Marine Class 150 Self Closing Valve
1. Introduction
A marine class 150 self-closing valve is a type of valve used in marine applications that is designed to automatically close in the event of a sudden drop in pressure or flow. This type of valve is commonly used in shipboard piping systems to prevent the accidental release of fluids such as fuel, oil, or water.
2. Material
(1) . - Body: bronze
(2) . - Stem: bronze
(3) . - Spring: steel
(4) . - Bonnet: bronze
(5) . - Disc: bronze
(6) . - Plug: bronze
(7) . - Sealing ring: poly tetra fluoro ethylene
(8) . - Packing: poly tetra fluoro ethylene
3. Nominal Diameter ＆ Pressure
Diameter: 15~40
Pressure: 150
4. Structural Features
The self-closing mechanism of the valve is typically achieved through the use of a spring-loaded mechanism or a weighted lever that is designed to close the valve when the pressure drops below a certain threshold. This helps to prevent the loss of valuable fluids and also minimizes the risk of environmental contamination in the event of a leak or spill.
5. Main Size List
|
NPS |
DN |
D |
C |
D2 |
T |
N-H |
L |
H |
|
1/2’ |
15 |
89 |
60.5 |
35 |
10 |
4-15 |
108 |
196 |
|
1’ |
25 |
108 |
79.5 |
51 |
11.5 |
4-15 |
127 |
220 |
|
1-1/2’ |
40 |
127 |
98.5 |
73 |
14.5 |
4-15 |
165 |
280 |
6. IACS Certificate: ABS, BV, CCS, DNV-GL, LR, RINA.
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