Product - 900D Control Valve

​​​​​900D Control Valve​​​​​​​​​​​​​

IMI CCI’s DRAG® technology, pioneered in 1961, is the industry’s leading solution for handling demanding service conditions. The 900D is designed to deliver peak process performance with superior control while minimizing losses caused by valve leakage. IMI CCI’s proven DRAG® technology will reduce your equipment and maintenance costs through dramatic reductions in cavitation and vibration – the root cause of damage to trim, adjacent equipment and piping. Supported by the world class technical expertise of The Valve Doctor® program, the 900D is a continuation of IMI CCI’s industry leading critical application solutions that customers have come to depend on.​

Key features

Multi-stage DRAG®
  • Eliminates cavitation, noise and vibration
  • Increases life and reduces maintenance costs
Tight shutoff
  • Reduces leakage
  • Available in Class IV, Class V & VI with soft seat
Top entry design
  • Teflon and graphite seals available
Trim characterisation
  • Linear and equal percentage
  • Custom characterisation available to match specific process requirements
Easy maintenance
  • Quick change trim allows for ease of maintenance, no internal components are screwed or welded into valve body or bonnet​​


Control and reliability
The 900D continues IMI CCI’s tradition of customising valve performance to meet the exacting requirements of your application. In addition to linear and equal percentage characterisation, the 900D can be custom characterised for applications that require critical control.

Solves cavitation
  • Maintains the fluid velocity at minimum levels so that local pressures are unlikely to drop below the fluids vapour pressure
  • Should gas bubbles form, DRAG® reduces the energy to a safe level by dividing the flow into many small channels
  • The 900D adheres to ISA guidelines on trim exit velocity
Solves vibration
IMI CCI has extensive experience in helping customers eliminate the damage caused by vibration. Chart 1 shows the dramatic results of applying DRAG® technology and kinetic energy control. Customers typically experience a 90% decrease in peak vibration with the application of DRAG®, and that enables them to:
  • Eliminate valve and piping damage
  • Minimise system trips
  • Minimise downtime and maintenance costs
  • Eliminate additional piping supports
Solves noise
IMI CCI’s philosophy on noise control is to avoid the creation of noise as opposed to trying to muffle it once it’s produced. With the 900D the amount of noise that must be absorbed by the pipe wall or insulation is dramatically reduced, and the noise sensed in the vicinity of the valve is at acceptable levels:
  • DRAG® operates <85 dba
  • Eliminates worker safety concerns
  • Eliminate additional insulation & acoustic barriers
  • Maximize process flow rates


Performance data

Body type​

Valve sizes
1" through 16"

Pressure rating (ANSI class)
150, 300, 600, 900, 1500, 2500 

End connections
Raised Face Flange
RTJ Flange, 
Butt Weld End

Fail mode
Open, Close, In-Place

Face to face
ISA 75.08 - 2002

Flow direction
Flow-To-Closed (Liquids)

Flow-To-Open (Gas)

​Power application

  • HP Heater Emergency Drains
  • Feedwater Regulators
  • Startup Feed Regulators
  • Soot Blowing
  • General Turbine Island BOP
  • Condensate Pump Recirculation
  • Supercritical Startup Valve
  • Deaerator Level Control
  • DA Pegging
  • Auxiliary Steam PCV​
Nuclear application
  • Atmospheric Dump
  • Feedwater Pump Recirculation
  • Auxiliary Steam to Deaerator
  • Blow Down
  • Condensate Drain
  • Deaerator Level Control
  • Feedwater Heater Drains
  • Steam Bypass
  • Condenser Dump (Turbine Bypass)
  • Feedwater Regulator
  • Condensate Pump Recirculation​
-40 to 1100 F(-40 to 593 C)

Shut-off class, ANSI/FCI 70.2
Class IV, V, VI (Soft Seat)

Trim characteristics
Linear / Equal Percentage / Custom Characterisation*

Actuator type
IMI CCI Spring Diaphragm
IMI CCI Double Acting Piston

Stroke time
< 30 sec (standard)/ < 1 sec to open, 
< 5 sec to close (fast stroke)

* Designed specifically to match customers process requirements​​


​Oil & gas
  • Extraction Steam Control
  • Fire Water Pump Recirculation
  • Fire Water Pump Discharge
  • Gas Injection
  • Gas Withdrawal (Clean)
  • Emergency and Service Vents
  • Fuel Gas Regulation Valves
  • Compressor Anti-surge
  • Hot Gas Bypass
  • Process gas to Vent/Flare
  • Expander Bypass (JT Valves)
  • (non-cryogenic)
  • Feedstock Flow/Pressure Control
  • Passivation Valve
  • Feedgas Regulator
  • Lean Amine Pump
  • Recirculation Control
  • Produced Water Injection (Clean)

Latest News

Important Update – COVID-19
18 March 2020
Valve Doctor programme celebrates 20th anniversary
16 September 2019
Unconventional support for the unconventional oil and gas industry
01 July 2019
17 June 2019
IMI CCI showcases choke valve at DUG Rockies conference
04 June 2019
Jackie Hu appointed Divisional Managing Director of IMI Critical Engineering
07 March 2019
Roy Twite to succeed Mark Selway as Chief Executive of IMI plc
05 March 2019
IMI Critical holds Safety Summit
21 September 2018
New HSE handbook to help keep field service engineers safe
10 August 2018
Safety first at IMI Critical
31 July 2018
IMI InterAtiva’s Series RK Valves certified ‘fire-safe’
24 July 2018
IMI CCI participates at regional VPP Safety Summit
08 June 2018
Largest Romanian customer recommends IMI Remosa
10 May 2018
Lean success in IMI Critical back office functions
04 May 2018
Isolation valves adapted for Fluidised Catalytic Cracking applications
30 April 2018
IMI Critical Korea closes in on world-class LEAN performance
27 April 2018
IMI board tours IMI Critical businesses
25 April 2018
New positioner software tools from IMI STI
08 February 2018
Launch of Zero Backlash Scotch Yoke Mechanism
16 January 2018
IMI Critical Korea certified to sell actuators in Europe
20 September 2017
IMI Critical named ‘supplier of the year’ by Korea’s Doosan
19 September 2017
100th Valve Doctor graduates from IMI Critical
13 September 2017
Top HSE certification for IMI Critical’s California site
12 September 2017
Launch of High Endurance Actuator
21 April 2017
Launch of AB6350 valve
06 April 2017
Launch of 100DPC Multi-trim
17 March 2017
Launch of 840GS control valve
22 December 2016
IMI Critical to exhibit new technology at ADIPEC 2016
25 October 2016
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
08 July 2016
IMI Critical Engineering forms strategic partnership with MRC Solberg & Andersen
05 April 2016
IMI Way Day 2016 date announced
01 March 2016
NEW IMI Eye – fourth edition
26 February 2016
IMI Critical co-locates China businesses
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
IMI Truflo Marine Attend the Engineering Technology and Innovation Exhibition 2015
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 - 900D Control Valve