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SME Valves – Precision Flow Control Solutions

World-leading manufacturer of patented siphon breakers, industrial valves, and hydraulic control systems for critical infrastructure and industrial applications.

Explore Our Products

About SME Valves

SME Valves is a globally recognized innovator in fluid control technology, specializing in patented siphon and vacuum breaker valves. With decades of engineering excellence, we deliver reliable, high-performance valve solutions for water systems, industrial plants, and infrastructure projects worldwide.

Our flagship HX-DP Siphon Breaker series is engineered to eliminate backflow within seconds, protecting pipelines from vacuum collapse and surge damage. Registered under patent ZL200520041922.3, our design ensures automatic synchronization with pump operations and extended standby reliability.

DN800
Max Diameter
12+
Global Projects
20+
Years Experience
SME Valve Installation

Our Product Range

From patented siphon breakers to precision industrial valves, SME offers a comprehensive portfolio engineered for performance, durability, and safety.

HXDP 100 Siphon Breaker

HXDP 100 Siphon Breaker

Vertical model DN100, electromagnetically sealed. Ideal for medium-scale pipelines requiring rapid air intake.

Patented
HXDP 250 Siphon Breaker

HXDP 250 Siphon Breaker

Vertical operation from DN100–250. Automatically synchronizes with discharge pumps for fail-safe operation.

Patented
HXDP 800 Siphon Breaker

HXDP 800 Siphon Breaker

World’s largest scale siphon breaker (DN800). Deployed in major infrastructure projects including Uzbekistan renewal program.

Flagship
HXQP Vacuum Breaker

HXQP Vacuum Breaker

Open-type pressure balancing model with solenoid actuation. Prevents vacuum formation in pipelines.

Industrial
Brass Ball Valve

Brass Ball Valve

Forged brass alloy construction with internal/external threads. Available in multiple lengths and sealing options.

Brass Series
Brass Check Valve

Brass Check Valve

Threaded swing, vertical non-return, Y-globe types with optional filters. Forged brass alloy for durability.

Brass Series
Forged Ball Valve

Forged Ball Valve

High-pressure rated forged construction. Suitable for oil, gas, and chemical applications.

Industrial
Knife Gate Valve

Knife Gate Valve

Designed for slurry and viscous media. Tight shut-off with minimal pressure drop.

Industrial
Bellow Seal Globe Valve

Bellow Seal Globe Valve

Zero leakage design with metal bellow seal. Ideal for hazardous and high-purity applications.

Industrial
Resilient Seated Gate Valve

Resilient Seated Gate Valve

Rubber-lined seat for tight sealing in water and wastewater systems. Corrosion-resistant body.

Water Control
Silent Check Valve

Silent Check Valve

Prevents water hammer with damping mechanism. Ideal for pump discharge lines.

Hydraulic
Pressure Relief Valve

Pressure Relief Valve

Protects systems from overpressure. Adjustable set point with fast response.

Hydraulic

Why Choose SME Valves?

Engineered for reliability, safety, and performance in the most demanding environments.

🔧

Patented Technology

Exclusive designs like HX-DP siphon breaker with automatic synchronization and fail-safe operation.

🌍

Global Applications

Deployed in water systems, industrial plants, and infrastructure projects across continents.

⚡

Instant Response

Breaks siphonic state within seconds, preventing backflow and vacuum collapse.

🏭

Full Manufacturing Control

In-house design, casting, forging, and testing ensure consistent quality and traceability.

800
Max Valve Size (DN)
12+
Major Projects Completed
2005
Patent Registered
1.6MPa
Max Brass Valve Pressure

Frequently Asked Questions

What is a siphon breaker valve?

A siphon breaker valve (like SME's HX-DP series) prevents backflow by introducing air into the pipeline when a siphonic condition occurs, breaking the vacuum and stopping reverse flow.

How does the HX-DP valve work?

Mounted at high points, it remains closed during normal operation. When pump stops and vacuum forms, the valve opens instantly to admit air, breaking the siphon effect.

Is the HX-DP valve patented?

Yes, SME's siphon breaker valve is patent-registered under ZL200520041922.3, featuring automatic synchronization and extended standby capability.

What sizes are available?

The HX-DP series ranges from DN100 to DN800, with the DN800 being the largest single-unit siphon breaker in the world.

Where are SME valves used?

Our valves are used in water supply systems, wastewater treatment, industrial processing, power plants, and infrastructure projects globally.

Get in Touch

For product inquiries, technical support, or project collaboration, visit our official website to reach the SME Valves team.

Contact Information

Phone (English): 86 (0)21 5878 0977

Phone: 86 (0)21 3422 0634

Email: [email protected]

Address: 2229 E. Weiqing Road, Shanghai 201508, China

Visit Official Website to Contact

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