​​​​​​​​​​​​​IMI Orton is an international leader in the manufacture of triple offset metal-seated valves, large diameter double-eccentric butterfly valves and concentric rubber-lined valves, for on-off and control service. We have over 50 years experience of designing customised valve solutions for our customers, combining efficiency and reliability with the highest safety standards for use in extreme operating environments. ​

Critical applications

  • Oil & Gas
    Our valves have proved their long-term performance and reliability in both on- and off-shore facilities where tight shut-off isolation and modulating features are essential.  We are proud that our products and specialists have become real partners to our customers operating in harsh environments and critical service.

  • LNG liquefaction plants & terminals
    IMI Orton valves are in use in LNG (liquefied natural gas) Liquefaction plants and regasification terminals worldwide. Customers select us for the wid​e range of technical solutions we can offer, and for our state-of-the-art testing facility, which means that every valve is fully tested before it is supplied. 

  • Petrochemical industries
    With a very wide range of valves ranging from 2” to 120”, IMI Orton valves are widely installed in petrochemical plants around the world. PTA plants with process licensed manufacturers have approved IMI Orton products, and regularly install IMI Orton valves to guarantee top performance and easy maintenance. 

  • Desalination plantsOur valves help customers operate desalination plants efficiently and reliably. Our valves protect the pumps in the desalination process area, and the perfect sealing and modulating capability of our valves is now widely recognised by plant operators. We also offer customers an ongoing maint​enance programme, to ensure trouble-free performance for years to come.

Key technologies​

  • Triple eccentric design prevents wear and leaks, increasing service life
    IMI Orton’s unique triple eccentric design eliminates friction between the disc seal ring and the seat in the body, preventing wear and tear and leakage. MV-series valve discs include a laminated metal seal ring, composed of alternating layers of corrosion-resistant alloy and composite graphite. Each lamination provides an independent seal, improving long-term sealing while also allowing lower operating torques. For high temperatures and more severe applications a hardened, non-laminated seal ring is available. 

  • State of the art testing facility 
    Our in-house testing facility allows us to test the capabilities of valves up to 120” in size. We can pressure test to ASME Class 2500, and temperature test from cryogenic to high temperatures (-196°C to +700°C).

IMI ORTON - Model 231 requirements​

In order to render the organization, management and corporate control system compliant with the Legislative Decree, June 8, 2001, n. 231, the company adopted by resolution of the Board of Directors on April 26, 2005, the organization and management model required by Legislative Decree, June 8, 2001, n. 231 (hereafter, the "Model 231") and appointed a Supervisory Board with the task of monitoring the proper implementation of the Model 231.
The Model 231 has been updated over time (lastly, on December 19, 2014) and integrated to reflect the subsequent adoption of legislation, which has expanded the category of crimes covered under the umbrella of the  administrative responsibility pursuant to Legislative Decree, June 8, 2001 n. 231.
The contents of the Model 231 are consistent with the provisions contained in the guidelines adopted by industry associations and the Model 231 represents a further step towards strictness, transparency and sense of responsibility in internal relations and relations with the outside world, while offering shareholders the best guarantees of efficiency and compliance to the law.
The chairman of the Supervisory Board is Mr. Ermelindo Lungaro.
Any violation to the regulations and to the compliance of the Model 231 must be reported to the Supervisory Board.
Reports may be submitted in the following manner:
Writing to:
Orton S.r.l.
Supervisory Board
Att. Mr Ermelindo Lungaro
Via Stendhal, 65
20144 - Milan (Italy)

Data Privacy​

ORTON S.r.l. (IMI ORTON) is aware of the importance covered by the Protection of Personal Data and undertakes to  respect  the  rules  of  conduct  set  up  by  the  Legislative  Decree,  30  June  2003,  n.  196  (Code regarding the Protection of Personal Data), which are to guarantee navigation in a secure network, through Personal Data Protection.  
Attached please find the Privacy Disclaimer under Article 13 of the Italian Legislative Decree, 30 June 2003, n. 196. ​

IMI ORTON - Modello 231

Al fine di adeguare il sistema di organizzazione, gestione e controllo societario al decreto legislativo n. 231/2001, la società ha adottato con delibera del Consiglio di amministrazione in data 26 Aprile 2005 il Modello di organizzazione e di gestione previsto dal Decreto Legislativo, 8 giugno 2001, n. 231 (di seguito, “Modello 231”) e ha nominato un organismo di vigilanza con il compito di verificare la corretta osservanza del Modello 231.
Detto Modello 231 è stato nel corso del tempo aggiornato (da ultimo, il 19 dicembre 2014) ed integrato in relazione agli interventi legislativi succedutisi negli anni, che hanno ampliato la categoria dei reati presupposto della responsabilità amministrativa ex Decreto legislativo, 8 giugno 2001 n. 231.
Lo stesso è coerente nei contenuti con quanto disposto dalle linee guida elaborate in materia da associazioni di categoria e rappresenta un ulteriore passo verso il rigore, la trasparenza e il senso di responsabilità nei rapporti interni e con il mondo esterno, offrendo al contempo agli azionisti le migliori garanzie di una gestione efficiente e corretta.
Il presidente dell’organismo di vigilanza è il signor Ermelindo Lungaro.
Ogni violazione delle norme del Modello 231 deve essere riferito al organismo di vigilanza.
Le segnalazioni possono essere presentate nel modo seguente:
Scrivendo a:
Orton S.r.l.
Organismo di vigilanza
Att. Sig. Ermelindo Lungaro
Via Stendhal, 65
20144 - Milano

Protezione dei dati personali

ORTON S.r.l. (IMI ORTON) è consapevole dell’importanza della tutela dei dati personali e si impegna a rispettare le regole di condotta sancite dal decreto legislativo, 30 giugno 2003, n. 196 (Codice in materia di protezione dei dati personali) dirette a garantire una navigazione in rete sicura attraverso la tutela dei dati personali.
In allegato l’Informativa Privacy ai sensi dell’art. 13 del decreto legislativo, 30 giugno 2003, n. 196.

Latest News

Half a century for Keith at IMI Truflo Marine
06 October 2020
IMI Critical Engineering digital FAT delivers customer projects on time
07 September 2020
Another big aftermarket win in LATAM for IMI Critical Engineering
18 August 2020
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

Fast Facts

Founded: 1963
Joined IMI: 2006
Employees: 230
Installed base:​ 170,000
Certifications: ISO 15848-1
UL 1091
ISO 9001: 2008
ISO 29001
ISO 14001
OHSAS 18001
Locations: Italy, US, China (all manufacturing takes place in Italy)​​



Global sales:


IMI Orton