Stainless steel double aluminum pneumatic head flange metering butterfly valve

JN-DBRBFV-23 1001

Size: DN50-DN300
Grade: 304/316/316L
Standard: ANSI/DIN/GB/JIS
Working pressure: 1.0MPa-2.5MPa
Test pressure: 1.5MPa-3.75MPa
Temperature Range: -40℃~200℃
PTFE seals: Suitable for low-temperature, mildly corrosive media; wear-resistant, self-lubricating, and high-precision sealing.
Viton seals: Suitable for high-temperature, strongly corrosive media; oil-resistant, acid and alkali-resistant, anti-aging, and excellent high-temperature performance.

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Stainless steel double aluminum pneumatic head flange metering butterfly valve

The stainless steel double aluminum pneumatic head flange metering butterfly valve is a high-precision flange valve metering butterfly valve with a stainless steel body and double aluminum pneumatic heads. It features pneumatic drive, precise flow regulation, excellent sealing performance, and fast opening and closing response. Suitable for industrial media transportation pipelines in chemical, petrochemical, and water supply and drainage industries, it is often installed on main pipelines, branch pipe junctions, and key nodes in metering sections. Its core function is precise flow measurement, proportional regulation, and flow control under various operating conditions. Common types include 304/316 stainless steel models, atmospheric/medium pressure models, and PTFE/Viton sealing models to meet the metering and regulation needs of different media and operating conditions.

The core difference between this stainless steel double aluminum pneumatic head flange metering butterfly valve and ordinary butterfly valve lies in its high-precision metering and regulation combined with efficient actuation by dual aluminum pneumatic heads, rather than simply opening and closing. This results in higher flow control accuracy and faster pneumatic response. Compared to competitors, our product's advantages include a more corrosion-resistant and durable dual aluminum pneumatic head, a precision-forged stainless steel valve body, and a dual-material PTFE/Viton seal. Furthermore, the flange interface strictly conforms to universal standards, offering superior metering accuracy and sealing stability, making it suitable for long-term use under various operating conditions.

Accessories

Component & Material Table

Valve Body: 304/316/316L Stainless Steel (Precision Forging)
Valve Disc/Pad: 304/316 Stainless Steel (Mirror Polished)
Valve Stem: 2Cr13/316 Stainless Steel (Heat Treated)
Pneumatic Actuator: Double Aluminum Cylinder (AluminumAlloy Die Casting + Hard Anodizing)
Seals:PTFE/Fluororubber (Viton)
Flange Sealing Surface: Stainless Steel Hard Carbide Overlay
Fasteners:304/316 Stainless Steel

Product Parameter Details

Pressure:Working Pressure 1.0-2.5MPa, Test Pressure 1.5-3.75MPa
Functions:High-precision flow metering, proportional regulation, rapid start/stop, suitable for automated control systems
Grades:Chemical grade (standard), Sanitary grade (food/pharmaceutical grade, mirror polished)
Specifications: Compatible with DIN, ANSI, GB, and JIS standards
Grades:Sanitary grade (meets GMP standards); Safety grade (explosion-proof Ex d II BT4)
Installation:Horizontal installation preferred, vertical installation compatible (with anti-settling structure) available upon request
Customization: Supports non-standard size customization, function additions (positioner/solenoid valve), and small batch sample customization.

Stainless steel double aluminum pneumatic head flange metering butterfly valve

Feature (F)、Advantage (A)、Benefit (B)

Forged and Polished Valve Body, Corrosion and Shock Resistant：

F: The valve body is precision forged from 304/316L stainless steel, the valve disc is mirror-polished, free of sand holes and burrs, and the flow channel is integrally formed.
A:Improved corrosion resistance and resistance to media impact, no residue or scaling in the flow channel, strong pressure stability, and adaptable to complex media conditions.
B: Reduces the risk of valve leakage and pipeline blockage, extends valve service life, and reduces later maintenance and replacement costs.

Hard Anodized Dual Aluminum Pneumatic Actuator, Precise and Fast Response:

F:Dual aluminum pneumatic actuators are hard anodized, combined with a high-precision positioning structure and a dual-acting drive design.
A: The pneumatic actuator is anti-aging and wear-resistant, with high flow regulation accuracy, fast opening/closing/regulation response speed, and smooth operation.
B: Enables precise control of pipeline flow, improves production process stability, adapts to automated production lines, and reduces manual adjustment errors.

