Part Description:

1. Valve Cover; 2. Breathing Valve Body; 3. Fire-Extinguishing Valve Body; 4. Fire-Extinguishing Element; 5. Storage Tank Flange Connection; 6. Blow-Down Port; 7. Dust Cover; 8. Negative Pressure Valve Seat; 9. Negative Pressure Valve Stem Disc; 10. Valve Cover

I. Product Introduction

The AD1300+GZJI type flame arrester single suction valve is a safety device located at the top of atmospheric storage tanks. It maintains the pressure inside the tanks at a normal level, protecting them from damage caused by vacuum.

The AD1300 single-suction valve is a new product. Compared to the commonly used single-suction valves domestically, it offers a larger air flow volume, reduced flame arrester pressure, and better stability, often used in large storage and transportation projects.

It features the capability to connect to a nitrogen pipeline,吸入nitrogen to compensate for pressure loss in the storage tank. Additionally, it prevents carrying open flames into the storage tank when air is drawn in through the breathing valve, to avoid potential tank explosions.

Section II: Working Principle

When the pressure inside the tank falls below the set pressure of the single suction valve, the nitrogen being introduced will lift the vacuum valve disc, replenishing nitrogen into the tank to prevent pressure from dropping further, thus avoiding the collapse of the storage tank or equipment.

Section 3: Pressure Setting Range Activation

SY/T0511.1-2010----Section 1 of "Petroleum Storage Tank Accessories - Part 1: Breathing Valve" specifies the opening pressure of the breathing valve for atmospheric (including internal pressure) petroleum storage tanks as follows:

The 5 grades required by SY/T0511.1-2010 all feature a gravity-assisted breathing valve opening method.

In API 2000, the typical set pressure range for gravity-type breathing valves is -4.3 KPa to +6.9 KPa, while the set pressure for spring-loaded breathing valves must exceed this range.

Section 4: Product Advantages

1. Provide professional breathing valve calculations and CAD drawings based on the data sheet and operating conditions provided by the customer.

2. Eddie summarizes years of design and manufacturing experience, optimizing the sealing form of the breathing valve, sealing material, pressure setting points, flow coefficient, and return seat sealing. As a result, the breathing valve achieves zero-leakage sealing effect at 80% of the set pressure.

3. Utilizing a tower-type valve disk structure and imported FEP diaphragm technology, achieving a 10% overpressure technology.

4. FEP film sheets feature resistance to chemical corrosion, adhesion of liquids and vapors, extreme temperature, and bonding caused by valve seat freezing.

5. Prior to shipment, each unit undergoes a pressure and leakage test on the trial pressure platform. Upon passing, the units are released for production.

6. Carbon steel valve bodies are coated with anti-rust primer both inside and out, with an epoxy topcoat applied; stainless steel valve bodies are sandblasted; plastic valve bodies are polished.

7. Standard wooden crates are used for uniform packaging.

V. Relevant Standards for the Product

• API 2000-2014 ------- Ventilation Atmosphere and Low-Pressure Storage Tanks

• SY/T0511.1-2010 ---- "Petroleum Storage Tank Accessories - Part 1: Breathing Valve"

• SH/T3007-2014------"Design Code for Storage Tank Areas of Petroleum & Petrochemical Storage and Transportation Systems"

• GB50160-2018-------"Design Fire Protection Standard for Petroleum and Chemical Enterprises"

• GB5908-2005--------Fire-Extinguishing Device for Oil Storage Tanks

• ISO16852-------------- International Fire Resistor Test Standard