Product Details
Pneumatic flange gate valve
Product Introduction
Automated shut-off valve with flange body, disc, seat, stem, pneumatic actuator & control accessories.
Compressed air-powered (solenoid valve for airflow control) drives stem-disc linear motion to open/close fully. Optional positioner accepts 4-20mA signals for precise flow regulation. Flange connection ensures stable sealing; fast response, suitable for industrial pipeline automation.
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Product Detail
I. Product Parameters
1. Material Parameters
• Valve Body / Valve Cover / Valve Disc: Cast steel (WCB, for standard operating conditions), stainless steel (304/316, for corrosion-resistant operating conditions), chrome-molybdenum steel (WC6/WC9, for high-temperature and high-pressure operating conditions)
• Sealing Surface: Stainless steel hard alloy overlay (wear-resistant and corrosion-resistant), PTFE soft seal (low-pressure seal)
• Valve Stem: 2Cr13 stainless steel, 304 stainless steel (corrosion-resistant)
• Pneumatic Actuator: Cast aluminum housing (lightweight and rust-proof), optional stainless steel housing (for highly corrosive environments)
2. Specification Parameters
• Nominal Diameter: DN15~DN300 (corresponding to 1/2"~12")
• Nominal Pressure: PN16, PN25, PN40, PN63 (suitable for medium and high-pressure pipelines)
• Connection Method: Flange connection (GB/T, ANSI, DIN, etc. standards)
• Air Source Pressure: 0.4~0.7MPa (compressed air driven)
3. Control and Operating Parameters
• Actuator Type: Double-acting (holds position upon loss of pressure), Single-acting (spring return, returns to position upon loss of pressure)
• Control Accessories: 2-position 5-way solenoid valve, limit switch (feedback valve position), electric positioner (regulating type, receives 4-20mA signal)
• Protection Rating: Actuator IP65, optional IP67 (high protection)
• Explosion-proof Rating: Optional Ex d II BT4/CT6 (suitable for flammable and explosive environments)
• Operating Temperature: -29℃~425℃ (WCB material); -20℃~180℃ (PTFE soft seal)
II. Product Advantages
• High degree of automation: Supports remote control and linkage with PLC/DCS systems, eliminating the need for manual on-site operation, reducing labor costs, and adapting to unattended production lines.
• Excellent sealing performance: Hard-seal models are wear-resistant and high-pressure resistant, while soft-seal models offer zero leakage, meeting the sealing requirements of different operating conditions.
• High safety redundancy: The single-acting actuator has an automatic reset function in case of air loss. In the event of a sudden air interruption, the valve automatically opens or closes fully, preventing uncontrolled flow of the pipeline medium.
• Stable installation and strong adaptability: High flange connection strength, suitable for medium and high pressure pipelines; multiple materials are available to cover complex working conditions such as conventional, corrosive, high temperature and high pressure.
• Convenient maintenance: The actuator and valve body adopt a flange connection, making disassembly and separation convenient; the only vulnerable parts are the sealing surface and packing, resulting in low replacement costs.
III. Product Applications
• Petrochemical industry: Pipelines for conveying crude oil, refined oil, and chemical solvents; explosion-proof models are suitable for fluid cutoff and flow regulation in flammable and explosive workshops.
• Power energy industry: Steam pipelines and boiler feedwater pipelines in thermal power plants; high temperature and high pressure models can withstand harsh working conditions.
• Pharmaceutical and food industry: Pharmaceutical pure water systems and food and beverage processing pipelines; stainless steel models meet sanitary standards, eliminating the risk of media contamination.
• Metallurgy and mining industry: Smelting fluid pipelines in metallurgical workshops and high-pressure water supply systems in mines, enabling automated on/off control of fluids.
• Municipal engineering industry: Urban gas transmission and high-pressure water supply and drainage pipelines, used for zoned control and maintenance isolation of pipeline networks.