Our annual export volume is 10 million, the main export countries are Indonesia, Vietnam,the United States , we provide ABS , BV , DF ,RS certification and provide and issue free third-party testing report, we have cooperated with Evergreen Marine Indonesia,Arpeni Pratama Ocean Line. PT and other companies.
In order to help you better purchase the products you need,We will introduce our products to you as follows:
Our PV valve go through 42 processes from raw materials to finished products
The dimesion parameter of the PV valve
When loading of the ship some goods to high-strength corrosion,inside the high-velocity relief ventilation valve body shall be coated with the anti-corrosion material.
If the ship Design&Research Institutes and ship-owners want to as semble both gas-freeing cover and some other accesspries on the high-velocity relief valve,the gas-freeing cover can fix on the branch of the high-velocity valve or branch of vent pipe as the gas freeing cover is a separated one.
According to the regulations of MSC/Circ 677 the gas-freeing cover can prevent the flame into the tank while the gas-freeing cover meets to the demands of the pressure/vacuum valve.Shell,upper cover and flame screen(flame retardant bed)constitube gas-freeing cover.It can directly assemble on the vacuum valve of the high-velocity relief valve.
It is necessary to treat some special chemicals specially while loading and sailing.Some cannot leak during the sailing.It can ensure the"zero leakage".After assemble forced-closing device on the CF-ISO high-velocity relief valve.Of cuurse, the forced-closing device will work while it is necessary.
In accordance with the requirements of ISO15364,if the ship is constantly navigating in poor ice conditions may be produced by vapor condensation and crystallization of the goods,
pressure/vacuum valves required the preparation of the heating device,
heating device is to rely on the ship supply steam to achieve.Simple structure of the heating device,
heating,direct,rapid,and can be
used for less than 1.2MPa superheated steam and thermal
fluid heating cycle.
According to the IMO and IBC,two ventilation devices or one ventilation device and one liquid pressure sensor shall be assembled on each cargo oil tank to make sure the tank will not over-pressure or low-pressure while one of them does not work.
Such ventilation system not only can prevent the over-pressure or low-pressure of the cargo oil tank,but also can consider as the assist device of increasing the loading speed.The price is the only weakness of this ventilation system.
ISO high-velocity relief air flow valve test is in progress,the test data collected automatically by
the system.The trial must be vertical and inclined to the state.
ISO high-velocity relief valve fire resistance test is in progress,the test tank for combustible gases,and sustained combustion ten minutes later.The valve body temperature rises should be in line with standards.Stop burning,the valves to open and guide the flame shall not be extingu-ished.The flame must not pass into the tank valve,a return to burning.
ISO high-velocity relief ventilation valve by valve shell to protect expors,even valve burning mouth long time again,the valve will not be too high or stable.In the normal operating pressure,and its export flow rate more than 30m/s,so the valve whether open or closed,the flame will not be liquid through the valve into the cargo hold.
ISO high-velocity relief valve of imports (Vacuum valve) is conducting combustion test.Tank test within the combustible gases and combustible gaser in plastic bagstogether Unicom (deflagration concentration and consistency) will be closed only in its anti-segregation.When the plastic combustible gas deflagration,not a string of anti-closed-combustible gas in the tank to burn.ISO high-velocity relief valve closed basis for the IBC rules Chapter 6 of the requirements set up,when turned on the vacuum valve (liquid cargo imports).the outside world will never string of flame closed off access to the cargo hold of.
ISO high-velocity relief valve frozen test, even in-30℃ environment, the valve frozen thickness 20mm, the ISO high-velocity relief valve can also manually ice-breaking after normal work.
1 ) Warranty period: within one year after receipt of the goods
2 ) We will provide the instruction manual
3 ) Supply 1 PV valve in each package
4 ) Three Inspection : raw material ,pressure,measurement of size , package and finishing 5 ) Supply raw material certificate, quality guarantee, Mill Test Certificate