Valve manufacturing company
Breathing valve
Home

Breathing valve

GFQ all weather breathing valve

GFQ all weather breathing valve

Overview of FQ all weather breathing valve: GFQ all-weather breathing valve is used on oil and liquid tank to remove the positive pressure and negative pressure gas in the tank, so that the liquid in and out of the tank is convenient. If there is no breathing valve on the tank, the liquid in and out of the tank has certain obstacles, which is likely to cause tank deformation and vibration. The product has reasonable design, simple structure and convenient use; It is an indispensable product of storage tank.

  • Item NO.:

    XUVAL77-51
  • Lead Time:

    45Days
  • Product Orgin:

    CHINA
  • Brand:

    XUVAL
  • Shipping Port:

    Shanghai
  • Payment:

    100%TT
  • Color:

    Blue
  • MOQ:

    10
Products Details

GFQ all weather breathing valve

Performance and characteristics:

The shell is made of cast iron, cast steel and aluminum alloy with good corrosion resistance; The valve disc is made of Teflon material, with good low temperature resistance and antifreeze performance; Simple structure, easy maintenance, safety and convenience; GfQ all-weather breathing valve performance fully conforms to the Ministry of petroleum industry standard SY7511-87.


Application scope of GFQ all weather breathing valve:
GFQ all-weather breathing valve is suitable for storage of class a oil products with flash point lower than 28 ℃ and class B oil products with flash point lower than 60 ℃, such as gasoline, Benben, Benben, kerosene, light diesel, engine oil, crude oil and other oil products with the same properties. It can be used with a new type of corrugated flame arrester.


Instructions for GFQ all weather breathing valve:
The breathing valve is installed on the top of the tank to solve the problem of positive pressure and negative pressure gas in the tank, so that the liquid in and out of the tank is not hindered. When the external liquid enters the tank, there is a large amount of gas to breathe out (called positive pressure). If the liquid in the tank is exported to the outside, the tank must be sucked into the tank from the outside air (called negative pressure). If the breathing valve is closed automatically when it stops working, the liquid and gas in the tank will not leak out, so that the liquid quality in the tank is guaranteed.


GFQ all weather breathing valve maintenance:
In order to ensure the safety of breathing valve, check whether the guide rod and valve disc are flexible before use. This valve should be checked regularly (within 6 months) to see if the positive and negative valve discs of the vent are flexible and if the contact surface of the valve disc is damaged. If there is any damage, it should be repaired immediately. After maintenance, everything is normal and can be reused.


GFQ all weather breathing valve parts materials:

Body material
Carbon steel WCB, stainless steel 304, 316, aluminum alloy
Positive pressure disc material
Stainless steel 304, 316, aluminum alloy
Negative pressure disc material
Stainless steel 304, 316, PTFE
Ambient temperature (℃)
-30~60


Main technical parameters of GFQ all-weather breathing valve:
Class a positive pressure
355Pa(36mmH2O)
Negative pressure
295Pa(30mmH2O)
Class B positive pressure
980Pa(100mm H2O)
Negative pressure
295Pa(30mmH2O)
Class C positive pressure
1765Pa(180mmH2O)
Negative pressure
295Pa(30mmH2O)


GFQ all weather breathing valve GB flange connection dimensions:
GB、JB

Specifications
Installation dimension (mm)
D1 D D3 H M-h
DN25 70 100 115 180 4×10
DN50 110 140 160 255 4×12
DN80 150 185 213 260 4×16
DN100 170 205 265 290 4×16
DN150 225 260 305 330 8×16
DN200 280 315 355 350 8×16
DN250 335 370 420 400 12×16


American standard flange connection all weather breathing valve dimensions:
ANSI, API and ASME are available for JIS standard

Specifications
Installation dimension (mm)
D1 D D3 H M-h
1" 79.5 108 115 180 4×15
2" 120.5 152 160 255 4×19
3" 152.5 190 213 260 4×19
4" 190.5 229 265 290 8×19
6" 241.5 254 305 330 8×22
8" 298.5 343 355 350 8×22
10" 362 406 420 400 12×25


Breathing valve classification:
The first one is to breathe or inhale when a certain pressure is reached; The other is designed as pure breathing without suction, which can be understood as two check valves with appropriate pressure instead. The second kind of breathing valve is similar to the one-way check valve. It can only exhale outward, but not inhale inward. When the pressure in the system rises, the gas will be vented outward through the breathing valve to ensure the constant pressure of the system. For tanks storing toxic substances, there is no breathing valve or activated carbon filter and other treatment devices. The breathing valve is generally used in atmospheric or low-pressure tanks, that is, only atmospheric and low-pressure tanks have breathing discharge, while high-pressure tanks have no discharge, no breathing loss and work loss. The main emissions of fixed roof tank are respiratory loss and work loss.


