JIS MARINE VALVE

. Application

The pressure vacuum valve generally used in the relief system of the oil tanker and chemical tanker according to the current regulations:IMO and IBC. The purpose of the pressure vacuum valve is to provide automatic control of pressure differentials during liquid cargo ship loading, voyage, ballasting and de-ballasting without any manual operation, also, it provides auto-protection against fire and explosions on desk.

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). Variable application for usable installation vent pipe length and flow capacity range.

(2). Reliable operations reduce vapor losses.

5. Specification(mm)