High Velocity Relief Valve with gas freeing cover
1. Application
High velocity relief valve with gas freeing cover has been widely used in oil and chemical tanker ventilation systems. Its function is to ensure the safety of cargo tank structure and prevent overpressure or pressure loss; And control the fire, the danger of explosion and the safe discharge of the toxic cargo steam.
2. Material
valve body: cast steel
valve seat: stainless steel 0Cr18Ni9 SUS304
flame screen: stainless steel 00Cr17Ni14Mo2 SUS316L
We can according to customer demand for customized the material.
3. Nominal Size & Pressure
diameter：DN50—DN250
pressure:(1) oil tanker:-3.5Kpa to 14Kpa; (2) chemical tanker:-3.5Kpa to 20Kpa.
4. Features
(1). No peak pressure over opening pressure.
(2). Meet new IMO & MED requirements for cargo vapor flammability - MESG 0.9 & 0.65 mm.
(3). Variable application for usable installation vent pipe length and flow capacity range.
5. Specification(mm)
|
Serial No. |
DN |
D2 |
D1 |
D |
L |
H |
Flange Hole |
|
1 |
50 |
90 |
110 |
140 |
255 |
485 |
4xφ14 |
|
2 |
65 |
110 |
130 |
160 |
255 |
485 |
4xφ14 |
|
3 |
80 |
128 |
150 |
190 |
285 |
535 |
4xφ18 |
|
4 |
100 |
148 |
170 |
210 |
285 |
565 |
4xφ18 |
|
5 |
125 |
178 |
200 |
240 |
380 |
665 |
8xφ18 |
|
6 |
150 |
202 |
225 |
265 |
385 |
710 |
8xφ18 |
|
7 |
200 |
268 |
295 |
340 |
455 |
850 |
8xφ18 |
|
8 |
250 |
320 |
350 |
395 |
460 |
860 |
12xφ22 |
7. The product in factory
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