Sobre Wuzhong Intrument Co., Ltd
Founded in 1959, Wuzhong Instrument Co., Ltd. is a leading control valve manufacturer in China. The company designs and manufactures control valves, severe-service valves, actuators and valve accessories for process industries including petrochemical, power generation, nuclear energy, LNG, and oil and gas. Its products are designed and manufactured in compliance with a wide range of international standards including API, ASME, ISO and GOST. Wuzhong Instrument products have been widely deployed in major energy infrastructure projects, including the China–Russia Gas Pipeline and Hualong nuclear power projects.
Innovation-Driven, Quality-Assured
As one of China's leading control valve R&D and manufacturing centers, Wuzhong Instrument has built a robust innovation platform supported by national and regional research institutions. The company has developed over 100 control valve products, obtained more than 600 patents, received over 30 national and provincial technology awards, and contributed to the development of more than 20 national standards.
Through continuous innovation, Wuzhong Instrument has successfully developed critical control valves for ultra-high pressure, ultra-high temperature, cryogenic, nuclear and other severe-service applications, breaking international technology barriers and supporting major energy and industrial projects.
Intelligent Manufacturing
Wuzhong Instrument has developed a fully integrated intelligent manufacturing system that enhances collaboration across engineering, production, and business operations. By leveraging advanced manufacturing technologies and data-driven management, the company is able to deliver highly customized products with improved efficiency, shorter lead times, and consistent quality. This commitment to intelligent manufacturing has established Wuzhong Instrument as a leading benchmark for advanced manufacturing in China’s control valve industry.
Nossos produtos
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V-Port Control Ball Valve
Modelo: V2100
Parâmetros: Model:V2100
Structure Type: V-Port, Hemispherical Single Seat
Nominal Size:DN25～DN500
1”〜20”
Pressure Rating:Class150〜Class300
Kettle Discharge Ball Valve
Modelo: G1520
Parâmetros: Model:G1520
Structure Type: Floating Ball / Trunnion-Mounted Ball
Nominal Size:DN25～DN600
1”〜24”
Pressure Rating:Class150〜Class300
Kettle Cover Ball Valve
Modelo: G Series
Parâmetros: Structure Type: Trunnion-Mounted Ball
Nominal Size:DN500、DN600、DN700
20”、24”、28”
Pressure Rating:Class150
Control Valve
Modelo: ATS
Parâmetros: Model:ATS
Structure Type: Unbalanced Contoured Plug
Nominal Size:DN15～DN400
1/2”〜16”
Pressure Rating:Class150〜Class300
Angle Seat Valve
Modelo: DRJ
Parâmetros: Model:DRJ
Structure Type: Angled Body and Seat Design
Nominal Size:DN15～DN65
1/2”〜2 1/2”
Pressure Rating:Class150
V-Port Control Ball Valve
Modelo: A2100
Parâmetros: Model:A2100
Structure Type: V-Port, Hemispherical Single Seat
Nominal Size:DN25～DN500
1”〜20”
Pressure Rating:Class150〜Class300
Sanitary Ball Valve
Modelo: DRQ
Parâmetros: Model:DRQ
Structure Type:Floating Ball
Nominal Size:DN15～DN100
1/2”〜4”
Pressure Rating:Class150
High Differential Pressure Micro-Flow Control Valve
Modelo: ATL
Parâmetros: Model:ATL
Structure Type:Anti-Cavitation Stack Type
Nominal Size:DN25～DN200
1”〜8”
Pressure Rating:Class150〜Class2500
Applications: Oil, Gas & Water Separation Systems, Chemical Injection Systems, Blowdown & Flare Systems, Fuel Systems
