No, Green Drain™ is not a backflow device, however, it can withstand up to 4 lbs. of pressure before the silicone valve inverts.
Plumbing regulations for Trap Seal Devices require the silicone valve to essentially fail or invert if the pressure within the pipe is greater than 4 lbs.
- Green Drain™ provides a barrier of protection between the sewer and the application site. Used in the outlet connections of floor drain bodies, or the inside of floor drain strainers to seal the opening to prevent odors, sewer gases, and insects from entering up through the floor drain grate. The Green Drain’s four flexible silicone sealing ribs ensure easy installation into openings that have variations in size. The Green Drain will open to allow drainage and close when there is no water flow. This Inline Drain Trap can be used in either new construction or retrofit applications where trap primers were never installed. Order this one way drain valve online today.