Marine Oil Tanker PV Valve High Velocity Pressure Vacuum Relief Valve Df150

• Media: Water
• Temperature: High Temperature
• Actuator: Manual
• Material: Stainless Steel
• Structure: Angle Type Globe Valve
• Sealing Form: Gland Packings Globe Valve
• Model NO.: SMT-PV
• Stem Thread Position: Outside Screw Stem Globe Valve
• Application: Cryogenic Globe Valve, Heat Preservation Globe Valve, Forged Steel Globe Valve
• Standard: DIN, GB, JIS
• Nominal Diameter: DN50 - DN400
• Condition: Water, Steam and Oil
• Working Pressure: 5K-10K
• Working Time: 10 Years
• Transport Package: Wooden Package
• Specification: Customizing
• Trademark: Original
• Origin: China
• HS Code: 84818040
• Production Capacity: 5000PCS/Year

Product Description

High Velocity P/V Valve
 
for cargo oil tank (or High Velocity P/V valve, for short) is 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 deballasting 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 deballasting 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.
 
Specification:
Material: Cast Steel or Stainless Steel
Flange Standard: GB, JIS, DIN, ANSI, BS
Opening Pressure of Vacuum Valve: -3.5kPa
Opening Pressure of Pressure Valve on the oil tank is 14kPa, on the chemical tank is 20kPa.
The opening pressure of the pressure may be different, but the differences of opening pressure and flow range is unapparent if the pressure valves have the same diameter.
* When the liquid cargo ships need to load the goods of the propylene oxide class, with the stainless steel high velocity P/V valve. The valve manufacturing materials for 304, 304L, 316L quality stainless steel, pressure valve opening pressure is generally set at 60KPa vacuum valve.

Detailed Photos

 

 

Product Parameters

 

Type	kPa Designed Openging Pressure		kPa Rated Working  Pressure		Velocity m/s	M3/h Flow Rate
	Pressure valve	Vacuum valve	Pressure valve	Vacuum valve		Pressure valve	Vacuum valve
DF50	14-21	-3.5	21.0	-7.0	>30	>300	>300
DF65						>400	>400
DF80						>600	>500
DF100						>800	>600
DF125						>1000	>800
DF150						>2500	>2200
DF200						>3000	>3000
DF250						>3500	>3000

 

 

 

 

 

FAQ

1.WHO ARE WE?
We are professional marine equipment supplier/exporter, new shipbuilding&ship-repair materials&outfittings soulution provider in Mainland, China.

2.WHAT CAN WE DO?
We have professional design team to help you solve problems of your vessel, we can recommend a set of solutions for your vessel to choose.

3.HOW TO ENSURE THE QUALITY?
Every equipment will be tested before leaving our factory, we can show you the video and testing report, also if go for marine classification society survey, we will have the product certificate showing all the testing result and approved.

4.WHAT CERTIFICATE DO YOU HAVE?
Our products can be issued of ABS, BV, CCS, DNV, GL, LR, RINA…etc, while BV and CCS are most common use and worldwide accepted certificate, every products can apppy for above certificate. 

5.HOW TO ENSURE INTERNATIONAL DELIVERY SECURITY?
Every cargo will be packed with appropriate package, also we have professional packing workers and forklifts to load and fix the cargo in container&air plane, ensuring the safety of sea/air transportation.

6.HOW ABOUT THE WARRANTY OF THE PRODUCTS ?
One year warranty-when the cargo arrived at your vessel we will keep providing service like Installation instructions and spare parts repairing in later using, we will always be there once you have any problems.