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As a professional manufacturer with over 19 years of experience in the valve industry, Zhongguan Valve independently produces the 316 Grade Stainless Steel Butterfly Valve, a core component for opening, closing, and flow control in pipeline systems. Leveraging the excellent corrosion resistance of 316 stainless steel, it is widely used in various industries such as petroleum, chemical, metallurgy, and hydropower. This product employs a scientifically designed sealing structure, combined with sealing materials such as rubber and PTFE, to adapt to diverse operating conditions. Furthermore, we have optimized and upgraded to offer a triple-eccentric metal hard seal model, addressing the shortcomings of traditional products in withstanding high temperatures, high pressures, corrosion, and wear.
Zhongguan Valve's 316 Grade Stainless Steel Butterfly Valve is a core fluid control component for pipeline systems. Made primarily of 304 or 316 stainless steel, it uses a rotating valve plate to open, close, and regulate flow in pipelines. It features a compact structure, easy operation, and is suitable for various media and operating conditions. Based on industry needs and technological upgrades, we have launched a triple-eccentric metal hard-seal 316 Grade Stainless Steel Butterfly Valve, further expanding its application range and overcoming the limitations of traditional products in high-temperature, high-pressure, and highly corrosive conditions. Balancing practicality and durability, it has become a preferred procurement product for many companies in the fluid control field.
Compared to ordinary butterfly valves, the core advantage of the 316 Grade Stainless Steel Butterfly Valve lies in its material properties. Both 304 and 316 stainless steel have extremely strong corrosion resistance, effectively resisting the erosion of various media and extending the product's service life. Furthermore, we can flexibly select valve body and plate materials and sealing methods according to customer operating conditions, and combine them with different types of actuators to achieve multiple drive modes such as manual, electric, and pneumatic, comprehensively adapting to the usage needs of different industries. This is also one of Zhongguan Valve's core products that it focuses on promoting in the global market.
| Comparison Item | 304 Stainless Steel | 316 Stainless Steel |
|---|---|---|
| Alloy Composition | Contains 18%-20% chromium, 8%-10.5% nickel, ≤0.08% carbon (18-8 formula) | Contains 18%-20% chromium, 10%-14% nickel, 2%-3% molybdenum, ≤0.08% carbon |
| Mechanical Properties | Tensile strength: 515MPa; Yield strength: 205MPa; Elongation: 35% | Tensile strength: 550MPa; Yield strength: 215MPa; Elongation: 40% |
| Corrosion Resistance | Good corrosion resistance, suitable for weak corrosive media (such as water, air, weak acid and alkali) | Excellent corrosion resistance, molybdenum element enhances resistance to chloride ions, suitable for strong corrosive media (such as seawater, chemical solution) |
| Applicable Scenarios | Water treatment, HVAC, general industrial pipelines, food and beverage (non-strong corrosive media) | Chemical, pharmaceutical, shipbuilding, seawater systems, petroleum (strong corrosive media) |
| Cost | Relatively low, cost-effective | Higher than 304 stainless steel, suitable for high-demand working conditions |
I. Material and Process Advantages
- Superior Material Guarantee: The core components of the 304 or 316 Grade Stainless Steel Butterfly Valve are all made of industry-standard 304 or 316 stainless steel. The material undergoes rigorous testing, ensuring high purity and freedom from impurities. It possesses excellent corrosion resistance, wear resistance, and aging resistance, allowing for long-term use under various operating conditions, reducing replacement frequency and maintenance costs.
- Precision Manufacturing Process: Our company possesses a complete production and processing system. The valve body is manufactured using precision casting technology, and the valve plate and stem are CNC machined, ensuring high dimensional accuracy. Errors are controlled within industry standard ranges, ensuring precise assembly of all components and reducing operational wear. Surface treatment includes polishing and anti-corrosion treatment, enhancing the product's appearance and service life. Some models meet GMP hygiene standards.