PTFE-Lined (Bellows-Sealed) Control Valve
Modelo: APF
Parâmetros: Model:APF
Structure Type:Contoured Plug
Nominal Size:DN20～DN150
3/4”〜6”
Pressure Rating:Class150、PN16
Applications: Water Supply & Drainage, Fire Protection, Water Treatment Systems, Dehydration, Desalination, and Acid Gas Removal Systems
PTFE-Lined Butterfly Valve
Modelo: WB410
Parâmetros: Model:WB410
Structure Type: Centerline Sealing Type
Nominal Size:DN40～DN600
1 1/2”〜24”
Pressure Rating:Class150、PN16
Applications: Water Supply & Drainage, Fire Protection, Water Treatment Systems, Dehydration, Desalination, and Acid Gas Removal Systems
PTFE-Lined O-Port Ball Valve
Modelo: G4100
Parâmetros: Model:G4100
Structure Type: Floating Ball / Trunnion-Mounted Ball
Nominal Size:DN15～DN300
1/2”〜12”
Pressure Rating:Class150、PN16
Applications: Water Supply & Drainage, Fire Protection, Water Treatment Systems, Dehydration, Desalination, and Acid Gas Removal Systems
Long-Distance Pipeline Valve
Modelo: ATM、ATL
Parâmetros: Product Name: High-Differential-Pressure Refined Oil Pressure-Reducing Valve
Model:ATM、ATL
Nominal Size:DN50～DN150
2”〜6”
Pressure Rating:≤Class2500
Long-Distance Pipeline Valve
Modelo: G3010
Parâmetros: Product Name: High-Pressure Ball Valve
Model:G3010
Nominal Size:DN25～DN600
1”〜24”
Pressure Rating:Class600〜Class2500
Long-Distance Pipeline Valve
Modelo: G2010
Parâmetros: Product Name: Long-Distance Pipeline Ball Valve
Model:G2010
Nominal Size:DN50～DN800
2”〜32”
Pressure Rating:Class150〜Class900
Long-Distance Pipeline Valve
Modelo: G3200
Parâmetros: Product Name: Top-Entry Ball Valve
Model:G3200
Nominal Size:DN50～DN600
2”〜24”
Pressure Rating:Class150〜Class2500
Oil & Gas Wellhead Choke Valve
Modelo: ATL、ATC
Parâmetros: Product Name: Wellhead Choke Valve
Model:ATL、ATC
Nominal Size:DN100～DN200
4”〜8”
Pressure Rating:Class600〜Class2500
Structure Type: WZTP Labyrinth Cartridge
PDS Ball Valve for Product Discharge System
Modelo: G1820
Parâmetros: Model:G1820
Nominal Size:DN15～DN300
1/2”〜12”
Pressure Rating:Class300〜Class600
Features: Excellent wear and erosion resistance, with a protected spring chamber to prevent elastic-element failure. Dual-guiding system prevents lateral stem movement and ensures reliable sealing.
Pulverized Coal, Black Water and Grey Water Isolation Valve
Modelo: G1620、G1630
Parâmetros: Model:G1620、G1630
Nominal Size:DN150～DN450
6”〜18”
Pressure Rating:Class600〜Class900
Features: Supersonic-sprayed ball and plasma-overlay-welded seat. Sealed guide bushing prevents media ingress and bushing seizure during long-term operation. Scraper-type sealing seat with an ultra-hard, optimized sealing pair.
Grey Water Eccentric Rotary Valve
Modelo: VFRM
Parâmetros: Model:VFRM
Nominal Size:DN50～DN200
2”〜8”
Pressure Rating:Class150〜Class900
Features: Multi-process hardened construction for enhanced anti-clogging and erosion resistance.
Black Water Angle Valve
Modelo: ACV
Parâmetros: Model:ACV
Nominal Size:DN40～DN300
1 1/2”〜12”
Pressure Rating:Class150〜Class1500
Features: Carbide plug and seat, optimized body cavity, and streamlined throttling disc to minimize asymmetric flow impingement.
Pulverized Coal Conveying Valve
Modelo: ACC
Parâmetros: Model:ACC
Nominal Size:DN65～DN80
2 1/2”〜3”
Pressure Rating:Class600〜Class2500
Features: Bellows stem sealing and a cup-shaped plug for precise flow regulation, enabling accurate control of the air-to-coal ratio without clogging.
