The Challenge

The extreme range of operating conditions and the requirement for flexibility make R&D a highly demanding application for most conventional pressure regulators. Challenges include:
• High flow rates and pressures
• Ultra-precise and accurate pressure regulation
• Very large changes in supply pressure – especially if the facility is fed from a tank
• Very large changes in flow rate
• Frequent changes in pressure set-point
• Setting the pressure exactly before test start
• Customisable transient response
• Ease of installation and maintenance
• Noise reduction

For information, take a look at the case study sheet.

Application Example:

  • The Engine Component Aerothermal Test (ECAT) Facility is a £ multi-million flow loop at the University of Oxford, used to develop the latest jet engine technology. The facility is fed by a 60 m3 / 2100 ft3 tank that discharges during a 60 second test. An Oxford Flow IHF DN 150 / 6” is used to regulate the tank outlet pressure to 10 bara / 145 psia as the pressure in the tank reduces from 27 bara / 390 psia down to 12 bara / 174 psia. Pressure must be maintained to within 0.5% over the test, with a system flow rate over 10 kg/s / 17000 SCFM. The regulator has been in service since 2014, with over 1500 successful experiments and no maintenance. The set point is regularly changed and pre-set precisely before a test.

The solution: Oxford Flow’s IHF series

The Oxford Flow IHF Series of pressure regulator offers superior accuracy and stability for high pressure and flow gas applications compared to conventional pressure regulators. Our patented pressure balanced design eliminates droop, perfect for systems with large inlet pressure and flow variation. The unique control mechanism has only one moving part (no diaphragms or springs), making the IHF inherently stable and reliable.

Oxford Flow’s modular design allows for customisation of opening and closing speeds for delicate downstream systems, and means that the pressure set-point is known precisely before the flow is initiated. The Oxford Flow team is on hand to help create the right control arrangement for your system. Our extremely compact device makes light work of installation and servicing. The IHF series fits between PN or ANSI flanges to reduce the installation footprint, removing the need for lifting equipment. The flow path through the IHF reduces noise emissions compared to full bore alternatives.