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Precision Valve & Flow Control Solutions

Control Seal Flow Control (Shanghai) Co., Ltd. is a trusted manufacturer of industrial valves, actuators, and control systems. Delivering high-performance, corrosion-resistant solutions for oil & gas, chemical, power, water, and more.

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About Control Seal

A trusted name in industrial flow control with a focus on innovation, quality, and customer satisfaction.

Manufacturer of Valves & Control Systems

Control Seal Flow Control (Shanghai) Co., Ltd. is a manufacturer of valves, actuators, and related control products. With years of experience in the Chinese market, we have evolved from a sales-focused enterprise into a comprehensive industrial solutions provider.

Our operations now include manufacturing facilities, sales offices, spot warehouses, valve automation assembly centers, and dedicated service and maintenance hubs — ensuring fast delivery and reliable support.

  • Integrated manufacturing & service
  • Domestic and international supply chain
  • Quality control at every stage
  • After-sales support & maintenance
Control Seal Factory

Our Product Center

A comprehensive range of industrial valves designed for reliability, durability, and performance in harsh environments.

General Valve

General Valve

Standard industrial valves for general-purpose applications in water, air, steam, and non-corrosive media.

  • Types: Gate, Globe, Check, Ball
  • Size Range: DN15–DN600
  • Pressure: PN10–PN100
  • Material: Carbon Steel, Stainless Steel
Special Valves

Special Valves

Custom-engineered valves for high-pressure, high-temperature, or hazardous environments.

  • Applications: Cryogenic, Nuclear, Offshore
  • Standards: API, ASME, ISO
  • Testing: Fire-safe, Low-emission
  • Options: Bellows seal, Extended stem
Control Valve

Control Valve

Precision valves for regulating flow, pressure, temperature, and level in automated systems.

  • Types: Globe, Angle, Diaphragm
  • Actuators: Pneumatic, Electric, Hydraulic
  • Positioners: Analog, Digital, Smart
  • Signal: 4–20mA, HART, Profibus
Lined Corrosion-Resistant Valve

Lined Corrosion-Resistant Valve

Designed for aggressive chemical environments using PTFE, PFA, or rubber lining.

  • Lining: PTFE, PFA, EPDM, FPM
  • Body: Cast Iron, Carbon Steel
  • Applications: Chemical, Pharmaceutical, Food
  • Temp Range: -40°C to +200°C
Fully Welded Ball Valve

Fully Welded Ball Valve

Zero-leakage ball valves with full penetration welds for pipeline integrity.

  • Design: Top-entry, Side-entry
  • Welding: Submerged arc, Narrow gap
  • Standards: API 6D, ISO 14313
  • Size: DN50–DN1200
Ammonia Valve

Ammonia Valve

Shut-off valves for ammonia and other refrigerant gases in industrial cooling systems.

  • Media: NH3, CO2, Freon
  • Pressure: Up to 32 bar
  • Seals: PTFE, Graphite
  • Connection: Flanged, Threaded
Actuators

Valve Actuators

Pneumatic, electric, and hydraulic actuators for automated valve operation.

  • Types: Rack & Pinion, Scotch Yoke
  • Signal Input: 4–20mA, 0–10V
  • Fail-Safe: Spring return, Double acting
  • IP Rating: Up to IP68
Butterfly Valve

Butterfly Valve

Lightweight, compact valves for on/off and throttling applications.

  • Types: Lug, Wafer, Double Flanged
  • Disc: Stainless Steel, Coated
  • Seals: EPDM, NBR, PTFE
  • Size: DN50–DN2000
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Industry Applications

Our valves are engineered for performance and safety across critical industrial sectors.

Oil & Gas Industry

High-integrity valves for upstream, midstream, and downstream operations. Designed for extreme pressures, temperatures, and corrosive environments.

Chemical & Pharmaceutical

Corrosion-resistant lined valves ensure purity and safety in chemical processing, fiber production, and pharmaceutical manufacturing.

Water & Power

Reliable flow control for water treatment, desalination, and thermal power plants. Durable solutions for continuous operation.

Latest News & Insights

Stay updated with technical insights, product innovations, and industry trends.

November 7, 2023

Lined Corrosion-Resistant Valves

Discover how lined valves protect against corrosive media in chemical, pharmaceutical, and food industries using PTFE, PFA, and rubber linings.

Read More
November 7, 2023

Fully Welded Ball Valve Technology

Learn about narrow-gap submerged arc welding techniques used in ultra-thick cylindrical joints for leak-proof pipeline integrity.

Read More
November 7, 2023

Working Principle of Ammonia Valves

Understand how ammonia shut-off valves regulate high-pressure refrigerant gases in industrial cooling systems with precision control.

Read More
Ongoing

Quality & Customer Focus

At Control Seal, we prioritize business integrity, customer satisfaction, and casting high-quality industrial goods.

Learn More

Get in Touch

Have questions about our valves or need a custom solution? Reach out to our team for expert support.

Contact Information

Email: cseal@control-seal.com

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