Valve

Valve

High-performance Valves For Flow Regulation And Boiler Protection

Industrial valves are critical devices used to control the direction, pressure, and flow of fluids (liquids, gases, powders ) in piping systems, ensuring safe and efficient operation.

Direction Control

Regulate the path of fluid flow, directing it as needed within the system.

Pressure Regulation

Maintain or adjust fluid pressure to ensure safe and optimal system operation.

Flow Management

Start, stop, or throttle the flow rate of various media through pipelines.

What is a valve?

What is a Valve?

A valve is a device that makes or stops the flow of media (liquid, gas, powder) in piping and equipment and controls its flow. Valves are crucial for creating complex piping networks that can efficiently transport various substances.

Industrial Valves are critical components designed to regulate, direct, or control the flow of fluids (liquids, gases, or slurries) in piping systems, ensuring leak-free operation and precise flow management. Complying with standards like ANSI, API, ASME, and GB, these corrosion resistant valves are made from materials such as stainless steel (AISI 304/316), titanium, nickel alloys, and bronze, offering robust boiler pipeline protection. Used in industries like petrochemical, water supply, power generation, and mining, they handle pressures from 0.0013 MPa to 1000 MPa and temperatures from -270°C to 1430°C, supporting applications from cryogenic LNG to high-temperature steam systems.

Ball Valves feature a pivoting, perforated ball for quick shut-off and precise flow control, ideal for oil and gas pipelines. Available in sizes from 1/4" to 48" (DN6 to DN1200), they support threaded, flanged, or welded connections. Butterfly Valves, with a rotating disc, provide efficient shut-off and throttling in water supply and HVAC systems, offering compact design and low flow resistance. Check Valves prevent backflow in pump and steam trap outlets, with swing, lift, or wafer designs ensuring one-way flow. Control Valves regulate flow, pressure, or temperature via adjustable passages, while Cryogenic Valves secure liquified gases like LNG at temperatures as low as -196°C. Gate Valves and Globe Valves offer linear or throttling control for water and steam systems, with globe valves providing better regulation but higher pressure loss.

Manufactured through forging, casting, or machining, industrial valves undergo rigorous testing, including hydrostatic, leakage, radiographic, and ultrasonic inspections, to meet standards like API 598 and GB/T13927. Stainless steel valves (AISI 316) resist corrosion in acidic or saline environments, while titanium and nickel alloys excel in extreme conditions like chemical processing. Surface treatments like passivation or ceramic lining enhance durability in abrasive or high-temperature applications, such as boiler tubing or slurry transport. Valves support manual, electric, pneumatic, or hydraulic actuation, with nominal diameters from DN6 to DN1400, catering to small-scale instrumentation or large-scale pipelines.

Compared to standard fittings, industrial valves offer precise flow control, backflow prevention, and pressure regulation, making them essential for dynamic systems. Certified by NSF/ANSI 61 for potable water or API 6D for pipeline safety, they ensure compliance with industry standards. Corrosion resistant valves like those in duplex stainless steel or Hastelloy handle corrosive media, while ceramic-lined or rare earth alloy valves resist wear in mining or power generation. Their versatility extends to maintenance, with designs allowing easy access for repairs. Sunny Steel’s white-glove service ensures timely delivery of high-quality valves tailored to engineering specifications.

Addressing challenges like fluid backflow, corrosion, and pressure fluctuations, Industrial Valves deliver reliable, efficient solutions for piping systems. Their robust construction, corrosion-resistant materials, and precise control mechanisms make them ideal for engineers seeking durable boiler pipeline protection. From water treatment to petrochemical refineries, these valves ensure safety, performance, and longevity in demanding industrial environments.

Types of Industrial Valves

Ball Valve

Uses a hollow, perforated, and pivoting ball to control fluid flow. Ideal for quick shut-off.

  • Quick shut-off
  • Tight sealing
  • Compact design
Gate Valve

Designed for on/off service, providing a clear passage when fully open. Minimal pressure drop.

  • On/off service
  • Clear passage
  • Suitable for slurries
Globe Valve

Used for throttling or regulating flow. Features a movable disc and a stationary ring seat.

  • Excellent throttling
  • Good shut-off
  • Flow regulation
Check Valve

Allows fluid to flow in only one direction, preventing backflow. Operates automatically.

  • Prevents backflow
  • Protects equipment
  • Automatic operation
Butterfly Valve

Used for isolating or regulating flow, with a disc that rotates on a shaft. Lightweight and compact.

  • Isolating/regulating flow
  • Lightweight, compact
  • Quick operation
Plug Valve

Quarter-turn valve using a cylindrical or tapered plug to stop or start flow. Simple design.

  • Quick shut-off
  • Simple design
  • Good for slurries
What is a valve?

General Standards of Valves

Organization Standard Description
ANSI American National Standards Institute General industrial standards
API American Petroleum Institute Standards for oil and gas industry
ASME American Society of Mechanical Engineers Boiler and pressure vessel codes
BS British Standards UK national standards
GB, JB, HG China Valve Standards Chinese national and industry standards

Valve Materials

We offer valves in a wide range of materials to meet diverse industry requirements. Additional grades are available upon request.

Stainless Steel
  • SS304, SS304L
  • SS316, 316L, 316Ti
  • SS317, 317L
  • 347SS, SS310
Super Stainless Steel
  • 904L
  • 254SMO
  • AL6XN
  • ALLOY20
Duplex & Super Duplex
  • S31803
  • S32750
  • S32760
Titanium Alloy
Gr.2, Gr.3, Gr.5, Gr.6, Gr.7, Gr.12
Nickel Alloy
Inconel 600, 625; Hastelloy B, B-2, B3, C276, C-22, C-4, G; Incoloy 800, 800H, 825; Monel 400, K500; Nickel 200, 201
Bronze
C95800, C95500, C95400, C63200
Zirconium Alloy
Zirconium 702, 705

Material Selection Guide

Material Main Properties Typical Applications
Carbon Steel High strength, cost-effective General industrial, water, oil & gas
Stainless Steel Excellent corrosion resistance Chemical, food, pharmaceutical
Alloy Steel High temperature & pressure resistance Power plants, refineries
Duplex Steel High strength, seawater resistance Marine, offshore, oil & gas
Nickel Alloys Extreme corrosion & heat resistance Chemical, aerospace, marine
Cast Iron Low cost, limited strength Low pressure water systems
Bronze & Brass Seawater resistance Marine, small valves

Industrial Applications

Oil & Gas

Upstream, midstream, and downstream operations, including drilling, refining, and transportation.

Chemical Processing

Handling corrosive and hazardous chemicals in various chemical plants.

Power Generation

Steam, water, and fuel systems in thermal, nuclear, and hydroelectric plants.

Water Treatment

Municipal water supply, wastewater treatment, and industrial water management.

HVAC

Heating, ventilation, and air conditioning systems in commercial and industrial buildings.

Pharmaceutical & Food

Sterile and hygienic applications, precise flow control in sensitive industries.

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