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Standard Valve Range

For multiple applications the Hobbs Valve TOV (triple offset butterfly valve) is a zero-leakage solution that is versatile enough in service to be able to outperform any other butterfly valve in its class, uni/bi-directionally, where full bore is not a pre-requisite but ultimate performance is a must. Hobbs’ product range represents a range that is extremely easy to maintain and the associated change out-times for spare part replacements are by far the quickest in the market.

This manifests as next to no down time and, in turn, drastic cost savings – the cost of ownership of the Hobbs Valve TOV range is significantly less than competitors’. For the entire range Hobbs Valve has true circularity of the disc/seat and has had this integral to its design since 2005. Hobbs Valve feel it would be misleading to call this circularity a ‘4th Offset’.

Tomorrows Valve Today

Hobbs Valve has redesigned the basic unchanged Triple Offset Butterfly valve and incorporated new performance enhancing operational features, allowing for a more simplified manufacturing process. The result is our exclusive patented range of superior performance zero leakage bi-directional triple offset butterfly valves, suitable for extreme pressure/temperature applications.

The TVT range (Tomorrow’s Valve Today) consists of 2″-48″ 150, 300 & 600 lb pressure class ratings along with -196ºC (cryogenic) and double block & bleed butterfly valves. All of which are manufactured in a wide range of materials from high specification metals including carbon and stainless steels, through to the high tensile or corrosion resistant aluminium bronze, 6 moly, titanium, duplex and super duplex.

See how quickly a Hobbs valve can be stripped for maintenance:


Pressure Classes & Sizes

  • Class 150 – 2” to 48”
  • Class 300 – 2” to 48”
  • Class 600 – 4” to 24”
  • Class 900 – 4” to 24” (Available on request)


  • Standard Carbon Steels (A216) –WCB, WCC
  • Low Temp Carbon Steel (A352) –LCB, LCC
  • Standard Steels (A351) – CF8M, CF8, CK3MCuN(6Mo)
  • High Temp Steels (A217) – WC6, WC9
  • Duplex & Super Duplex (A995) – 4A, 6A
  • Nickel Aluminium Bronze – BS EN 1982:CC333G, (B148) C95800
  • Titanium (B367) – Grade C-2
  • Monel® (All grades available on request)
  • Inconel® (All grades available on request)
  • Hastelloy® (All grades available on request)

Standard Design Codes

  • API STD 609 Butterfly Valves: Double Flanged, Lug- and Wafer-Type
  • ANSI/ASME B16.34 Valves Flanged, Threaded and Welding End
  • ANSI/ASME B16.10 Face to Face and End-to-End Dimensions of Valves
  • ANSI/ASME B16.5 Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard
  • ANSI/ASME B16.47 Large Diameter Steel Flanges: NPS 26 through NPS 60
  • ANSI/ASME B16.24 Cast Copper Alloy Pipe Flanges and Flanged Fittings: Classes 150, 300 and 600
  • BS EN 593 Industrial valves. Metallic butterfly valves
  • BS EN 1092-1 Flanges and their joints. Circular flanges for pipes, valves, fittings and accessories, PN designated. Steel flanges
  • BS EN 1092-3 Flanges and their joints. Circular flanges for pipes, valves, fittings and accessories, PN designated. Copper alloy flanges
  • BS EN 12516 Series Industrial Valves
  • ISO 5752 Metal valves for use in flanged pipe systems — Face-to-face and centre-to face dimensions
  • BS EN 1626 Cryogenic vessels. Valves for cryogenic service
  • BS 6364 Specification for valves for cryogenic service
  • MSS SP-134 Valves for Cryogenic Service Including Requirements for Body/Bonnet Extensions

Body Styles

  • Wafer Lugged (options available)
  • True Wafer
  • Wafer Non-Lugged
  • Double Flanged Short Pattern
  • Double Flanged Long Pattern
  • Double Block and Bleed
  • Raised/ flat face options