You sent me two acetylene regulators, I bought an oxygen regulator and an acetylene regulator. The regulator you sent me as an oxygen regulator, the pressure gauge exploded, I had to change it to a high pressure gauge.
You sent me two acetylene regulators, I bought an oxygen regulator and an acetylene regulator. The regulator you sent me as an oxygen regulator, the pressure gauge exploded, I had to change it to a high pressure gauge.