About WZI

Wuzhong Instrument Co., Ltd. (WZI) has been in business for 60 years.  WZI was founded in 1959 as a small factory to produce gauges and other instruments.  After merging with No. 7 Shanghai Instrument Factory in 1965, WZI started to produce and supply control valve products to the customers all over the country.  Between 1980 and the early 2000’s, WZI obtained licenses from other valve manufacturers to produce control valves, becoming the first choice for control valves for the China industrial market.  In part our continuous improvement of product lines, WZI started to invest in multi-turn/multistage designs producing these severe service valves since 2014.  The newest product added is the ATL product, a multistage notch style valve widely used in the industry for severe service.  The WZI name has been synonymous with industrial control valves in China.  For over 50 years, WZI has supplied high quality valves to thousands of customers in China and the overseas market. A partial listing of the product range of WZI includes:

• A Series control valves, globe and angle plug orifice, cage guided, low noise, single and multistage designs.

• HP series high pressure plug orifice and cage

• ATL and HT severe series multistage control valves

• WB series double and triple eccentric butterfly valves

• G series floating and trunnion mounted ball valves

• A2000 series in-line axial flow control valves

• ATM Multi-turn / Multi-stage control valves