Dual Material Seals, Adaptable to Multiple Operating Conditions:

F: Dual-selectable seals (PTFE/Viton), PTFE self-lubricating, Viton temperature resistant and corrosion resistant, hard alloy overlay on sealing surface
A:High sealing fit with no leakage, suitable for high and low temperatures, strong and weak corrosion media, wear-resistant seals that are not prone to aging
B: Eliminates media leakage and loss, meets sealing requirements of multiple industries, eliminates the need for frequent seal replacement, and shortens downtime for maintenance

Tempered valve stem + anti-loosening and anti-leakage structure for safer operation:

F: The valve stem is made of 316 stainless steel with tempering treatment, integrated with the valve disc, and features an anti-loosening and anti-leakage stuffing box structure
A:High valve stem strength and resistance to deformation, no loosening of the connection, no leakage at the shaft end seal, and can withstand pipeline vibration and impact
B:Prevents valve failure caused by valve stem malfunction, prevents safety hazards caused by media leakage, and improves the overall operational safety of the pipeline

Multi-standard flanges + modular design for more flexible installation

F:Flange interface compatible with ANSI/DIN/GB/JIS Multi-standard, modular design, supports non-standard size customization
A:Strong installation adaptability, can directly connect to different specifications of pipelines, convenient disassembly and assembly, and can match personalized pipeline layouts.
B:enefits: Reduces installation adaptation and modification costs, shortens on-site installation time, flexibly adapts to different production lines, and facilitates easier future upgrades and modifications.

Stainless steel double aluminum pneumatic head flange metering butterfly valve

Interface Mode：Flange connection (compatible with ANSI/DIN/GB/JIS standards)

Production & Processing Method：CNC precision turning and milling of valve body/disc, precision die casting of pneumatic head, overall CNC assembly and debugging

Surface Treatment：Mirror polishing of valve body/disc (Ra≤0.8μm), electrolytic polishing of stainless steel, hard anodizing of pneumatic head, passivation of fasteners

Raw Material Processing Method：Valve body forged from 304/316L stainless steel, valve disc forged and precision ground from stainless steel, aluminum alloy die casting of pneumatic head, tempered and forged stainless steel valve stem

Usage:Pneumatic drive (double-acting pneumatic actuator, single-acting with reset optional)

Seal Ring Material Options：PTFE (polytetrafluoroethylene), Viton (fluororubber)

Sealing Method：Eccentric seal (bidirectional eccentric structure, improving sealing fit and wear resistance)

Stainless steel double aluminum pneumatic head flange metering butterfly valve

Feature (F)、Advantage (A)、Benefit (B)

Forged and Polished Valve Body, Corrosion and Shock Resistant：

F: The valve body is precision forged from 304/316L stainless steel, the valve disc is mirror-polished, free of sand holes and burrs, and the flow channel is integrally formed.
A: Improved corrosion resistance and resistance to media impact, no residue or scaling in the flow channel, strong pressure stability, and adaptable to complex media conditions.
B: Reduces the risk of valve leakage and pipeline blockage, extends valve service life, and reduces later maintenance and replacement costs.

Hard Anodized Dual Aluminum Pneumatic Actuator, Precise and Fast Response:

F:Dual aluminum pneumatic actuators are hard anodized, combined with a high-precision positioning structure and a dual-acting drive design.
A: The pneumatic actuator is anti-aging and wear-resistant, with high flow regulation accuracy, fast opening/closing/regulation response speed, and smooth operation.
B: Enables precise control of pipeline flow, improves production process stability, adapts to automated production lines, and reduces manual adjustment errors.

Dual Material Seals, Adaptable to Multiple Operating Conditions:

F: Dual-selectable seals (PTFE/Viton), PTFE self-lubricating, Viton temperature resistant and corrosion resistant, hard alloy overlay on sealing surface
A: High sealing fit with no leakage, suitable for high and low temperatures, strong and weak corrosion media, wear-resistant seals that are not prone to aging
B: Eliminates media leakage and loss, meets sealing requirements of multiple industries, eliminates the need for frequent seal replacement, and shortens downtime for maintenance

Tempered valve stem + anti-loosening and anti-leakage structure for safer operation:

F: The valve stem is made of 316 stainless steel with tempering treatment, integrated with the valve disc, and features an anti-loosening and anti-leakage stuffing box structure
A:High valve stem strength and resistance to deformation, no loosening of the connection, no leakage at the shaft end seal, and can withstand pipeline vibration and impact
B: Prevents valve failure caused by valve stem malfunction, prevents safety hazards caused by media leakage, and improves the overall operational safety of the pipeline

Multi-standard flanges + modular design for more flexible installation

F:Flange interface compatible with ANSI/DIN/GB/JIS Multi-standard, modular design, supports non-standard size customization
A:Strong installation adaptability, can directly connect to different specifications of pipelines, convenient disassembly and assembly, and can match personalized pipeline layouts.
B:enefits: Reduces installation adaptation and modification costs, shortens on-site installation time, flexibly adapts to different production lines, and facilitates easier future upgrades and modifications.

Stainless steel double aluminum pneumatic head flange metering butterfly valve

Interface Mode：Flange connection (compatible with ANSI/DIN/GB/JIS standards)

Production & Processing Method：CNC precision turning and milling of valve body/disc, precision die casting of pneumatic head, overall CNC assembly and debugging

Surface Treatment：Mirror polishing of valve body/disc (Ra≤0.8μm), electrolytic polishing of stainless steel, hard anodizing of pneumatic head, passivation of fasteners

Usage: Pneumatic drive (double-acting pneumatic actuator, single-acting with reset optional)

Seal Ring Material Options：PTFE (polytetrafluoroethylene), Viton (fluororubber)

Sealing Method：Eccentric seal (bidirectional eccentric structure, improving sealing fit and wear resistance)

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