1998Founded

23,800+m² manufacturing footprint

680+team members

5group companies

30+production units

ENGINEERING SELECTION / CNZG

Control starts with
the right conditions.

Start with a known model, a valve family or the actual duty conditions—not an endless wall of product photographs.

Browse 273 products ↗

Q347F / CLASS 150

Q347F-150LBWorm Gear Fixed Flanged Ball Valve

THREE WAYS IN

Start with what you already know.

INDUSTRY ROUTES

Oil & Gas Petrochemical Coal Chemical Power & Energy Pharmaceutical & Fine Chemical Metallurgy, Mining & Aluminium Pulp & Paper Urban Infrastructure & Water

COMPARE THE STARTING POINTS

Four featured products.
A route into 273 records.

Each card keeps the first decision clear: model, family and the next enquiry action.

Gate Valves

Z941W-25P

Electric Flanged Gate Valve

View product ↗

Butterfly Valves

D343W6/10/16/25P

Large Bore Flanged Butterfly Valve

View product ↗

Ball Valves

BQ41F-16/25P

Integrated Insulated Ball Valve

View product ↗

Ball Valves

Q347F-150LB

Worm Gear Fixed Flanged Ball Valve

View product ↗

Power Station Valves

CNZG-2030

Power Station Valve

View product ↗

Ball Valves

CNZG-2305

Ball valve

View product ↗

THE COMPANY BEHIND THE SPECIFICATION

The manufacturing organisation behind the specification.

Zhejiang Zhonggong Valve Group Co., Ltd. is headquartered in Oubei, Yongjia, Wenzhou, with manufacturing operations across Wenzhou, Lishui and Qingtian. The group brings valve research, engineering, manufacturing and sales into one operating system.

The Oubei headquarters houses administrative, research, sales, quality-control and process-management functions. The group has five subsidiaries, including three wholly owned subsidiaries and two controlled companies.

The product portfolio is organised around GB, HG, API, ANSI, JIS and DIN standard systems and covers ball, butterfly, gate, globe, check, bellows, plug, power-station, forged-steel, stainless-steel, API and other industrial valves.

Read the full company profile ↗

COMPANY HISTORY

Capability has a traceable timeline.

The key milestones from the company’s original history material show how its manufacturing footprint and group structure developed.

011998Foundation
The predecessor factory was established in Oubei Puyi Industrial Zone and was later renamed Yongjia Zhonggong Valve Factory.
022002Expansion
Production expanded and moved to Oubei Wuxing Industrial Zone under the name Zhejiang Zhonggong Valve Co., Ltd.
032003Expansion
A manufacturing subsidiary was established in Qingtian, Lishui, later renamed Zhejiang Zhonggong Valve Group Qingtian Zhonggong Valve Co., Ltd.
042009Group development
The company became Zhejiang Zhonggong Valve Group Co., Ltd., with registered capital of RMB 56.78 million and four subsidiaries.
052019Capability investment
The group invested in intelligent production and testing equipment, with registered capital increasing to RMB 127.78 million.
062023Digital transformation
A digital-workshop transformation programme began to improve production efficiency and specialised manufacturing capability.

CONTROLLED MANUFACTURING

See how products move through manufacturing and verification.

Material control

Incoming materials and cast or forged components establish the first quality gate in the manufacturing sequence.

Precision machining

Dedicated machining units support valve bodies, sealing surfaces and critical connection features.

Assembly

Assembly, in-process records and operator checks are presented as one understandable manufacturing sequence.

Testing

Pressure testing, non-destructive examination and quality records support product verification.

Delivery

Finished products move through preparation, storage and dispatch ready for project delivery.

APPLICATION ROUTES / 08

Understand the duty by industry, then move into products and RFQ.

Application-led routes help project teams frame valve requirements across process industries, energy and infrastructure.

01Oil & GasExplore product routes ↗02PetrochemicalExplore product routes ↗03Coal ChemicalExplore product routes ↗04Power & EnergyExplore product routes ↗05Pharmaceutical & Fine ChemicalExplore product routes ↗06Metallurgy, Mining & AluminiumExplore product routes ↗07Pulp & PaperExplore product routes ↗08Urban Infrastructure & WaterExplore product routes ↗

QUALITY EVIDENCE

Build verifiable trust through existing certificates and process capability.

This presentation uses the company’s current certificate images and confirmed quality context without extending unclear certification scope.

PROJECT ENQUIRY / CNZG

Define the duty.
Build a better RFQ.

Send medium, pressure, temperature, nominal size, material and actuation requirements so sales and technical service can start with useful project information.

Control starts with
the right conditions.

Start with what you already know.