High Velocity Velief Valve with nate coating

High Velocity Velief Valve with nate coating

1. Application

High velocity velief valve with nate coating usually used in oil tanker and chemical tanker. The purpose of the high velocity valve is to provide automatic control of pressure differentials during liquid cargo ship loading,voyage,ballasting and de-ballasting without any manual operation. When the ship is carrying some high-strength corrosion products, the body of the high speed air valve should be coated with the corresponding anti-corrosion material.

2. Material

valve body: stainless steel
valve seat: stainless steel 0Cr18Ni9  SUS304
flame screen: stainless steel 00Cr17Ni14Mo2  SUS316L

The material of this product can be made to order, for example: cast steel, stainless steel 304, stainless steel 316L etc.

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). The valve body shall be coated with antiseptic material.

(2). Full lifting and high flow capacity.

(3). Reliable operations reduces vapor losses.

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: RINA, BV, LR, ABS, CCS.