The pressure of a refrigerant cylinder containing saturated refrigerant is determined by what

According to ideal gas equation, we have

PV = nRT

According to above equation, pressure exhibited by any gas depends upon number of moles of gas, temperature and volume.

Thus, pressure of a refrigerant cylinder containing saturated refrigerant is determined by temperature, number of moles of gas and volume occupied. In general, pressure exhibited by system will increase with increase in temperature and number of mole of gas, while it will decrease with increasing volume.