Avarus Valves


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Air valves – Air Vent, Vacuum & Release for Seawater Duty

Producing air valves for the global oil and gas, petrochemical, marine and water utilities industries, Avarus Valves is committed to providing all of your air valve requirements.

Unit 3,
Bretfield Court,
WF12 9BG,
West Yorkshire,
United Kingdom
Fax Number

Producing air valves for the global oil and gas, petrochemical, marine and water utility industries, Avarus Valves is committed to providing all of your air valve requirements.

Manufactured in the UK, we make air valves in various materials that give excellent protection in the severe environments associated with offshore applications, seawater service or indeed any other arduous environments. These materials include super duplex, titanium, duplex, stainless-steels, aluminium bronze, gunmetal, Hastelloy®, Monel®, Inconel® and various other nickel alloys.

As with many modern-day projects, specific material testing and documentation are a vital part of a contract. Our air valves can be offered with a wide range of detailed material testing to meet each project requirement. We normally use UK foundries or UK/EU certified materials that are Norsok M-650 / TR2000 approved.

Regardless of material and quantity, Avarus Valves endeavours to find suitable solutions for specific demands or special circumstances. We can manufacture our air valves on short delivery times if needed.

0.5in model PAV10 small orifice air release valve in 6Mo UNS S31254
2in PAV20 air valve in super duplex with butterfly valve and flange adaptor.
2in model PAVB20 bi-function air valve in super duplex.
2in PAV20 air valve in aluminium bronze.
4in model PAV20VB vacuum breaker in titanium.
50mm PAV20 Duplex with insect screen and NORSOK-approved paint.
Titanium model PAVB20 bi-function air valves with vented non-return device
Titanium model PAV20 bi-function air valve with surge arrestor
Aluminium bronze model PAVB30 tri-function air valve
Super Duplex model PAV20 bi-function air valve with dual acting throttle device

We are also ISO9001: 2015 and ISO14001: 2015 UKAS accredited and Achilles approved.

Air valve functions

We produce air valves with various functions, such as air release (small orifice); air vent and vacuum (bi-function); air release, vent and vacuum (tri-function); and can custom-build to fine detail with options such as a variable throttle device to give adjustable venting control, inflow and outflow check device for one way air flow and flanged outlet for piping away facility.

Butterfly, ball, check valves and strainers

With experience in successfully supplying to multi-national companies, our innovative character and expertise enables us to also supply associated valves, such as exotic material gate, butterfly, ball, check valves and strainers. These can be used for isolation of the air valves or individual use.

Centrally located in the UK, we offer a professional and dependable service that is supported by ISO9001: 2008 UKAS and ISO1400: 2004 quality assurance accreditation.

Bespoke flange kits

We can also supply flange kits to suit most requirements. Fasteners can be supplied in many exotic materials that offer excellent corrosion resistance in sea water and other arduous environments, and if required, extensive material testing and certification can also be supplied to individual project or client requirements. As the fasteners are bespoke made they can be supplied as bolts, setscrews or studs to any length preferred to suit your requirements.

In conjunction with the above fasteners, we can supply gaskets. These include full face, ring, spiral wound, ring type joint which are available in various materials, pressure & temperature ratings. This enables us to supply a complete flange kit which can be fully certified to suit your requirements. A fast-track service can be offered for urgent deliveries.

White Papers


  • Barossa Project, Australia

    Barossa gas field, located off the coast Timor Sea, Australia, is expected to start production in the first half of 2025.

  • Solan Oil Field, North Sea, UK

    Solan oil field lies in block 205/26A of production licence P164 located in the UK North Sea, west of the Shetland Islands, in 135m-deep waters.

  • Martin Linge Field, North Sea, Norway

    The Martin Linge Field, previously known as Hild, is an oil and gas field under development on the Norwegian continental shelf in the North Sea. It is being developed by a partnership between Equinor (70%) and Petoro (30%).

  • Tyra Gas Field Redevelopment

    Located in the Danish North Sea, Tyra gas field is being redeveloped with an investment of kr22.3bn ($3.36bn) in order to extend its operational life by at least 25 years.

  • Goliat Oil and Gas Field, Barents Sea

    The Goliat oil and gas field, located in the production licence (PL) 229 in the Barents Sea, north of Russia and Norway, is the first oil reservoir to start production in the area.

  • Azeri Central East Project

    The Azeri Central East (ACE) project is the new phase of development in the Azeri, Chirag and Deepwater Gunashli (ACG) contract area in Azerbaijan.

  • Valhall Flank West, North Sea

    The Valhall Flank West project will develop the western flank of the Valhall oilfield, located south of the Norwegian sector of the North Sea.

  • Hebron Oil Project, Newfoundland

    Hebron is a heavy oil field located 350km south-east of the Newfoundland and Labrador capital St John’s, in the Jeanne d’Arc Basin, Canada, in a water depth of 93m.

  • Moho Nord Subsea Project

    The $10bn Moho Nord subsea project is located around 75km off the coast of Pointe Noire in the Republic of Congo.

  • Njord Future Project, Norwegian Sea

    Njord is an offshore oil and gas field located in blocks 6407/7 and 6407/10 in the Norwegian Sea. Lying 30km west of the Draugen field, Njord is located in water depths of 330m and started production in 1997 via the Njord A floating production facility.

  • Knarr Field, North Sea

    Knarr (formerly Jordbaer) oil and gas field is located in production licence 373S of block 34/3 in the Norwegian North Sea.

  • Johan Sverdrup Field, North Sea

    Johan Sverdrup offshore development is located approximately 150km away from the coast of Stavanger, Norway, in the Norwegian North Sea.

  • Wheatstone Project, Carnarvon Basin

    The Wheatstone Project is a gas to LNG project that involves the development of the Wheatstone and Iago fields located offshore Western Australia in the Northern Carnarvon Basin.

  • North Sea Northern-Luno Field

    The Edvard Grieg field (formerly Luno), is located in production licence PL 338, in the Utsira High area of the Norwegian North Sea.

  • Manora Oil Field

    Manora oil field is located in the G1/48 concession of the Gulf of Thailand. It lies in 44m of water approximately 80km from the coast of Thailand.

  • Shah Deniz Stage Two, Caspian Sea

    Shah Deniz Stage Two, also known as the Shah Deniz full field development, is one of the world's biggest gas projects and will increase the gas production capacity of the Shah Deniz field by an additional 16 billion cubic metres per annum (bcma) and condensate capacity by a further 120,000 barrels a day.

  • Jasmine Gas Field Project, North Sea, United Kingdom

    The Jasmine field is situated in blocks 30/6 and 30/7a of the central North Sea. The gas and condensate field lies at a water depth of 266ft and is considered to be the UK's largest discovery since the mid-1990s.

  • Ekofisk II

    The original Ekofisk area development consisted of eight oil and gas fields, namely Cod, Ekofisk, West Ekofisk, Tor, Albuskjell, Eldfisk, Edda and Embla.

  • Su Tu Trang Gas Field, Cuu Long Basin

    Su Tu Trang gas field is in Block 15-1 of the Cuu Long Basin off the southern coast of Vietnam. The offshore gas field lies south-east of the Ba Ria-Vung Tau province at a water depth of 50m.

  • Clair Field, Shetlands

    When it was discovered in 1977, the Clair field was the largest discovered but undeveloped hydrocarbon resource on the U

  • Jotun Oil and Gas Field Project

    The Jotun field is located on the Utsira High, between the Balder and Heimdal fields, approximately 200km west of Stavanger, Norway.

Avarus Valves Ltd
Unit 3
Bretfield Court
WF12 9BG
West Yorkshire
United Kingdom

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