Configuration

Piston type:

• Check valve, optional with screw down function
• DN 10-200, PN up to 500

Swing type:

Construction with realized or inside shaft plus pressure sealing bonnet or blank flange.

• DN 50-800, PN up to 40
• DN 50-250, PN 63-160
• DN 50-600, PN 210-630 (PD 21-63)

Materials

• Carbon steel: 1.0460, 1.0619, 1.5415, 1.5419
• Alloy steel: 1.4901, 1.4903, 1.7335, 1.7357, 1.7383
• Cold resisting steel: 1.0566, 1.7219,
• Stainless steel: 1.4571, 1.4581
• Stainless steel low temperature: 1.4308, 1.4571

Connections

• Flanges
• Butt weld ends
• Socket weld ends
• Other connections

Features

• Valve body made of forged steel
• Check valve, optional with screw down function
• Swing check valve with an internal hinge pin
• Lever rests in a separate support ring
• Available with damper

Design highlights

• Valve body forged
  Free from porosity and shrink holes
• Seats faced with stellite
  Extremely resistant to wear
• Lever rests in a separate support ring
  The setting of the disc can be examined before installing the bonnet cover
• Pressure sealed bonnet
  Best possible sealing function

Manufacturer

PERSTA is a market leader in the high performance, forged steel isolating valves. Established manufacturer, part of the Siepmann Group with their own forging shop. Especially the high pressure globe and gate valves are a benchmark in the valve industry with a flexible production process.

• Globe valves
• Gate valves
• Check valves
• Bellow seal valves
• Special valves
• Valves for super critical boilers

ZWICK's self-centrering disc design that is keyed to the shaft accommodates differential thermal expansions of the disc and the shaft. The triple offset geometry assures friction free running without radial loading of the seal ring and break-away torque. The TRI-CON series reaches a superior unrivaled life time cycle. For critical services a patented sealed bearing solution is offered to prevent fouling of the bearing associated with line media.

Configurations

• TRI-CON
• TRI-CHECK
• TRI-BLOCK

Standard Features

• Triple eccentric design
• Metal seating
• Pressure classes according ANSI 150/300/600/900 and PN 10/16/25/40/63/100/160
• Full bi-directional shutoff as per API 598 and/or DIN EN 12266-1
• Temperature range up to 815°C
• Size range 2" - 88" (DN 50-2200)
• Friction free opening and closing
• Vacuum tight
• Laminated seal and seat made of stainless steel
• Anti blow-out shaft API 609
• Steel casting, stainless steel, special alloys
• Fire-safe acc. to BS 6755 and API 607 4th ed. for both flow directions
• Fugitive emission control acc. to "TA-Luft II"
• Optional Double Block & Bleed Design
• Special customer requirements on request
• SIL 3
• EPA 21

Benefits

Self-centering disc
The construction guarantees the optimal position of the laminated seal against the seat. Jamming due to thermal expansion is eliminated.

Torque transmission using keys
The disc is keyed to the shaft not pinned, providing balanced torque transmission and eliminating the danger of pins shearing off.

Ideal lamination and disc design
The strong disc with its eliptical supporting surface offers the best fixing of the lamination. Bubble tightness is given as a result of the special machining of the lamination.

Supporting bearing bushings
The optimal position of the bearing reduces the risk of the shaft bending. This guarantees bi-directional tightness at maximum differental pressure.

Applications

• Oil and gas
• Chemical
• Petrochemical
• Energy
• Offshore
• Steel

Manufacturer

ZWICK is a German manufacturer of high performance triple offset butterfly valves. ZWICK is excellent in short delivery times because of a flexible and effective organisation. ZWICK successfully passed the Shell TAMAP procedure and achieved the very low allowable Fugitive Emission leakage rates.

• Metal seated (SS/graphite & solid metal) Butterfly valves (wafer/lug type, double flanged, welded ends)
• Patented inclusion free bearings
• (Quick closing) Check valves
• Double Block & Bleed valves

Project: Cygnus Development Project - GDF SUEZ E&P UK ltd

Contractor: Saipem Limited

Advanced Valve Solutions Delivery:

• Perrin subsea ROV operated ball valves
• Deepstar Hotstabs

One of the largest undeveloped gas finds in the Southern North Sea is the Cygnus field, located within UKCS Blocks 44/12a and 44/11a.

