2507 double-phase steel manual flange ball valve,flange ball valve

The Q41F-2507 duplex steel manual flange ball valve is made of 2507 super duplex steel, with diameters ranging from DN15 to DN600 and pressures from PN16 to PN160. It is widely used in industries such as chemical engineering, food and beverage, brewing, wastewater and waste gas treatment, and seawater desalination. It is resistant to acid and alkali corrosion as well as chloride ion corrosion.

The Q41F-2507 duplex steel manual flange ball valve can be made with floating balls (DN15-DN250) and fixed balls (DN50-DN600). The valve seat sealing ring of the floating ball valve is an elastic design structure. When the medium pressure is low, the contact surface between the valve seat sealing ring and the ball is also small. Therefore, a relatively high sealing pressure is formed between the valve seat sealing ring and the ball, ensuring reliable sealing performance. When the medium pressure is relatively high, the contact area between the sealing ring and the ball is large, and the elastic deformation of the sealing ring is also relatively large.

V-shaped packing

The valve stem adopts a V-shaped packing seal structure. The V-shaped packing can effectively change the preload force and the preload force of the medium on the valve stem packing, ensuring the sealing of the valve stem. The packing pre-tightening adopts the butterfly spring pre-tightening structure, which will make the sealing performance of the valve stem packing more reliable.

Valve stem anti-blowing and reverse sealing

The valve stem is equipped with a shoulder seat at its bottom, so that when the medium operates under extreme conditions, such as abnormal pressure increase inside the valve cavity or failure of the packing gland, the valve stem will not be blown out. Meanwhile, to prevent leakage when the valve stem packing is burned out, a thrust bearing is installed at the contact point between the valve stem shoulder seat and the valve body to form a reverse valve seat seal. The sealing force of this reverse seal increases as the medium pressure rises, thus ensuring the reliability of the valve stem seal under pressure difference and preventing leakage and accidents.

2507 duplex steel manual flange ball valve, made of 2507 super duplex steel, has a diameter of DN15-DN600 and a pressure of PN16-PN160. It is applied in industries such as chemical engineering, food and beverage, brewing, wastewater and waste gas treatment, and seawater desalination. It is resistant to acid and alkali corrosion as well as chloride ion corrosion.

Packing of Standard Packing: 

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 470 gallon liquid totes Special package is available on request. E FORUs’  is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original cond