Suzhou SUFA DA Valve Co.,Ltd., is a joint venture company of China and Germany. Our company is located in Suzhou New Industry Zone, which is 70 km from Shanghai, the largest city and port of China.Our products include resilient seated gate valves, all types of butterfly valves, mainly used in water works. These valves are designed basing on relevant AWWA, BS and DIN standards. We can say that our valves are with Germany quality but China price.The follows is the descriptions of our typical AWWA resilient gate valve:Resilient seated gate valves, designed and tested acc. to AWWA C509-95, face-to-face length to ANSI16.10, flange dimensions acc. to ANSI 16.10, body, cover and wedge of ductile iron ASTM A536 70-50-05, non-rising stem of stainless steel ASTM 410/304/316, wedge wholly lined with NBR rubber, stem nut and guide bushing bronze ASTM C61900, bolt and nut of zinc-coated carbon steel or stainless steel ASTM A193 B7/B8, handwheel carbon steel of ASTM A36, valve inside and outside wall electrostatic epoxy resin powder coating at min. thickness of 200μm.