How Much Pressure to Depress a mk1/mk2 Tank Valve? [SOLVED]

Hello Friends!

I have a question, I’m trying to check if the valve on the tank of my Rattler is ‘stuck’. (The title is because there’s way more familiarity with Impacts and the valve is the same as the mk1/mk2).

How much pressure does it take to press it down to open it? I’ve used the end of an Allen wrench and pushed on the pin decently hard but I’m always afraid of damaging something. Do I really need to use a lot of force or it should only take a moderate amount to open the valve?

Thank you!

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