Selection of breathing valve:
1. For the requirements of installation position and temperature range, for example, all-weather breathing valve should be selected in cold area, and pipeline breathing valve should be selected for installation in pipeline. 2. The control pressure of mechanical breathing valve should be suitable for the pressure bearing capacity. 3. The specification of mechanical breathing valve shall meet the requirement of maximum oil breathing gas flow in and out of oil tank.


Product structure chart:



Packing & Delivery : 

Packing Details:all by seaworthy plywood case and packed strongly by packing belt as below
Delivery Details:Generally it is 5-10 days if the goods are in stock. or15-30 days if the goods are OEM or not
enough subject to the order quantity. But anyway, normally, we are able to make sure the delivery will not exceed 45days.





Send A Message

If you are interested in our valves and want to know more details,please leave a message here,we will reply you as soon as we can.

Related Products
Cast iron fixed proportional pressure reducing valve
Y43X fixed proportional pressure reducing valve

Overview of fixed proportional pressure reducing valve: The proportional pressure reducing valve has beautiful appearance, reliable quality, accurate ratio, stable operation, and reduces both dynamic pressure and static pressure. The valve uses the pressure difference generated by the different cross-sectional areas of the piston inside the valve body to change the pressure after the valve to achieve the purpose of reducing pressure. The pressure reducing ratio of the pressure reducing valve is: 2:1, 3:1, 4:1, 3:2, 5:2, etc.

Stainless steel butterfly valve
D973H D973Y three eccentric double clamp hard seal electric butterfly valve

Product use: D73H,D373H,D673H,D973H PN10 ~ PN100 three eccentric double clamp hard seal electric butterfly valve adopts precise J-shaped elastic seal ring and three eccentric multi-layer metal hard seal structure, which is widely used in metallurgy, electric power, petrochemical industry, water supply and drainage, municipal construction and other industrial pipelines with medium temperature ≤ 400 ℃ to regulate flow and carry off fluid.

Slow closing check valve
Stainless steel 300X Slow close check valve

Check valve can regulate the opening and closing speed. When the pump starts or stops running, it can be adjusted to the best opening or closing speed with the on-site adjustment.It is suitable for mining enterprises and high-rise buildings to reduce water hammer and water hammer in direct water supply and drainage system by water pump, so as to achieve the effect of safe closing.

Full diameter welded steel ball valve
Stainless steel full diameter welded ball valve

All welded ball valves are widely used in city gas, city heating, petrochemical, shipbuilding, steel, pressure regulating station, power plant and other pipeline equipment.

Metal ripple compensator
JJU Metal Rectangle Corrugated Compensator

The rounded rectangle compensator adopts rectangular section and rounded waveform. The single expansion joint in the pipeline bears two-dimensional displacement.The elbow joint pipe composed of two expansion joints can withstand three dimensional displacement.

Hex ball valve thread end
1-PC Hex ball valve thread end

A piece of internal thread ball valve and flange ball valve is the same type of valve, the difference in its close is a ball, the ball around the center line of the body for rotation to open, close a valve.The ball valve in the pipeline is mainly used to cut off, distribution and change the flow direction of the medium.Wide ball valve is a new type of valve widely used in recent years.

Cast iron rubber lined diaphragm valve
G41J rubber lined diaphragm valve

Product introduction: Rubber lined diaphragm valve is a special type of block valve, which appeared in 1920s. Its opening and closing part is a diaphragm made of soft material, which separates the inner cavity of the valve body from the inner cavity of the valve cover and the driving parts, so it is called diaphragm valve. The most prominent feature is that the diaphragm separates the inner cavity of the lower valve body from the inner cavity of the upper valve cover, so that the valve stem, disc and other parts above the diaphragm are not corroded by medium, and the packing sealing structure is omitted, and the medium leakage will not occur.

Cast iron ductile Butterfly valve
Cast iron wafer butterfly valve PN16

XUVAL centric wafer butterfly valves with fixed liner feature an outstanding seating concept. The rubber is injection molded directly on the valve body forming a permanent bond. Consequently, there is no risk of deformation or dislocation of the liner making the valves suitable under vacuum conditions. The combination of the profiled disc edge and the excellent XUVAL rubber quality ensures maximum durability of the liner.

Three-way plug valve
Three way internal thread plug valve

Three - way internal screw plug valve in the pipeline is mainly used for cutting, lifting and changing the direction of medium flow.

Copyright © 2021 Tonglu Yongxin Valve Co.,Ltd.All Rights Reserved. Powered by dyyseo.com

IPv6 network supported

IPv6 network supported

top

Send A Message

Send A Message

    If you are interested in our valves and want to know more details,please leave a message here,we will reply you as soon as we can.