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High Velocity Vent with ABS, CCS Type Approval Certificate


  • Standard

  • Pressure Reducing

  • Low Pressure

  • Pneumatic

  • Casting, Cast Steel, Stainless Steel, Cast Iron

  • Normal Temperature

  • liquid

  • 50-200

  • China (Mainland)

  • TQF

  • OEM

  • one year


  • CCS, ABS, BV

  • each piece with plastic bag, and the outside case is the plywood case.

  • 10-60days according to the quantity


High Velocity Vent:
1)good quality
2).with one year's warranty
3)with CCS, ABS Type certificate
4)Material: cast steel or SS


High Velocity Vent  with ABS, CCS Type Approval Certificate :


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.



Material: 316L,316,340, 20#, HT250

Flange Standard: GB, JIS, DIN, ANSI, BS

Opening Pressure of Vacuum Valve: -3.5kPa

Opening Pressure of Pressure Valve :14/21kPa.

Rating Working Pressure of Pressure Valve: 21Kpa

Rating working presssure of vacuum valve:-7Kpa

Efflux velocity: >=30m/s

Hydraulic Test Pressure: 0.345Mpa


The opening pressure of the pressure may be different, but the differences of opening pressure and flow range is inapparent if the pressure valves have the same diameter.