results in a force pushing them equally against

the ball. Therefore each seat ring allows for the

required tightness even if the pressure is applied

in the body cavity.

This feature adds an extra sealing to the valve

but, to release the possible excess pressure

developed in the body cavity, it is necessary to

use an external safety relief valve.

Soft seat Metal seat

Metal seated valves are recommended for abrasive service and for the

higher operating temperatures.

Ball and seat rings contact surfaces are with tungsten or chrome carbide

coating.

ZAVERO reserves to itself the right to make all necessary changes on its products, without notice

ZA.VE.RO. INDUSTRIAL VALVES

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info1010 SEAT DESIGN

info1111 SINGLE PISTON EFFECT (SELF RELIEVING) – uni-directional seat

DOUBLE PISTON EFFECT – bi-directional seat

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Phone +39 0163 41 13 37 Fax +39 0163 41 13 22info@zavero.com - manager contact: roberto.castiglioni@zavero.com

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