Control Valve for Liquid Oxygen Service
Modelo: A Series
Parâmetros: Product Name: Control Valve for Liquid Oxygen Service
Structure Type:Extended Cryogenic Type
Nominal Size:DN15～DN400
1/2”〜16”
Pressure Rating:Class150〜Class1500
Shut-Off Valve for Oxygen Service
Modelo: G Series
Parâmetros: Model:G Series
Structure Type:Floating Ball / Trunnion-Mounted Ball
Nominal Size:DN15～DN600
1/2”〜24”
Pressure Rating:Class150〜Class1500
Control Valve for Oxygen Service
Modelo: A Series
Parâmetros: Model:A Series
Structure Type:Bellows-Sealed Design
Nominal Size:DN15～DN600
1/2”〜24”
Pressure Rating:Class150〜Class1500
Angle Control Valve
Modelo: AEBM
Parâmetros: Model:AEBM
Nominal Size Inlet: DN500～DN750
20〜30”
Outlet: DN600～DN1050
24〜42”
Pressure Rating:Class600〜Class900
Applications: Suitable for applications requiring high flow capacity, high control accuracy, and low differential pressure. When the compressor approaches surge conditions, the anti-surge valve automatically opens to increase flow and move the compressor away from the surge region. The anti-surge valve also features an air-to-open configuration, remaining in the open position in the absence of an input signal.
Linear Axial Flow Control Valve
Modelo: A2000-L
Parâmetros: Model:A2000-L
Nominal Size:DN300～DN400
12”〜16”
Pressure Rating:Class600〜Class900
Applications: Suitable for applications requiring high flow capacity, high control accuracy, high differential pressure, and excellent resistance to pulsating flow-induced vibration, particularly for compressor units in long-distance transmission pipelines.
Triple Offset Butterfly Valve
Modelo: WB310
Parâmetros: Model:WB310
Nominal Size:DN100～DN1600
4”〜64”
Pressure Rating:Class150〜Class900
Applications: Suitable for applications requiring high flow capacity, relatively moderate control accuracy, and low differential pressure. Offers cost advantages for large-diameter applications and is widely used for nominal sizes ≥ DN200.
Control Valve
Modelo: A Series
Parâmetros: Model: A Series
Nominal Size:DN25～DN400
1”〜16”
Pressure Rating:Class150〜Class2500
Applications: Suitable for applications requiring relatively low flow capacity, high control accuracy, and relatively high differential pressure. Generally applicable to nominal sizes ≤ DN300, offering a more cost-effective solution.
Molecular Sieve Depressurization Valve
Modelo: V2100
Parâmetros: Model:V-Port Ball Valve (V2100)
Structure Type:V-Port Ball
Nominal Size:DN25～DN500
1”〜20”
Pressure Rating:Class150〜Class600
Temperature Range:-46℃〜200℃
Molecular Sieve Pressure Equalization Valve
Modelo: G2070/G1520
Parâmetros: Model:G2070/G1520 Ball Valve
Structure Type:Floating and Trunnion-Mounted Ball Designs with Bidirectional Sealing
Nominal Size:DN25～DN600
1”〜24”
Pressure Rating:Class150〜Class300
Temperature Range:-46℃〜200℃
Cryogenic Butterfly Valve
Modelo: WB Series
Parâmetros: Model:WB Series Cryogenic Butterfly Valve
Structure Type:Triple-Eccentric Design (with Optional Access Port)
Nominal Size:DN80～DN1200
3”〜48”
Pressure Rating:Class150〜Class900
Temperature Range:-46℃〜-100℃/-101℃〜-196℃
Cryogenic Test Standard:BS6364、GB/T 24925-2019、MSS SP-134
Cryogenic Ball Valve
Modelo: G Series
Parâmetros: Model: G Series Cryogenic Ball Valve
Structure Type: Side-Entry and Top-Entry Designs
Nominal Size:DN25～DN600
1”〜24”
Pressure Rating: Class150〜Class1500
Temperature Range: -46℃〜-100℃/-101℃〜-196℃
Cryogenic Test Standard: BS6364、GB/T 24925-2019、MSS SP-134
