Construction method and product overview

Home drain takes into account not only the modern bathroom interior but also the convenience of drain cleaning and the function of blocking odors and pests.
Building sanitary facilities, drainage and ventilation, construction methods and product overview Black Check Valve and Vent Drain provide complete solutions for all sanitary system drainage and ventilation methods and products for apartments, officetels, hotels, motels, villas, single-family homes, and other large-scale residential and commercial buildings.
Black Check Valve

Black Check Valve

Ventdrain

Ventdrain

Black Check Valve & Vent Drain Drainage, Ventilation / Features ① Significantly reduced construction costs: Simplified design and construction of sewage, drainage, and ventilation systems. ② Active blocking: blocking backflow (negative pressure) and (positive pressure) in the drain pipe ③ Vent drain method: Convenient for foundation/slab floor installation ④ Convenient Cleaning and Maintenance: Check Your Home's Vent Drain
Black Check Valve & Vent Drain Method
    • Existing drainage and ventilation systems lack air ventilation and do not allow smooth drainage flow.
    • Black check valve & vent drain system is designed and constructed to solve the problem of negative and positive pressure by selecting 2 drain pipes or 1 drain pipe, toilet, washbasin, bathroom floor, drainage, and ventilation.
Black Check Valve & Vent Drain - Drainage, Ventilation System Operation Principle
Black Check Valve & Vent Drain Design Concept
    • ● Black check valve 75A, 100A horizontal pipe or (backflow prevention) / Design and install at least one convenient location on the sewage and drain pipe.
Black Check Valve & Vent Drain Ventilation Method
Existing P-trap/U-trap drainage (pipe ventilation) method