Pressure Vacuum Valve - China

Marine PV valve(pressure/vacuum valve for cargo oil tank)is also called as high-velocity relief valve, high velocity P/V 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 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, also, it provides auto-protection against fire and explosions on deck.

Additionally in the event that the inert gas system can not supply gas promptly, the vacuum valve can auto open to protect the tank against excessive vacuum when de-ballasting on dock.

Normal, when the pressure risen in tank because of temperature or loading, the pressure valve open automatically and vent gas.

When the pressure of tank come to pressure differentials, the vacuum valve or pressure valve all can be automatic resetted.

If an ignition occurs outside the tank space, the flames will be quenched in the flame trap.

Model Opening pressure

(kPa) Rated working pressure

(kPa) Flow rate

(m3/h) Outlet air flow velocity of pressure valve(m/s) Pressure valve Vacuum valve Pressure valve Vacuum valve Air removal cover Pressure valve Vacuum valve Gas free cover DF50 14.0-21.0 -3.5-7.0 21.0 -7.0 2.0 ＞350 ＞350 ＞250 ＞30

DF65 14.0-21.0 -3.5-7.0 21.0 -7.0 2.0 ＞350 ＞350 ＞250 ＞30

DF80 14.0-21.0 -3.5-7.0 21.0 -7.0 2.0 ＞600 ＞600 ＞400 ＞30

DF100 14.0-21.0 -3.5-7.0 21.0 -7.0 2.0 ＞800 ＞600 ＞400 ＞30

DF125 14.0-21.0 -3.5-7.0 21.0 -7.0 2.0 ＞1500 ＞1500 ＞1000 ＞30

DF150 14.0-21.0 -3.5-7.0 21.0 -7.0 2.0 ＞2000 ＞2000 ＞1000 ＞30

DF200 14.0-21.0 -3.5-7.0 21.0 -7.0 2.0 ＞3000 ＞3000 ＞2200 ＞30

DF250 14.0-21.0 -3.5-7.0 21.0 -7.0 2.0 ＞3500 ＞3000 ＞2200 ＞30

Company Contact:

• Posted By: Taixing Hongyuan CNC Machine Tool Co.,Ltd

• Phone: +86-13951157652

• Address: Daiwang Road, East Industrial Park, Taixing , Jiangsu , China

• Email:

• Business Description: Taixing Hongyuan Machinery Co., Ltd, located in Taixing, Jiangsu, is the top ranked and experienced machinery manufacturer and supplier in China, whose series of high quality CNC machinery, machine tools, mechanical & electric equipments are widely used in the field of metalworking, shipbuilding, oil industry etc.
  
  Established in 2003, and spread its business to over 30 countries
  
  Our main product :
  
  1 - CNC pipe threading lathe, drill pipe hardbanding machine, drill pipe repair machine, CNC spiral groove milling machine etc, this series machineries are mainly used in petroleum, gas industry for manufacturing and processing hardbanding, thread products, on oil tubing, casing, drill pipe, drill collar, tool joint, and coupling etc.
  
  2 - CNC gas/plasma cutting machine， Wire rope swaging machine
  
  3 - High velocity relief valve (pressure/vacuum valve) for oil tanker and chemical tanker
  
  
  
  With over 10 years of combined knowledge and expertise, our team is staffed with skilled people that our customers can count on, provide innovative and cost effective solutions to customer needs.