Quadra-Fire Mt. Vernon AE Drop Tube Thermocouple Part #SRV7000-381 Replacement ring mount thermocouple K for Quadrafire pellet stoves. This is the thermocouple that mounts on the drop tube. Fits the following Quadra-Fire Pellet Stove models: Quadrafire Mt. Vernon AE Quadrafire Mt. Vernon AE Insert Quadrafire Edge 60 Zero Clearance Fireplace Quadrafire part # SRV7000-381 OEM Quadrafire part.