Tomorrow’s Valve Today
Out of the box thinking squares the circle
Whatever your industry, ultimate reliability is critical. That’s why Hobbs developed a better valve, with innovations such as a square shaft – a valve that can be relied on to work better, hour after hour, year after year.
It’s hip to be square
A square shaft makes for a superior, more reliable valve. Our design removes the need for pins or keyways that are typically used, and can result in a weaker shaft. Square is good – it’s easier to clamp to, and makes maintenance fast and easy.
Patented Seat & Seal
Our innovations mean valve design, which had been static for 15 years, have taken a leap forward. The patented design eliminates the need for a gasket by using two replaceable sealing components, with only one possible gasket leak path.
Engineered in the UK
Celebrating ten years of innovation in valve technology, Hobbs is proudly based in the UK where all key engineering developments are devised, manufactured and tested. We’re proud to be British.
FULLY RATED, ZERO LEAKAGE
Depend on our patented seat and seal to handle the pressure. When it absolutely has to perform, you can rely on a Hobbs Valve. Engineered better to perform better, zero leakage and long life are demands we expect you to make.
When the time comes to carry out essential maintenance, the Hobbs design pays massive dividends. Components can be quickly inspected, removed and replaced, saving you valuable plant downtime.
Triple Offset compared...
Here we can see how a triple offset butterfly valve would look sitting in a pipeline alongside some other industry standard valve types.
Whilst offering equal performance to the others, the Hobbs Valve clearly occupies far less space. When you combine this benefit with less weight, less cost, zero friction and zero leakage. The choice is simple.
Features and benefits
Tightening of thrust pad tolerance
Due to the innovative design of our square drive Hobbs Valve no longer requires a temperature expansion gap to allow for shaft movement. This eliminates the possibility of collision between seat and seal during the installation of an actuator, transport of the valve or heat expansion during high or low intensity applications on the Hobbs Valve triple offset butterfly valve.
Free floating bearings
Valve manufacturers experience bore miss-alignment whilst machining the bearing bore causing galling between components which can increase the torque requirement. The use of free floating bearings eliminates unnecessary friction by taking up any tolerance due to bore misalignment maintaining parallel bearing load between shaft and internal bearing surface. This ensures the torque required to seal the valve is kept to a minimum at all times.
Circular conical sealing geometry
Historically all triple offset butterfly valve manufacturers have an elliptical sealing geometry and valvebore due to the necessity to manufacture the third offset geometry into the sealing components. Hobbs Valve is able to eliminate the need for this through the use of up to date modern machines increasing the Cv value of the valve and reducing the machining cycle times during its manufacture.
Bearing protectors as standard
Bearing protectors are normally an added cost when purchasing a valve as it is deemed in many cases to only be necessary in dirty service. Hobbs believe that this component also has an effect on maintaining reduced torque requirements during its life cycle by reducing the potential of particle ingress between the bearing, bearing bore and shaft.
Removal of Keyways or Pins
Commonly disks are mechanically operated through the use of pins or keyways along the drive chain. This technique has the ability to weaken the shaft, increase torques and introduce potential of shearing during high velocity applications. Through the introduction of a square shaft along the full length of the drive chain Hobbs has eliminated these problematic areas whilst also reducing the torque requirement to operate the valve.
Integral anti blowout device
API 609 requires the prevention of the shaft from exploding out of the valve whilst under pressure. In an attempt to guarantee this from occurring Hobbs has four anti blowout devices, with the primary anti blowout device being integrally machined into the gland plate also eliminating the possibility of human error.