... , electric and pneumatic. Company Profile: Tianjin Tanggu Tianshun Valve Co., Ltd., have manufactured butterfly valves for over 17 years. We produce ... including Wafer, Lug, U type, D341(centerline double flanged butterfly valve), D343(double eccentric flanged butterfly valve), Grooved end type ... , Double disc wafer check valve, Resilient flapper check valve, ...