Stainless steel ventilation cap floating disc for ballast tank

SUS304 stainless steel ballast tank air cap floating disc, ballast tank air cap float
With the air head / ballast tank air cap / oil tank ventilation cap defining vessel:
Oil tank air pipe head / pressure ballast tank ventilation cap is mainly used in all kinds of ships and offshore installations. Installation to terminate in the open deck above the oil / water tank of air / overflow tube at the top of, so that when the tank pressure is higher or lower than the atmospheric pressure to air or breath causes tank does not exceed the design pressure, and to prevent water and rain, insects and rats, so Mars into the tank. (as shown in the following illustration)

Ballast tank air cap float / air cap on buoy:
Stainless steel material molding ventilation cap float, bearing, wear, impact resistance superior performance and resistance to sea water, acid and alkali corrosive substances.
Ballast tank air cap float / air cap float principle:

When the oil tank air pipe head / ballast tank ventilation cap in the vertical position and tilt 40 degrees of immersed in water, stainless steel air cap float in instant floating, and the sealing seat contact, the sealing degree can effectively prevent a stream of water into the air / overflow pipe, delay tank influent time. After the ship back to normal condition, float automatic landing, recovery ventilation / suction function.
Ballast tank air cap float / air cap buoy installation notes:
Ship coating process, should avoid paint and dust enter inside the head tube, fouling filter, buoy, the guide bolt and a sealing seat, sealing performance and the sealing seat of float, float and flexible lifting.
Ballast tank air cap seal / air cap ring on:

Supporting air cap sealing seat by seawater, the corrosion of the oil substance made of rubber material, in - 30 DEG C to 100 DEG C under the environment of erosion is not easy deformation, hardening and embrittlement.
Ballast tank air cap float / air cap float material introduction:
Material: 00Cr18Ni10N GB/T1220-1992 (SUS304/316/316L)
Chemical composition% mechanical properties
C
Less than Mn
Less than Si
Less than or equal to
S
Less than or equal to
P
The yield strength of Cr is less than or equal to Ni
Sigma s MPa tensile strength
Sigma B MPa elongation
The 5% section shrinkage% psi hardness
HV
2 1 0.03 0.035 8.5 0.03
~ 11.517 ~ 19 = 245 = 550 = 40 = 50 = 220
Stainless steel guide bolt / air cap floating support bolt / air cap float stainless steel rod

Material: Qal9-2 GB/T4423-1992 specifications: diameter 5 ~ 40.
Mechanical properties of chemical composition%
Al Si Mn Zn Ni Fe Sn Pb P Cu impurity tensile strength
Sigma B MPa elongation
Delta 5% elongation
Delta 10%
8 0.1
~
1.5 100.1
~
2.5 1 0.5 0.5 0.03 0.01 1.7 more than 540 more than 16 margin of more than 13
When the marine air cap in the absence of all damaged, according to the ship by replacing the appropriate related accessories, air cap at this time, we can change with the:

Air pipe head Air Pipe head float air cap float float Air Cap Float
Cap Air Vent Disk air floating Float Air Vent floating air cap floating disc disk
Stainless steel float, stainless steel STAINLESS Steel FLOAT for overflow floating disc ballast
Ballast tank air cap Ballast tank air cap float floating disc
Ballast tank air cap Ballast tank air escape heads floating disc float
Air pipe head float, float Air Pipe head air cap Floating ball
Air cap floating disc sealing ring GASKET for overflow ballast supporting head
Air cap fire side cover Ventilation cap fire side cover
We produce stainless steel ballast tank vent cap float / stainless steel floating completely can apply to the following types:
Ballast tank air cap buoy - supporting CB/T3594-94 oil tank air pipe head
Ballast tank air cap buoy tank air pipe head - oil
Ballast tank air cap, floating plate supporting KS-91A9121R ballast tank air cap
FLOAT DISC FOR WABT AIR VENTS
Ballast tank air cap, floating plate supporting WBT type ballast tank air cap
WBT TANK ARIE VENT DISC FLOAT
Stainless steel ballast tank air cap float - supporting 533HFB type ballast tank air cap
STAINLESS STEEL FLOAT FOR OVERFLOW BALLAST HEAD NO.533HFB