Cryogenic Control Valve
Modelo: A Series
Parâmetros: Model:A Series Cryogenic Control Valve
Structure Type:Single-Seated, Cage-Guided, High Pressure Drop
Nominal Size:DN15～DN900
1/2”〜36”
Pressure Rating:Class150〜Class2500
Temperature Range:-46℃〜-100℃/-101℃〜-196℃
Cryogenic Test Standard:BS6364、GB/T 24925-2019、MSS SP-134
Control Valve for Auxiliary Steam from the Conventional Island to the Deaerator
Modelo: ABM
Parâmetros: Model:ABM
Structure Type:Perforated Trim
Nominal Size:DN80～DN600
3”〜24”
Pressure Rating:Class150〜Class300
Desuperheating and Pressure Reducing Station
Modelo: APTS-F/APTS-Z
Parâmetros: Model:APTS-F/APTS-Z
Structure Type:Split Skid-Mounted Type
Nominal Size:DN40～DN600
1 1/2”〜24”
Pressure Rating:Class150〜Class2500
Valve for Desulfurization System
Modelo: WB310
Parâmetros: Model:WB310
Structure Type:Triple-Offset Inclined Conical Surface
Nominal Size:DN80～DN1100
3”〜44”
Pressure Rating:Class150〜Class600
Main Steam Drain System Valve
Modelo: G3010
Parâmetros: Model:G3010
Structure Type:Trunnion-Mounted Ball
Nominal Size:DN25～DN500
1”〜20”
Pressure Rating:Class600〜Class1500
Turbine Drain Valve
Modelo: G1520
Parâmetros: Model:G1520
Structure Type:Floating Ball, Trunnion-Mounted Ball
Nominal Size:DN15～DN600
1/2”〜24”
Pressure Rating:Class150〜Class400
Amine Booster Pump Recirculation Control Valve
Modelo: ATL/ATM
Parâmetros: Model:ATL/ATM
Structure Type:Soft Anti-Cavitation Staged Type / WZTP Labyrinth Block
Nominal Size:DN25～DN200
1”〜8”
Pressure Rating:Class600〜Class2500
PX Program-Controlled Valve
Modelo: G1820
Parâmetros: Model:G2072/G1820
Structure Type:Soft Seal / Metal Seal
Nominal Size:DN15～DN300
1/2”〜12”
Pressure Rating:Class300〜Class600
PDS High-Cycle Abrasion-Resistant Ball Valve
Modelo: G1820
Parâmetros: Model:G1820
Structure Type:Trunnion-Mounted Ball, Full Port
Nominal Size:DN15～DN300
1/2”〜12”
Pressure Rating:Class300〜Class600
Polypropylene Discharge Valve
Modelo: G1820
Parâmetros: Model:G2072/G1820
Structure Type:Soft Seal / Metal Seal
Nominal Size:DN15～DN300
1/2”〜12”
Pressure Rating:Class150〜Class600
High-Pressure Amine Solution Level Control Valve
Modelo: ATL/ATM
Parâmetros: Model:ATL/ATM
Structure Type:Anti-Cavitation Staged Type / WZTP Labyrinth Block
Nominal Size:DN25～DN200
1”〜8”
Pressure Rating:Class600〜Class2500
HHPS High-Pressure Separator Level Control Valve & CHPS Cold High-Pressure Separator Level Control Valve
Modelo: ATL/ATM
Parâmetros: Model:ATL/ATM
Structure Type:Anti-Cavitation Staged Type / WZTP Labyrinth Block
Nominal Size:DN25～DN200
1”〜8”
Pressure Rating:Class600〜Class2500
Feed Oil Pump Outlet Recirculation Valve
Modelo: ATL
Parâmetros: Model:ATL
Structure Type:Anti-Cavitation Staged Type
Nominal Size:DN25～DN150
1”〜6”
Pressure Rating:Class600〜Class2500
Liquid Ammonia Control Valve
Modelo: ATE(HTE)
Parâmetros: Model:ATE(HTE)
Structure Type:Spatial Turning Angle, Ant-Hole Type
Nominal Size:DN15、DN20、DN25
1/2”、3/4”、1”
Pressure Rating:Class600〜Class900
Galeria da empresa
Certificações e prêmios
Histórias de sucesso
Oil refinery
stable operation
Safe, leak-tight, corrosion-resistant, and reliable.
Coal Chemical Plants
stable operation
Built for severe high-temp/pressure solids service: wear/corrosion-resistant, anti-clogging, tight shutoff.
Power Stations And Power Units
stable operation
High-temp/pressure capable, fast and tight, safe and reliable, thermal-shock and erosion resistant.
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