Metal Hard Seal Ball Valve

Product Description

The metal hard seal ball valve series has been updated continually in its hard surface improvement and structure optimal design in accordance with different working conditions of users since it was developed and put into production. At present the available seal hard surface types include: nickelbased, cobaltbased, metal ceramic coating (WC, Cr3C2, etc.) and the modification treatment of sealing surfaces. With a patent structural design developed independently, its especially applicable for harsh working conditions in such industries as power, coal chemical industry and polysilicon.

Main performance: 
Resistance to abrasion and erosion hardness; 
Hardened layer, avoiding shedding and cracking bonding strength and stress control; 
Low sealing rate and leak rate machining precision; 
Reliable use reasonable design of process and structure. 

Characteristics:
●Multiple options for hard surface treatment
●Targeted structural design
●Protection function of elastic valve seat
●Design of special medium scraping and sweeping
●Design of dynamic load packing set
●Design of reinforced packing ring assembly
●Split seat design with patented technology, easy for maintenance and replacing
●Ultraprecision machining of closing member
●Hole sealing technology of coating
●Stress treatment technology of hard surface coating
●Onetoone valve design with simulated working conditions

Advanced coating treatment technology
HighVelocity Oxygen Fuel (HVOF) 

Leakage class 

Zero leakage when less than or equal to DN**0; conforming to API**8 or ASME b*6.**4 when more than DN**0