The field comprises both Leman and Carboniferous reservoirs with up to five potential productive fault blocks. GDF Suez, which holds a 38.75% interest, operates Cygnus; Centrica holds 48.75%; and Endeavour holds the remaining 12.5%.

Saipem Ltd was responsible for installation of the 50 km long 24” export pipeline, 7.3 km long 12” production pipeline and infield control and SSIV umbilicals.

Advanced Valve Solutions advised and supplied all compontents (valves and hotstabs) related to the Pig Lauchers and Receivers for this project. 

Advanced Valve Solutions (AVS) recently finished a couple of large projects where AVS supplied all valves and hot stabs for Temporary Subsea Pig Launch and Receive Stations for Pipe laying services. In total AVS supplied about 80 Temporary 4” 2500# Trunnion Mounted Subsea Ball Valves, 120 2” floating Ball valves and several 1” ball valves and check valves in various sizes. The reason to select Trunnion Mounted Subsea Ball valves is based on the experience of many operators that on the floating valve design, after a period of non operation there is a chance of an uncontrolled increase of the torque. This increase of torque makes the operation of the valve difficult for the ROV. The orders were completed with the supply of several new developed Special Hydraulic 4” Stab connector systems. This system is a solution for all the time consuming operation of larger size hot stabs, especially in Deep waters like 2500m and more. The actual 4” hot stab is operated by a small API 6A dual port hot stab which is operated by the ROV. The hydraulic pressure available from the ROV operates the 4” Hot Stab in a smooth, reliable way.

Details are available upon request.

Brand: Cortec

The Piper Hot Stabs are available as Single Entry or Double Entry and both with Single or double outlet connection. Even after assembly in the Pig Launcher (Receiver or any other Subsea Head) and pressure test, it is easy to revise the single entry into double entry without disassembling the receptacle. This is the advantage of the flexible design!

Key Features

• Compact design provides substantial space and weight savings.
• Wide variety of ROV operators and actuators available.
• ROV-friendly, low-operating torques.
• Wide variety of material and end-connection options to meet design criteria.

Applications

• MPD systems including flow spools and bleed and equalization lines
• BOP Panels
• Riser adapter valves

Services

• Engineering
• Manufacturing
• Assembly and test

Key Features

• Series PB ball and check valve size range: 1″ thru 12″ ANSI 1500, API 5000, ANSI 2500. 1″ thru 8″ API 10000. 1″ and 2″ API 15000.
• Compact design provides substantial space and weight savings versus traditional flanged end ball valves.
• Optimum flow technology matches or closely matches the valve thru bore to common mating pipe inside diameters, eliminating transition areas and erosion points.
• Product line includes ball valves, check valves, double ball valves, throttle ball valves, three-way ball valves and ball check combination valves.
• Valves specifically designed for use in unprocessed produced fluid applications.

Applications

• Offshore production and test manifolds
• Offshore chemical injection packages
• Onshore location well hook-ups
• Onshore production and separation units

Services

• Engineering
• Manufacturing
• Assembly and test

CORTEC manufactures a complete line of production chokes including high performance cage and sleeve and needle and seat designs. These chokes can be converted to a positive choke. CORTEC also offers rotary disc chokes and related trim and replacement parts.

Configuration

• Positive Bean Configuration
• Needle and Seat Configuration
• Cage Trim Configuration
• Multi-stage Trim Configuration

Features

• Positive Bean Configuration
• Needle and Seat Configuration
• Cage Trim Configuration
• Multi-stage Trim Configuration

Quality assurance

• API Specification Q1
• ISO 9001
• Built to meet or exceed API 6A specifications
• Customer Specified Preferences

Perrin GmbH manufactures ball valves for use in nearly every professional environment and for customers all over the world. This well respected German manufacturer, supplies mainly special type of ball valves for Petrochemical, Chemical, Oil & Gas, Power Plants, Cement, Steel mills and liquid gases (e.g. LNG) applications.

Standard Features

Temperature range:
-196 °C to + 800 °C
-320 °F to + 1470 °F

Size range:
DN 1/2" to DN 24"

Medium:
Fluids, Gas, Solids (inc. corrosive/abrasive mediums)

Pressure range:
ANSI Class 150 to
Class 2500

Materials

• Carbon steel
• Stainless steel
• Titanium
• Hastelloy
• Duplex
• Inconel & Monel
• Special materials

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