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A411 breathing safety valve

Product Category:SAFETY VALVE
Product Name:A411 breathing safety valve
Product Tag:breathing safety valve
Update Date:2021/9/1 10:15:29
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Note: Our Products Can Be Customized According To Customers' Needs. In Addition To National Standards,We Can Design And Manufacture According To American Standards, Japanese Standards, German Standards, Russian Standards, British Standards And So On.

1. Introduction of A411XH breathing safety valve 

Breathing safety valve is a safety device used to install on light oil tank trucks and storage tanks. The function is to reduce the evaporation loss of oil products and protect the tank body from overloading. The hydraulic safety valve is a safety backup device for the (flap-type) breathing valve. Its inhalation and exhalation action pressure is slightly higher than that of the (flap-type) breathing valve. Once the breathing valve fails or its flap freezes in winter At this time, the liquid seal of the hydraulic safety valve is destroyed to protect the oil tank from damage. The hydraulic safety valve is a safety backup device for the (flap-type) breathing valve. Its inhalation and exhalation action pressure is slightly higher than that of the (flap-type) breathing valve. Once the breathing valve fails or its flap freezes in winter At this time, the liquid seal of the hydraulic safety valve is destroyed to protect the oil tank from damage.

2. Parameters of A411XH breathing safety valve: 

Product name: Breathing safety valve

Product model: A411XH

Product caliber: DN80-250

Product pressure: 0.1-2.5Mpa

Product material: cast steel, stainless steel, etc.

Product application: oil tanker

Control pressure: +200mm water column, -45mm water column

Please specify the product name, model and specifications when ordering.

3. The main shape and flange connection dimensions of the breathing safety valve:

Specification (DN)

Drawing number

Weight (㎏set)

Installation size (mm)

d

D

D1

D2

d1

L

H

n

80

GYA-80

38

Φ85

Φ150

Φ185

Φ125

Φ18

376

424

4

100

GYA-100

42

Φ105

Φ170

Φ205

Φ145

Φ18

500

605

4

150

GYA-150

66

Φ148

Φ225

Φ260

Φ200

Φ18

650

705

8

200

GYA-200

97.2

Φ210

Φ280

Φ315

Φ255

Φ18

900

755

8

250

GYA-250

140.0

Φ264

Φ335

Φ370

Φ310

Φ18

1050

885

12

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