Submarine Using Pneumatic Rubber Hydro Fender
Product Introduction:
Submarines and other vessels which contact fenders below waterline require a unique solution. The pneumatic rubber hydro fender are specially adapted to this application. The fender body is partially water-filled, then pressurised with air and ballasted to make it stand vertically, fender draft and performance can be tuned by altering the water: air ratio and inflation pressure.
Feature of Pneumatic Rubber Hydro Fender:
1. The performance can be adjusted by changing the air-water ratio
2. The required draft can be adjusted
3. Low hull pressure
4. Self-regulation when the tide changes
5. Low installation and maintenance costs
Outer and Inner Rubber Material Requirements of Pneumatic Rubber Hydro Fenders
| Test item | Test method | Required value |
| Outer rubber | Inner rubber |
| 1. Before aging | – | – | – |
| 1.1 Tensile strength | ISO 37:2011 | 18 MPa or more | 10 MPa or more |
| 1.2 Elongation | ISO 37:2011 | 400 % or more | 400 % or more |
| 1.3 Hardness | ISO 7619-1:2010 | 60 ± 10 (Durometer hardness Type A) | 50 ± 10 (Durometer hardness Type A) |
| 2. After aging | ISO 188:2011 | Air oven aging, 70°C ± 1°C, 96 h | Air oven aging, 70°C ± 1°C, 96 h |
| 2.1 Tensile strength | ISO 37:2011 | Not less than 80 % of the original property | Not less than 80 % of the origi- nal property |
| 2.2 Elongation | ISO 37:2011 | Not less than 80 % of the original property | Not less than 80 % of the origi- nal property |
| 2.3 Hardness | ISO 7619-1:2010 | Not to exceed the original prop- erty by more than 8 | Not to exceed the original prop- erty by more than 8 |
| 3. Tear | ISO 34-1:2010 | 400 N/cm or more | No requirement |
| 4. Compression set | ISO 815-1:2008 | 30 %(70 ± 1 °C, 22hours) or less | No requirement |
| 5. Static ozone aging test | ISO 1431-1:2012 | No cracks after elongation by 20 % and exposure to 50 pphma at 40 °C for 96 h | No requirement |
| NOTE If the colour of the outer cover is not black, the material requirements will differ from those in this table. a Parts of ozone per hundred million of air by volume. |
Notice Of Fender Application And Storage
1. The fender pressure should be kept in the standard pressure ,within the rate of ± 5% range.
2. Often check the pressure , when the pressure drops, Inflate the fender in time, so as not to affect the normal use of the fender.
3. When connecting the fender with a steel wire rope, the wire rope should be fitted with a rubber sleeve to avoid damage to the fender
4. Do not touch the fender surface with the the sharp objects , to prevent piercing the fender. If the fender's surface is damaged, it will affect the lifespan of the fender.
5. When the fender is in normal use, the fixing points should be firm, prevent the detachment and wash away the fender. Suspension of the rope and hook ring should be connected orderly , can’t be in a mess.
6. If the fender won’t be used in a long time , to clean the fender surface with fresh water, and place the fender in a dry, cool, ventilated place, without direct sunshine.
7. When the fender is stored for a long time, the pressure should be reduced and the fender should be placed far away from the heat source.
8. Because the fender is rubber product, should try to avoid the fireworks, not contact with acid, alkali, oil and other organic solution
9. When the fender is stored, it shall not be folded or stacked, and don’t stack other objects on the fender.
FAQ:
Q1: What's the MOQ of your pneumatic rubber hydro fender ?
Answer: The MOQ is 1pc. Sample order is acceptable.
Q2: What's the lifespan of your pneumatic rubber hydro fenders?
Answer: Designed lifespan of our pneumatic rubber hydro fenders is 6 to 10 years
Q3: How long is your warranty period?
Answer: Our warranty period is 12 monthes.
Q4: What kind certificate you can provide.
Answer: We can provide ISO9001, SGS, CCS, BV, ABS. etc,
Product Tags:
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