Custom Engineered Pneumatic Bellows Control Valve for Specific Process Requirements

• Customization: Available
• Temperature: Ordinary Temperature
• Certification: GS, CE, ISO9001, TUV
• Model NO.: Pneumatic Bellows Control Valve
• Media: Gas, Oil, Water
• Standard: API6d/ASME 150lb /JIS/DIN ISO 5211/Hg20592
• Connection Mode: Flange
• Power: Solenoid
• Material: Stainless Steel
• Type: Single Seater
• Nominal Diameter: 15-800mm
• Size: 169*84*43
• Service: Customizable
• Transport Package: Wooden Case Packaging
• Specification: Stainless steel
• Trademark: YUHONG
• Origin: China
• HS Code: 8481804010
• Production Capacity: 5000pieces/Month
• Package Size: 180.00cm * 90.00cm * 50.00cm
• Package Gross Weight: 100.000kg

Product Description

Product Parameters

 

Product Description

NO.1. Absolutely Reliable Sealing Performance (Core Advantage)
 

1.Achieves "Zero Leakage" at the Stem: This is the most central value of the bellows structure. Traditional stem packing seals inevitably allow minute escape of process media. The bellows, being a metal sealing element, completely isolates the valve stem from the process medium, entirely eliminating the possibility of leakage from the stem.

2.Protects the Environment and Personnel Safety: For toxic, hazardous, flammable, explosive, radioactive, or extremely expensive media, any minor leakage is unacceptable. The bellows seal provides the highest level of sealing assurance, ensuring production safety and environmental protection.

3.Maintains System Vacuum: In high vacuum systems, traditional packing seals can draw in air, compromising the vacuum. Bellows seals effectively maintain the vacuum integrity of the system.

NO.2. Excellent Regulation and Control Performance
 

1.High-Precision Control: Pneumatic actuators respond quickly, provide stable output force, and when paired with the valve trim (e.g., cage-style, V-port plug), enable continuous and precise regulation of process parameters like flow and pressure.

2.Seamless Integration with Automation Systems: By being equipped with a pneumatic positioner, they can receive standard signals (e.g., 4-20mA) from control systems, easily integrating into DCS or PLC systems for remote automatic control.

NO.3. Outstanding Durability and Long Service Life

1.Resistance to High Temperatures and Pressures: Metal bellows are typically made of stainless steel or high-temperature alloys, enabling them to withstand higher temperatures and pressures, making them suitable for more severe service conditions.

2.Corrosion Resistance: Bellows can be made from different corrosion-resistant materials (e.g., Hastelloy, Monel) based on the media characteristics, extending their service life in corrosive environments.

3.Anti-Fatigue Design: High-quality bellows are precision-designed and manufactured, tested for countless expansion/compression cycles, ensuring reliability under long-term reciprocating motion.

NO.4. Reduced Long-Term Maintenance Costs

1.Less Frequent Maintenance: By eliminating packing wear and leakage issues, there's no need for regular tightening or replacement of packing as required with standard valves, significantly reducing maintenance effort and costs.

2.Reduced Material Loss: For expensive process media, "zero leakage" translates directly into economic benefits by avoiding continuous loss of material.

 

NO.5. Safety and Reliability

1.Inherently Explosion-Proof: Pneumatic actuators use compressed air as the power source, requiring no electricity, giving them a natural explosion-proof advantage in flammable and explosive atmospheres.

2.Fail-Safe Position: Accessories like spring return can be configured to automatically move the valve to a fully open or fully closed safe position in case of air supply failure, preventing accidents.
 

NO.6. Intrinsically Explosion-Proof

1.Pneumatic operation requires no electricity

2.Complies with ATEX/IECEx explosion-proof certifications

3.Automatic fault reset function
 

Application Scenarios

In simple terms, the core value of pneumatic bellows control valves lies in solving the industrial challenge of requiring both precise control and absolute zero leakage.Their main application scenarios (high-risk, high-demand conditions) include:

1.Chemical and Petrochemical Industries: Highly toxic, explosive media (e.g., chlorine, phosgene, hydrogen), strongly corrosive media.

2.Oil and Gas Industry: Light hydrocarbons, liquefied natural gas (LNG), sour gas (containing hydrogen sulfide).

3.Pharmaceutical Industry: Processes involving Active Pharmaceutical Ingredients (APIs), requiring absolute sterility and contamination prevention.

4.Nuclear Industry: Radioactive media.

5.Vacuum Systems: Semiconductor manufacturing, space simulation chambers, etc.

Any application involving precise control of valuable or hazardous fluids
 

Company Profile

Production Process

FAQ

Q1.What is the Trade Term?
A1:Ex-work factory , FOB Guangzhou, FOB shenzhen, CIF

Q2. How long is the guarantee (period)?
A2:Three years quality warranty .

Q3.How many colors for selection ? 
A3:More than 30 colors. We will provide you the color card , pls choose your favorite from it.

Q4.How long is our Production leading time?
A4:within 15-20 days upon receive deposit in normal season, and 25-30days in our busy time(August,September,October).

Q5.What is the Payment term?
A5:T/T or L/C at sight. 30% Deposit for start the production ,the balance before the shipment when goods are ready.

Q6.What is the packing details?
A6:Knock down Packing with the carton boxes ,and inside with the pear cotton for protection. Glass parts are packed with
wooden frame outsides to protect the items.

Q7. What support you will have to assemble this furniture?
A7: Inside each packing of the office table products ,we have put the exactly instruction book ,you can assemble the office
table very easy .

Q8.What kind of documents we will provide to you?
A8:B/L,Commercial Invoice, Packing List,Certificate of Original. with these documents you or your borker can do the customs
declaration at your side.

Q9. During shipping, if there is a damage to products, how do you get replacement?
A9: During shipping,our shipping angancy will try to ensure the safety of the goods.If there is a damage to products, they would
be responsible for the damage .If it is not a very serious problems,we will help you and compensate you the damaged parts.

Q10. If there are any missing parts in our shipment, how long it takes for you to send?
A10: If there is some small missing components,we will DHL to you ASAP within one week.