I used to use the similar vacuum bleeder but long time ago, I broke the air coupler so no longer be able to use the vacuum feature.
I still use it with one way valve installed in the tube so that I can use it as one-man bleeder.
You use this vacuum bleeder in conjunction with the normal brake bleeding procedure of pressing and releasing the brake pedal.
It will prevent the air being sucked back into the brake hydraulic system through the thread of bleeder plug when releasing the pedal while you are working on your alone.
However, you will always see some bubbles in the bleeder tube as the vacuum pressure will suck some air through the thread of bleeder plug.
Therefore, you need to know how many times to press and release the brake pedal to completely get rid of the air from the system. You can’t tell it by looking at the clear tube as there will be lots of bubbles by the time when you arrive at the bleeder.
I moved onto Pressure bleed method. You can get nice looking one from most of the tools manufacture but also you can make similar thing using garden sprayer and attach pressure gauge or even just tyre valve to measure the pressure.
I knew the design of reservoir on old Honda cars is not suitable for most of the attachments designed for non-JDM models (like the ones in the photo) so I made one using old Honda reservoir cap with silicone sealant. It worked quite well and so much better than the vacuum bleeder.
However, my DIY attachment started to leak recently so I have now bought this proper attachment from Japanese tools manufacture designed for Honda brake reservoir.
I just need the low pressure coupler and modify the pressure bleeder hose to connect this attachment.
Winter DIY project for you??
Regards,
Kaz