Air pressure regulator

[Phileas85]

Hi!
I have a mini-sized pressure regulator. It has 7/16'' in the inlet and outlet, reducing pressure from 10 bar to 3 bar. There is a reducer fitting, inlet is 7/16 and outlet is 1/4''. What happens if I install this fitting at the outlet of the pressure regulator? Since the fitting represents a sudden area reduction, does that reduction is added to that produced by the regulator?

Shop air is supplied at 10 bar by a 7/16 hose. The pneumatic actuator I want to diagnose has a 1/4 hose at its inlet, working at 3 bar.

Thanks.
Phileas.

 

[LittleInch]

I would say it probably would, but how much depends on the flow rate / velocity, length of line from regulator to your actuator and whether the flow is steady or sudden bursts. If you're concerned it will affect your test, make sure you mount a pressure gauge or transmitter to eliminate air supply as an issue.

My motto: Learn something new every day

Also: There's usually a good reason why everyone does it that way

 

[bimr]

The addition of the reducer will decrease the maximum air flow rate available to the tool. You can observe with a reduction of pressure when operating at the maximum air flow rate. At air flow rates less than the maximum, the pipe reduction will not minimal affect.

The reducer will not have any effect on the regulator.