About Jiahe - Experienced Valve Manufacturer with Technical Partnerships

Henan Jiahe Wanfeng Industrial Co., Ltd. cooperates with many science and engineering colleges in China. It is a high-tech enterprise focusing on the research and development, production and sales of intelligent industrial products. Its headquarters is located in Kaifeng City, Henan Province, China. The company is committed to providing customers with high-quality valves, graphite electrodes and isostatic graphite products, which are widely used in power plants, petrochemicals, energy, metallurgy, aerospace and other fields. With many years of industry experience and technical accumulation, we have become a trusted partner of domestic and foreign customers. Our products have won the recognition of global customers with excellent performance, reliable quality and competitive prices.

Core products

Valve Products

Product Types: Ball valves, gate valves, globe valves, butterfly valves, check valves, control valves, safety valves, pressure-reducing and temperature-reducing valves, etc. Application Fields: Petrochemical, water treatment, energy, power generation, etc. Product Advantages: Made of high-quality materials, resistant to corrosion, high temperatures, low temperatures, and high pressure. Compliant with international standards (e.g., API, ANSI, DIN, etc.).

01

Globe Valve

Working Principle: Cuts off or regulates fluid flow by moving the disc along the valve seat centerline. The valve closes when the disc contacts the seat and opens otherwise. Application Scope: Suitable for steam pipelines, compressed air systems, and chemical pipelines. Can be used for both cutting off and regulating flow, but with limited precision. Performance Features:
Reliable sealing performance, suitable for high-pressure applications.
Higher flow resistance, with the medium typically flowing “low in, high out.”
Shorter disc travel during operation, requiring less effort.

02

Check Valve

Working Principle: Automatically opens or closes the disc based on medium flow to prevent backflow. The disc opens when the medium flows in the correct direction and closes when reversed. Application Scope: Installed at pump outlets, boiler feedwater pipelines, and positions where backflow prevention is needed, such as in fire protection and water supply systems. Performance Features:
Operates automatically without manual intervention.
Available in types like lift and swing check valves; swing valves are suitable for large diameters, while lift valves offer better sealing.
Flow resistance varies by type and may cause water hammer effects.

03

Control Valve

Working Principle: Precisely regulates fluid flow, pressure, temperature, and other parameters by controlling the valve core position using actuators (e.g., electric or pneumatic). Application Scope: Widely used in industrial process control in industries like chemical, petroleum, metallurgy, and power generation, such as regulating pipeline medium flow or controlling reactor pressure.
Performance Features:
High regulation precision, enabling continuous adjustment.
Requires a supporting control system and has a relatively complex structure.
Different types (e.g., single-seat and double-seat) are suitable for various conditions, such as high-pressure differential or high-flow scenarios.

04

Ball Valve

Working Principle: Controls fluid flow by rotating a ball with a circular through-hole 90° around the valve stem axis. Offers extremely low flow resistance when fully open. Application Scope: Suitable for natural gas pipelines, petroleum refining, and water treatment. Can be used for quick opening/closing and regulation (e.g., V-ball valves).
Performance Features:
Rapid opening/closing, easy operation, and capable of automated control.
Excellent sealing performance, suitable for media with particles or corrosive media.
Low flow resistance and strong flow capacity.

05

Butterfly Valve

Working Principle: The disc (butterfly plate) rotates around the valve stem axis, controlling fluid flow by adjusting the rotation angle. A 90° rotation achieves full open or closed positions. Application Scope: Commonly used in large-diameter water supply and drainage pipelines, ventilation and air conditioning systems, and water treatment projects. Suitable for low-pressure, high-flow scenarios.
Performance Features:
Simple structure, compact size, lightweight, and cost-effective.
Fast opening/closing with low operating torque.
Moderate sealing performance, unsuitable for high-pressure or high-viscosity media.

06

Safety Valve

Working Principle: Automatically opens to discharge medium when the pressure in equipment or pipelines exceeds the set value and closes when the pressure drops, providing safety protection. Application Scope: Installed on boilers, pressure vessels, and pipelines to prevent accidents caused by excessive pressure.
Performance Features:
Sensitive operation with stable discharge and reset pressures.
Requires regular calibration to ensure reliability.
Available in full-lift and partial-lift types; full-lift valves offer higher discharge capacity, suitable for gas media.

Summary Comparison

Valve Type	Working Principle	Typical Application Scenarios	Key Performance Advantages
Gate Valve	Gate raises/lowers to cut off flow	Long-distance pipelines, large diameters	Low resistance, good sealing
Globe Valve	Disc moves along axis to regulate flow	Steam systems, chemical pipelines	Reliable sealing, adjustable
Check Valve	Medium flow auto-opens/closes disc	Backflow prevention (pump outlets)	Auto-operation, prevents backflow
Control Valve	Actuator controls valve core position	Industrial process parameter control	High precision, needs control sys.
Ball Valve	Ball rotates to open/close flow	Natural gas, corrosive media	Good sealing, low resistance, fast
Butterfly Valve	Disc rotates to regulate flow	Large-diameter low-pressure pipelines	Simple structure, cost-effective
Safety Valve	Opens at pressure threshold	Boilers, pressure vessels	Safety protection, auto-relief

The above valve products can be customized according to customer requirements.

Graphite Electrodes and Isostatically Pressed Graphite Products

Product Types: Graphite electrodes, isostatically pressed graphite, graphite molds, etc. Application Fields: Metallurgy, electronics, semiconductors, photovoltaics, etc.
Product Advantages:
High purity, density, strength, and power capacity (including ultra-high power).
Excellent electrical conductivity and high-temperature resistance.

01

Brief Introduction to Ultra-High Power Graphite Electrodes (UHP Graphite Electrodes)

Application Scope Mainly used in electric arc furnaces (EAF) and ladle refining furnaces (LF), suitable for:Steelmaking: Scrap melting, alloy steel production.Special materials: Ferrosilicon, phosphorus yellow, etc., in high-energy-consumption industries.High-temperature scenarios: Industrial furnaces requiring rapid heating (≥3000°C).

Comparison with Standard Electrodes Current Density: UHP electrodes allow ≥25 A/cm² (standard electrodes18 A/cm²).Lifespan: UHP electrodes have a lower consumption rate (~1.5 kg/ton of steel) and save over 20% energy compared to standard electrodes.Note: Must match high-power transformers to avoid overload leading to breakage! Custom sizes and specifications can be provided based on customer requirements.

Quality control of products supplied by the company

Our company implements quality supervision and inspection of all ordered products from raw materials to finished product packaging and delivery, and designates a third party to conduct full-process supervision according to customer requirements: to ensure that every link of the product from raw material procurement to production and delivery meets international standards.

Henan Jiahe Wanfeng Industrial Co., Ltd. has provided high-quality products and services to customers in many countries and regions around the world, some of which include: Petrochemical industry: Cooperate with a large oil company in the Middle East to provide high-pressure valve products. Metallurgical industry: Supply graphite electrodes to a European steel company to help it improve production efficiency. Electronics industry: We provide isostatic graphite products to a semiconductor manufacturer in Southeast Asia to meet their high-precision processing needs. We will work hand in hand with global customers to create a better future with high-quality products, professional services and innovative spirit!

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CONTACT: Kaifeng City, Henan Province, China; hnkf1101@163.com; +86 13937811971

Looking forward to a win-win partnership!