- Optimized Structural Design: The triple-eccentric metal hard-seal model adopts an eccentric structural design. The valve seat sealing surface is welded with heat-resistant and corrosion-resistant alloy material, and the valve plate is equipped with multi-layer soft-stacked sealing rings, achieving frictionless opening and closing. Torque compensation sealing during closure improves sealing performance and solves the pain points of traditional butterfly valves, such as poor resistance to high temperatures, high pressures, and corrosion. Streamlined flow channel design reduces flow resistance and improves fluid control efficiency.
II. Performance Advantages
- Reliable Sealing Performance: Flexible selection of soft or hard seals according to operating conditions. Soft seal ratings can reach ANSI Class VI, and hard seal ratings can reach ANSI Class IV. Low leakage rate ensures no media leakage when the valve is closed, guaranteeing stable operation of the pipeline system. The sealing rings are made of high-quality materials, wear-resistant, high-temperature resistant, and have a long service life.
- Convenient and Flexible Operation: Supports multiple drive methods including manual, electric, pneumatic, and hydraulic. Manual operation is easy, while electric and pneumatic operation can achieve automated control, adapting to different operating scenarios. The valve stem is equipped with a self-lubricating bearing, ensuring smooth opening and closing without jamming, enabling rapid opening and closing and improving operating efficiency.
- Wide Applicability: Available in 304 and 316 stainless steel, with flexible customization of sealing, actuation, and connection methods. Diameters range from DN40 to DN1600, suitable for various operating conditions including normal temperature, high temperature, low pressure, high pressure, weak corrosion, and strong corrosion, covering the needs of multiple industries.
- Stable and Durable Structure: The valve body features an optimized design with uniform wall thickness, strong load-bearing capacity, and a burst pressure exceeding four times the nominal pressure. Core components are made of superior materials with high machining precision, resulting in a long mean time between failures (MTBF) and adaptability for long-term continuous operation.
III. Safety and Environmental Advantages
- Safety Performance Meets Standards: The actuator can be equipped with explosion-proof and overload protection devices, suitable for flammable, explosive, and high-pressure environments, avoiding safety hazards during operation. The valve stem seal is tight, preventing media leakage and reducing harm to the environment and operators.
- Green and environmentally friendly design: The product materials are recyclable and meet environmental protection requirements; low flow resistance reduces energy consumption of power equipment such as pumps and fans, achieving energy saving and consumption reduction; the sealing materials are free of toxic and harmful substances, making them suitable for industries with high requirements for media cleanliness, such as food and pharmaceuticals.
- Optional fire-resistant design: Some models can be equipped with a fire-resistant sealing structure, certified by API 607 or ISO 10497, maintaining a basic seal in the event of a fire, reducing the risk of accident escalation, and improving the safety of the piping system.
| Parameter Item | Specification |
|---|---|
| Product Name | 304 Or 316 Grade Stainless Steel Butterfly Valve |
| Body Material | 304 Stainless Steel, 316 Stainless Steel |
| Valve Plate Material | 304 Stainless Steel, 316 Stainless Steel |
| Valve Stem Material | 304/316 Stainless Steel |
| Nominal Diameter (DN) | DN40 - DN1600 |
| Nominal Pressure (PN) | PN10, PN16 |
| Sealing Type | Soft Seal (Rubber, PTFE), Metal Hard Seal |
| Sealing Level | ANSI Class IV (Metal Seal); ANSI Class VI (Soft Seal) |
| Operating Temperature | -40℃ - 200℃ (Soft Seal); -196℃ - 600℃ (Metal Seal) |
| Connection Type | Wafer, Lug, Flange, Welding |
| Drive Mode | Manual (Handle, Worm Gear), Electric, Pneumatic, Hydraulic |
| Explosion-Proof Grade | Ex dⅡBT4 (Pneumatic Type) |
| Standard Certification | API, ANSI, ISO, GB/T 12238 |
| Flow Resistance Coefficient | ζ≤0.3 |
