Top Flange Breathing Valve Supplier in China

Top supplier of top flange breathing valves in China. These valves are provided to anyone seeking a design that is durable and cannot leak, making them the most reliable pressure and vacuum relief of an equal standard for use in oil, gas, and chemical industries. Flange connections are made according to ANSI, DIN, and GB standards with sizes from DN50 to DN350, pressure setting against vacuum from -500Pa to +5000Pa. They are well known for their rugged construction; thus, valves do not let tanks implode or explode or contribute toward vapor loss, hence providing some satisfying level of safety. An excellent choice for atmospheric and low-pressure storage tanks with low maintenance requirements. These valves are made through the most advanced engineering technology and have attained ISO9001 and API certification; thereby providing longevity to the customer.

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Decades of Expertise

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Advanced Forging & Machining

Global Standards Compliance

What is a Flange Breathing Valve?

A Flange Breathing Valve is a specialized safety device used in storage tanks, pipelines, or other industrial systems to regulate pressure and prevent damage caused by overpressure or vacuum conditions. It is typically mounted on a flange connection and is designed to "breathe" by allowing air or gas to flow in and out of the system as needed.

What is a Flange Breathing Valve Used For?

Pressure and Vacuum Relief:It allows air or gas to flow in or out of the system to maintain safe pressure levels, preventing structural damage.
Protection of Storage Tanks:Commonly installed on tanks storing volatile or hazardous materials, it prevents tank collapse or rupture due to pressure changes.
Environmental Safety:Controls the release of vapors or gases, reducing emissions and ensuring compliance with environmental regulations.
Safety in Hazardous Environments:Used in industries like oil and gas, chemicals, and pharmaceuticals to safeguard equipment and personnel.

Why Choose Our Flange Breathing Valve?

Our flange breathing valves offer precise pressure regulation, durable materials, environmental compliance, and versatile applications for reliable industrial performance.

Superior Pressure Regulation

Our flange breathing valves are designed with precision to ensure optimal pressure and vacuum relief. This protects your storage tanks and pipelines from overpressure or vacuum-related damage, ensuring safe and efficient operations.

High-Quality Materials

Manufactured using durable and corrosion-resistant materials, our valves are built to withstand harsh industrial environments, providing long-lasting performance and reliability.

Environmental Compliance

Our valves are engineered to minimize emissions and control vapor release, helping your operations meet stringent environmental regulations while maintaining safety.

Versatile Applications

Suitable for a wide range of industries, including oil and gas, chemical processing, and pharmaceuticals, our flange breathing valves are adaptable to various operational needs, ensuring seamless integration into your systems.

What is the breather valve working principle？

Pressure and Vacuum Relief: The breather valve regulates internal tank pressure by opening to release excess pressure or allow air intake when vacuum occurs, preventing structural damage in oil, gas, and chemical storage tanks.
Spring-Loaded Mechanism: Equipped with adjustable springs, it activates at preset pressure or vacuum levels (e.g., -500Pa to +5000Pa), ensuring precise control and maintaining safe operating conditions under varying temperatures and fluid dynamics.
Pallet Design: Features a weighted or spring-loaded pallet that seals the valve under normal conditions, lifting only when pressure/vacuum thresholds are exceeded, thus minimizing vapor loss and enhancing safety.
Flame and Weather Protection: Incorporates flame arrestor elements and weather hoods, protecting against external ignition sources and environmental factors, making it suitable for hazardous environments as per API and ISO standards.

How to Choose the Right Flange Breathing Valve?

Determine Application Requirements: Assess tank type (e.g., oil, gas, chemical), operating pressure range (-500Pa to +5000Pa), and fluid properties to ensure compatibility, critical for safe pressure/vacuum relief.
Select Material and Standards: Choose corrosion-resistant materials like stainless steel or carbon steel, and verify compliance with ANSI, DIN, or GB flange standards, plus ISO9001/API certifications, for durability in harsh environments.
Consider Size and Flow Capacity: Match valve size (DN50 to DN350) and flow rate to tank volume and process needs, ensuring efficient operation and preventing overpressure or vacuum damage.
Evaluate Safety Features: Opt for valves with flame arrestors, weather hoods, and adjustable spring settings to enhance safety against ignition and environmental factors in industrial settings.

Flange Breathing Valve Dimensions Specifications Chart: ASME B16.5 Class 150

Nominal Size (DN)	Outside Diameter (OD)	Bolt Circle Diameter (BCD)	Number of Bolts	Bolt Hole Diameter	Thickness (T)
50	152 mm	120.7 mm	4	19 mm	14 mm
80	190 mm	152.4 mm	4	19 mm	16 mm
100	229 mm	190.5 mm	8	19 mm	18 mm
150	279 mm	241.3 mm	8	22 mm	20 mm

This table outlines key specifications for flange valves, including dimensions and bolt details for various NPS sizes.

