*QUENCH: Water flushing will generally remove crystal deposits and low pressure steam will remove ‘coke’ from hydrocarbons.To remove or prevent the build up of crystals or decomposition products on the atmospheric side of the seal *Plan #62 The quench gland. Often called the API gland. In general usage the term quench is frequently used to describe the cooling of a heated metal, or to extinguish a flame. In the seal business, quench (Q) is a term used to describe the introduction of a fluid outside the mechanical seal. We use this fluid to: * To cool the product we are sealing * To dilute any leakage that might migrate across the seal faces. * To introduce low-pressure steam behind the seal to put out a fire. * A close fitting bushing (DB) in the end of the gland directs the quench fluid down a drain hole on the opposite side of the seal gland * Steam is the most popular quench medium, but care should be taken that the steam pressure is very low, or the hot steam will penetrate through