... 3.Standard: BS, ANSI, DIN, JI BS pvc ball valve1. Material : new materials of the PVC ,socket or thread2.Environment friendly, non-toxic ... pressure.5. No vibration , no noise. ;6. Applible to the open and close .Easy and fast installation, making cost minimized7 ... produce different products according to client's requirements,as the materail ,quality, the size, the color, etc. BS pvc ball valve dn40