Key Application Industries of Flange Breathing Valve

Oil and Gas

Regulates pressure in storage tanks, preventing explosions and vapor loss in refineries and terminals.

Chemical Processing

Ensures safe pressure control for hazardous chemical tanks, protecting against overpressure and vacuum damage.

Petrochemical

Maintains stability in volatile liquid storage, enhancing safety in production and transportation systems.

Pharmaceutical

Supports sterile tank environments, preventing contamination while managing pressure in manufacturing processes.

Why Choose Our Flange Valve?

Superior Durability: Crafted from high-grade stainless steel and carbon steel, resists corrosion, extreme temperatures, and wear, ensuring long-term reliability for industrial use.
Precise Pressure Control: Features adjustable spring settings from -500Pa to +5000Pa, offering exact pressure and vacuum relief to protect tanks from structural damage.
Industry Compliance: Adheres to stringent ANSI, DIN, GB, and ISO9001/API standards, ensuring top-tier quality and safety for global applications.
Enhanced Safety: Equipped with advanced flame arrestors, weather hoods, and leak-proof seals, safeguarding against ignition, environmental factors, and hazardous leaks.
Customizable Options: Available in sizes from DN50 to DN350, with tailored flange connections and configurations to meet diverse industrial requirements.

What Our Client Says

Understand from our clients what they say about doing business with us and the unique value addition we provide.

"The Flange Breathing Valve has been an excellent addition to our system. It is incredibly reliable and easy to operate, simplifying maintenance for our team. Highly recommended for anyone looking for a dependable solution to regulate pressure efficiently!"

James Peterson

Maintenance Supervisor

"The Flange Breathing Valve is incredibly dependable and has performed flawlessly under challenging conditions. Its ability to maintain precise pressure regulation has significantly enhanced the efficiency of our operations. A truly reliable and high-quality product that exceeded my expectations!"

Sarah Mitchell

Operations Manager

Comprehensive Guide to Flange Breathing Valve

How does a flange breather valve work?

Regulates tank pressure by opening to release excess pressure or intake air when vacuum occurs, using a spring-loaded pallet, preventing damage.

How to calculate flange breather valve size?

Determine tank volume, flow rate, and pressure/vacuum range (-500Pa to +5000Pa), then select size (e.g., DN50-DN350) based on manufacturer charts.

What is the standard for flange breather valve testing?

Follows API 2000 and ISO 28300 standards, testing for pressure/vacuum settings, leak resistance, and flame arrestor performance.

How to select a flange breather valve?

Consider application (e.g., oil, gas), material (stainless steel), size, compliance (ANSI/DIN), and safety features like flame arrestors.

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Harness years of experience, API-certified excellence, and bespoke engineering designs. Guarantee safety and accuracy for your industrial systems. Collaborate with us for top-tier flange breathing valves customized to your specifications and supported by trusted results.

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Frequently Ask Questions

Q: Why is a breathing valve with flame arrestor essential for industrial applications?

A: A breathing valve with flame arrestor provides pressure regulation while preventing flames from entering tanks or pipelines, crucial for safety in volatile environments.

Q: What are the different breathing valve types available on the market?

A: Breathing valve types include pressure-only valves, vacuum-only valves, combined pressure/vacuum valves, and breathing valves with flame arrestors or filters.

Q: How does a breathing valve filter improve operational efficiency?

A: The filter ensures clean airflow and protects the system from contamination, reducing maintenance needs and downtime.

Q: Can a breathing valve with flame arrestor handle high-pressure environments?

A: Yes, breathing valves with flame arrestors are engineered to withstand high-pressure conditions while ensuring safety and flame prevention.

Q: What should I consider when choosing between different breathing valve types?

A: Key factors include the application’s pressure range, environmental safety requirements, and whether features like filters or flame arrestors are needed.

Q: How do breathing valve filters protect industrial systems?

A: They block contaminants like dust and debris from entering tanks or pipelines, ensuring system integrity and extending equipment lifespan.

Q: Are breathing valves with flame arrestors suitable for chemical storage tanks?

A: Yes, they are ideal for chemical storage, where the risk of ignition or chemical reactions requires enhanced safety measures.

Q: Are different breathing valve types compatible with all storage tank systems?

A: Not all breathing valve types are universally compatible; selection depends on tank size, material, and operational requirements.