Oil Tanker High Velocity Relief Valve

Oil Tanker High Velocity Relief Valve

1. Application

Oil Tanker High Velocity Relief Valve is usually designed to prevent the flame passage into cargo tanks and to relieve excessive over pressure or under vacuum of cargo tanks during cargo loading, discharging, ballasting and de-ballasting.

2. Material

valve body: cast steel

valve seat: stainless steel   0Cr18Ni9  SUS304

flame screen: stainless steel 00Cr17Ni14Mo2  SUS316L

The materials mentioned before are basic materials, ship-owners can choose better materials, such as SUS304, SUS304L, SUS316L.

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). High quality and reasonable price.

(2). Clearly visible vacuum disc operation.

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

6. IACS Certificate: CCS, ABS, BV, LR, RINA

7. The product of Oil Tanker High Velocity Relief Valve in the factory