AIR VENT HEAD FOR TAIL PEAK CABIN AIR MODLEES125QT CB / T3594-1994, BODY CAST IRON, INTERNAL PARTS STAINLESS STEEL FLOAT

Marine air pipe head (with insect proof net) - marine water tank air pipe head (with insect proof net) - marine water tank ventilation cap (with insect proof net) - marine water tank air cap (with insect proof net) es125qt CB / t3594-94

Marine pontoon air pipe head (with insect proof net) - pontoon air pipe head of marine water tank (with insect proof net) - pontoon breather cap of marine water tank (with insect proof net) - air cap of marine water tank (with insect proof net) es125qt CB / t3594-94

Es type water tank air pipe head, pontoon type water tank ventilation cap.

The complete model of this air pipe head is es125qt CB / t3594-1994
E-type pontoon type, the flange is in accordance with gb2506 pn6, the body material is qt400 ductile iron, and the structural dimension is designed in accordance with the ship standard CB / t3594-1994.

This type of es125qt CB / t3594-1994 pontoon type water tank air pipe head shall be installed on the deck in accordance with the requirements of CCS Code:
1. After the ship's air pipe head is loaded, the pipeline shall be inspected under working conditions to ensure no leakage.
2. When this type of water tank air pipe head and water tank ventilation cap are installed on the main deck, the height shall be ≥ 760

3. The installation height of the tank ventilation cap installed on the forecastle deck shall be ≥ 450mm.
4. The wall thickness of the water tank air pipe head installed on the open deck shall be thickened according to the specification.
The above are the precautions for newly installing this type of water tank air pipe head.

When our ship is repaired again, if we need to replace this type of deck air pipe head, we need to pay attention to the following points:
1. It needs to be visually recognized that the air pipe head to be replaced is used in the upper compartment, oil tank or water tank or ballast tank and other empty tanks: the air pipe head of water tank and oil tank is similar in style, but the protective cover plates on both sides are different:

The upper openings of the side covers on both sides of the air pipe head of the water tank do not need to be closed, and the insect prevention net is built in; The upper openings of the side covers on both sides of the air pipe head of the oil tank shall be closed, and the fire protection net shall be built.

2. After determining the style and installation position, we need to verify the size of the connecting flange, including the outer diameter of the flange, the diameter of the flange center circle (center distance), the number of bolt holes and the diameter.
The common flange size of DN125 water tank air pipe head is as follows:

If it is impossible to measure or the existing air pipe head is severely corroded, we can also choose one butt welding flange for each air pipe head (as shown below):

We all know that there are many cabins on the ship. According to the summary, this es125qt CB / t3594-1994 air pipe head and water tank breather cap can be installed in the following cabins:

Water tank air pipe head, water tank ventilation cap, water tank air cap es125qt CB / t3594-1994
Forepeak air pipe head, forepeak ventilation cap, forepeak air cap es125qt CB / t3594-1994
Tail peak air pipe head, tail peak ventilation cap, tail peak air cap es125qt CB / t3594-1994
Ballast water tank air pipe head, ballast water tank vent cap, ballast water tank air cap es125qt CB / t3594-1994

Air pipe head - oil tank air pipe head (with fire net)
Pontoon type oil tank vent cap - pontoon type oil tank vent head (with fire net)
Model: ds65qt cb/t3594-94

Today, we will talk about the air pipe head in detail. We all know that there are many types of air pipe heads, including Japanese standard, European standard, national standard and so on.

Here we will give you a brief introduction to the DN65 specification in our national standard cb/t3594-1994 oil-water tank air pipe head:

This time, the welding flange corresponding to the connecting pipe on the ship has been welded. The outer diameter of the connecting pipe is 76mm, and the corresponding welding flange is 6 holes.
At this time, we check according to the customer's requirements and draw a conclusion:

DN65, flange outer diameter -155mm, flange center distance -123mm, bolt hole -6 holes *15mm
 

After we checked the flange size with the customer, the customer put forward another request. Considering the future maintenance, the customer emphasized:

The side cover, top cover and fasteners of this air pipe head are made of SUS316L material. In this way, the corrosion degree and maintenance frequency in the future will be reduced to a certain extent.

Secondly, after communication, the customer proposed that their air pipe heads were installed in various oil tanks, such as:

Vent cap of slop oil tank - pontoon air pipe head of slop oil tank (with fire screen) ds65qt cb/t3594-94
Ds65qt cb/t3594-94 cylinder oil tank air pipe head (with fireproof net)
Pontoon type oil tank vent cap with fire screen), engine room oil tank vent cap with fire screen) ds65qt cb/t3594-94
Fuel oil daily-use cabinet air pipe head with fire screen), fuel oil daily-use cabinet pontoon ventilation cap with fire screen) ds65qt cb/t3594-94
Ds65qt cb/t3594-94 oil tank pontoon air pipe head with fire screen), pontoon vent cap with fire screen)
Diesel cabin marine pontoon type self closing air pipe head with fire screen), pontoon type breathable cap with fire screen) ds65qt cb/t3594-94
Fuel oil settling tank stainless steel vent cap with fire screen) ds65qt cb/t3594-94
Fuel overflow tank pontoon vent cap with fire screen), pontoon air pipe head with fire screen) ds65qt cb/t3594-94
So at this time, this air pipe head needs to be made into an oil tank style - the upper opening of the side cover of the air pipe head is closed, and there is a fireproof net.
Now let's take a look at the details of this oil tank air pipe head and oil tank vent cap ds65qt cb/t3594:

Float type air pipe head - float type breathable cap - float type breathable cap MODEL:65A

Nominal diameter: 65mm Nominal pressure: 0.3Mpa Body material - cast iron inner part - stainless steel float Connection method - flange

Here, our company made a brief introduction to the DN65 air tube head GB and Japanese standard:

GB CB/T3594-1994 buoy type oil tank air head:
"Marine air pipe head / marine ventilation cap / marine air cap Air pipe head"

JIS-KS91A-121 Japanese standard 5K/10K oil tank breathable cap:

DN65 fuel tank air pipe head / fuel tank breathable cap, its flange size can be selected as follows:

Flange size 1: outer diameter 155mm center distance (eye distance) 123mm 6 holes
Flange size 2: outer diameter 160mm center distance (eye distance) 130mm 4 holes
JIS-5K: outer diameter 155mm center distance (eye distance) 130mm 4 holes
JIS-10K: outer diameter 175mm center distance (eye distance) 140mm 4 holes
DIN-16K: OD 185mm Center distance (eye distance) 145mm 4 holes
AISI-150LB: outer diameter 178mm center distance (eye distance) 139mm 4 holes

According to the customer's request, the marine oil tank air pipe head / marine oil tank breathable cap 65A, its custom material can be selected as follows:

HT200-Flanged cast iron air pipe head, flanged cast iron breathable cap 65A
QT400-15 ductile iron air pipe head, ductile iron ventilation cap 65A
SUS304 stainless steel vent cap 65A, stainless steel air tube head 65A, stainless steel air cap 65A