Ball Valve, Butterfly Valve, Electric Actuator Manufacturer & Supplier

About Shoulong Valve

SLVCN - Jiangsu Shoulong Valve Co., Ltd, is a leading professional valve manufacturer based in Nanjing, China. With decades of engineering excellence, we specialize in designing and manufacturing high-performance flow control valves for demanding industrial applications across oil & gas, chemical, water treatment, power generation, and more.

Our company boasts a comprehensive range of production and testing equipment, ensuring the highest quality standards for every product that leaves our facility. From R&D to final inspection, we maintain strict control over every stage of manufacturing to deliver reliable, durable, and compliant valve solutions.

ISO 9001 Certified Manufacturing
In-House R&D and Mold Development
Lifetime Service Support

Our Featured Products

Explore our comprehensive range of industrial valves and actuators designed for reliability, precision, and long-term performance.

Electric Ball Valve

Automated on/off control with precise positioning. Ideal for remote operation in pipelines.

• Voltage: AC220V/DC24V

• Pressure: Class 150-600

• Material: Stainless Steel, Carbon Steel

Pneumatic Ball Valve

Fast-acting valve with air-driven actuator for high-cycle applications.

• Air Pressure: 4-7 bar

• Operation: Double Acting / Spring Return

• Seal: PTFE, RPTFE, Metal

Manual Ball Valve

Durable hand-operated valve for isolation and flow control in critical systems.

• Design: 2PC, 3PC, Trunnion-Mounted

• Size: 1/2" to 48"

• Standards: API 6D, ASME B16.34

Electric Butterfly Valve

Compact, cost-effective solution for large-diameter flow regulation.

• Torque: 50Nm to 2000Nm

• Control: On/Off or Modulating

• Flange: ANSI, DIN, JIS

Pneumatic Butterfly Valve

High-speed operation with fail-safe function for emergency shutdown.

• Actuator Type: Double Eccentric

• Seat: EPDM, NBR, PTFE Lined

• Temperature: -20°C to 200°C

Forged Steel Ball Valve

High-pressure rated valve for oil & gas, petrochemical, and refining.

• Class: 300, 600, 900, 1500, 2500

• Material: A105, F304, F316, F51

• Testing: API 598, Shell Test

Electric Actuator

Smart multi-turn and quarter-turn actuators with digital controls.

• Output Torque: 50–2000 Nm

• Protection: IP67, IP68

• Communication: Modbus, Profibus, HART

Pneumatic Actuator

Robust scotch yoke and rack & pinion designs for harsh environments.

• Air Supply: 4–8 bar

• Fail-Safe Options Available

• Explosion-Proof Versions

3 Way Ball Valve

L or T-port configuration for flow diversion or mixing applications.

• Port Pattern: L-Port, T-Port

• Connection: Flanged, Threaded, Welded

• Application: Heat Exchangers, Mixing Systems

View All Products

Why Choose SLVCN?

Trusted by importers worldwide for quality, innovation, and long-term partnership.

Direct Factory with R&D

We operate our own R&D department and production lines, allowing us to develop custom molds and deliver OEM/ODM solutions efficiently. This vertical integration ensures faster turnaround, better cost control, and consistent quality.

Full-Range Product Portfolio

Our extensive catalog covers electric, pneumatic, and manual valves for diverse working conditions — from cryogenic to high-temperature, low to ultra-high pressure, and corrosive to abrasive media.

Guaranteed Quality & Lifetime Service

Every valve undergoes rigorous testing per international standards. We stand behind our products with lifetime technical support and after-sales service — one purchase, lifelong partnership.

Dedicated Service Team

Our professional team responds promptly to inquiries, provides detailed technical support, and assists with selection, customization, and documentation for smooth global shipping.

Frequently Asked Questions

What types of valves do you manufacture?

We specialize in ball valves (electric, pneumatic, manual), butterfly valves (wafer, flange, lined), forged steel valves, 3-way valves, and high-pressure valves. We also produce electric and pneumatic actuators.

Do you offer OEM/ODM services?

Yes, we have full in-house R&D and mold development capabilities, allowing us to customize designs, materials, and branding according to client specifications.

What certifications do your products have?

Our manufacturing process follows ISO 9001 standards. Products are tested per API 598, ASME B16.34, and other international requirements. Material traceability and test reports are provided.

What is your delivery time?

Standard products ship within 15–30 days. Custom orders may take 30–45 days depending on complexity. We offer express options upon request.

How do you ensure product quality?

We use advanced CNC machinery, perform 100% shell and seat testing, and conduct material verification (PMI). Our QA team inspects every stage from raw material to final packaging.

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Precision Flow Control Solutions