tools - knob of propane tank was stuck - Home Improvement Stack

I used the grill last year, and am planning to replace the propane tank. However, I found that I could not turn the knob. I marked the knob with red color in the following figure. I guess it maybe

Grill propane tank stuck. Is it a loss? What I think is the valve turns to dust. : r/AskMechanics

Grill propane tank stuck. Is it a loss? What I think is the valve turns to dust. : r/AskMechanics

Homemade propane tank valve removal tools for use with an impact. Easy peesy.

Propane Tank Tool Box : 10 Steps - Instructables

My handwheel won't turn on. What can I do?

Propane For Dummies How to Reset Your Propane Tank OPD Valve Low Gas Flow Fix

True Temper 60 in. Hardwood Wheelbarrow Handle (Pack of 2) 10000-03683 - The Home Depot

Husky Compression Sleeve and Faucet Puller 63876 - The Home Depot

How to Remove a Stripped Screw: An Overview

DIY tool for remove Propane Tank Valve

Propane For Dummies How to Reset Your Propane Tank OPD Valve Low Gas Flow Fix

How to make a Valve opener tool for propane canister, car tires, and bicycle tires