Bifold Introduce the New HIPEX High Speed Exhaust Valve Range
The new Bifold HIPEX Valve is a 2 way, normally closed directional control valve with a venting flow rate proportional to the differential pressure between the inlet and the pilot signal pressures. It is specifically designed for both modulating and "on-off" pilot pressure signals.
When the pilot pressure signal is equal to or above the main valve inlet pressure, the valve exhaust port remains closed.
This compact modular design is manufactured from 316L stainless steel or aluminium and is supplied with a pilot/valve seat assembly (patent pending). The Model HIPEX series is SIL 3 third party certified to IEC 61508 Parts 1 & 2.
Available in 1/2", 1" & 2" with various port sizes ranging from 1/4", 3/8" & 1/2" NPT sizes (1/2" HIPEX Valve) and 3/4" & 1" NPT sizes (1" HIPEX Valve). The 2" HIPEX Valve is supplied with 2" or 1 1/2" NPT port sizes. The valve operates on a 1:1 pilot pressure to valve pressure ratio at pressures between 2 and 10 bar g.
This specially designed valve is able to perform various functions:-
Partial Close Testing Function
When the pilot pressure falls below the main valve inlet pressure, the valve quickly exhausts the excess pressure until both the valve and pilot pressures are again equal, then the exhaust port closes.
Pressure Relief Function
If the main valve inlet pressure increases above the pilot pressure, the valve automatically exhausts the excess valve and the excess valve actuator pressure.
Applications include activation of control valves used in chemical, petrochemical, oil and gas, pharmaceutical and food processing markets. This range has been designed and tested at Bifold and supplied for use with the majority of positioner/valve actuator manufacturers.