Product - Isolation Valve

​​​​​​​​​​Wedge-within-Wedge Type Gate Valve

IMI Z&J introduced the wedge-within-wedge gate valve to the market and we have more​​ than 60 years of experience. lts design is most suitable for extreme operating conditions of high temperature, high pressure, line stresses and high frequency of operation.


Key features
  • Double disc design available as:
    • double block and purge 
    • double block and bleed​
  • Metal to metal seating
  • Rising stem (O&Y type)
  • Round, oval or flat valve designs available
  • With flanges or butt-weld ends

Benefits

  • No jamming of the discs, even under the most stringent operating conditions
  • During actuation of the wedges the discs collapse and are free to be moved
  • Tightness and flexibility are achieved by the discs being pressed via a central ball between the internal wedges
  • Minimum wear due to very short travel contacts on the sealing seats
  • Under low differential pressure seat surfaces free of wear due to axial pressing in closed position 
  • Available with electric, hydraulic or pneumatic actuator 

Applications

  • Dehydrogenation / Olefin Conversion plants 
  • Isosiv / TIP-units
  • Cyclic Powerformer units
  • Reactor Isolation​

Product details

  • Engineering and materials according to operating conditions and licensors specifications
  • Rating up to 600 Ibs
  • Operating temperature up to 1900 °F (1050 °C) 
  • Sizes up to nominal diameter 120 inch
  • In accordance with German, ANSI or other standards
Hydraulic system
  • According to specification and optimized for reactor sequence
  • Redundant main pump & circulation circuit
  • Optimized fluid conditioning (Ievel, temperature, monitoring)
  • Piston accumulator station with additional nitrogen bottles
  • Control panel for each reactor valve
  • Automatic control via solenoid valves (manual override optional)
  • Pneumatic driven emergency portable cart​


IMI Z&J have been producing valves for over 100 years

Can be designed as a round, oval or flat type valve

Hydraulic Power Units are used to actuate Isolation Valves in many processes
A hydraulic control unit used to actuate Isolation Valves in dehydrogenation processes




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100th Valve Doctor graduates from IMI Critical
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Top HSE certification for IMI Critical’s California site
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IMI Critical to exhibit new technology at ADIPEC 2016
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New graduates join IMI Critical in four countries
22 September 2016
IMI Critical to take stand at ONS 2016 in Norway
16 August 2016
IMI Critical opens new China plant in Qingpu
27 July 2016
IMI CCI Korea celebrates 2,000 days of no “Lost Time Accident”
25 July 2016
Visit to IMI Z&J Germany by the Russian Economic Bureau from Bonn
11 July 2016
IMI Z&J Düren moves into modern offices
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01 March 2016
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20 January 2016
IMI CCI Switzerland gains certification for new generation safety valves
18 December 2015
IMI Critical rise to Dragon challenge
30 November 2015
IMI STI achieves CRCC approval for new products
24 November 2015
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23 November 2015
IMI CCI Sweden secures new contracts on three continents
23 November 2015
IMI Critical Engineering appoints new petrochemicals head
05 November 2015
IMI CCI Czech Republic gains ‘Safe Enterprise’ certification
03 November 2015
IMI Critical announces 90mRMB investment in China
29 October 2015
IMI CCI SriCity wins regional safety award
27 October 2015
Key clients attend grand opening of new Aberdeen facility
23 October 2015
IMI companies ‘act as one’ to deliver for customer
02 October 2015
IMI CCI Sri City approved by NTPC
01 October 2015
IMI Critical Engineering showcases innovation at Valve World Expo Asia
28 September 2015
Nexen awards IMI Orton
25 September 2015
IMI Critical Engineering celebrates opening of new Jubail repair centre
23 September 2015
IMI Critical and IMI Precision join forces at Valve World Expo + Conference Asia 2015
21 September 2015
IMI Critical Engineering opening of new Jubail Repair Centre
18 September 2015
IMI CCI India manufactures first 1050MW turbine bypass valve
20 May 2015
Largest ever contract for IMI Critical Engineering
18 February 2015
New Houston facility opens
12 February 2015
IMI Critical completes acquisition of Bopp + Reuther
02 January 2015
IMI Critical takes family of brands to Valve World 2014
11 December 2014
IMI STI doubles size of Italian plant
20 October 2014

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Product - Isolation Valve