DuraVent FasNSeal W2 Drain Fitting: a drain outlet at the bottom of a vertical vent
The DuraVent FasNSeal W2 Drain Fitting is a double wall cap with a drain tube for the bottom opening of a W2 tee. It replaces the regular tee cap at the base of a vertical vent run. This gives condensate, the water that collects from the exhaust, a way out instead of letting it sit in the pipe. FasNSeal W2 is DuraVent’s double wall stainless steel vent for high efficiency gas boilers, furnaces, and water heaters, with an air space between its two walls.
Choose a 3, 4, or 5 inch size to match your vent. The fitting has a 5/8 inch drain tube for connecting plastic tubing, which must form a loop called a trap. DuraVent calls for a drain at the base of each vertical run and every 30 feet along a horizontal run. A drain also belongs near the appliance unless the appliance has its own. An experienced professional fits the complete run using FasNSeal parts. Need the single wall cap? See the DuraVent FasNSeal Drain Fitting for single wall venting. The DuraVent FasNSeal W2 Drain Fitting ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.










Commercial projects may require custom parts and unique system designs. Duravent offers complete project assistance:








































