... for water supply, reducing tee threaded, plastic reducing tees, polyethylene reducing tee1. TEE 2. HQ (high quality) raw material: PVC-U ... resistance6. Healthy, bacteriological neutral, conforming to drinking water standards7. Convenient and reliable installation, low construction expenses8 ... usage life for at least 50 years pp reducing tee, pp tee for sewage and drainage, ppt for water supply