Design standards API6D, ASME B16.34, BS5351, ISO17292, DIN 
 Connection RF, RTJ flange, butt welding, threaded, socket weld 
 Operation manual, pneumatic, electric, gas linkage, etc. 
 Size range 2 "- 48" (DN 50-DN 1200) 
 Pressure range of CLASS 150 - CLASS 2500 (Mpa 1.6-Mpa 42.0) 
 Range of carbon steel materials, stainless steel, 20 # steel, nickel-based alloy, cobalt-based alloy 
 Temperature range of -196 ℃ -540 ℃ 
 Application of oil, gas, chemical, petrochemical, power plants, metallurgy, paper making 

 Two-block emissions: According to the API6D the valve fully closed position, the valve can be discharged in the cavity of the media. 

 Path: Valves can be a full or reduced diameter (Venturi type), the minimum diameter at API6D requirements. 

 Anti-static design: rubber or plastic seals to be cut off from the metal parts (such as valve, ball, bearing ring, stem) between the conductivity, the stainless steel spring to ensure, in line with BS5351 requirements. 

 No pressure balance hole sphere: the sphere is no pressure balance hole to balance the ball to open when the pressure in the chamber, so that in the valve when fully closed or fully open the discharge valve in the cavity of the media, can not change the operating conditions circumstances, on the valve seat and stem seal for effective inspection and maintenance. 

 Stem anti-fly design: separation of the stem and the ball is in accordance with BS5351 standards ASMEB16.34 and design of anti-fly, there is a whole axis of the shoulder, through the self-lubricating thrust bearings under pressure in the valve cover. 

 Double sealed valve seat: Each is independent to a floating support ring, and reasonably designed to pressure from the self-sealing (double piston effect) to cut off the media, a two-way dual-sealed type, the repetition of the seal design has a double barrier of fluid role in ensuring that seal failure in the upstream and downstream can be sealed. Overpressure inside the valve can not be released back into the pipelines, when the medium is a liquid, you need to install the valve outlet pressure relief valve. 

 Seat: ASME1500 # pressure levels below the valve seat with a rubber seal to ensure that the dual sphere, primary metal seal, secondary soft sealing; higher plastic seat pressure levels, such as nylon or enhanced PTFE, to ensure that only hermetic sealing of the ball soft; In addition, the dual rubber + plastic seat recommended for very low pressure, there is no transition layer of stainless steel trim valves. 

 Double stem seal: PTFE Teflon ring with two with the O-ring to achieve the double stem seal can be achieved with pressure situations in the outer O-ring replacement stem. 

 Emergency seal: If the valve stem and the valve seat ring seal bearing has damage, use of appropriate sealing grease temporary repair. In fact the valve cover or on the gland and the body has a grease hole to prevent the stem and / or support ring seal leak caused damage, grease hole and sealing groove reasonable distribution of fat, each grease hole is equipped with a check valve before the grease gun with quick connection fittings. 

 Operational: All valves can be equipped with manual operation, or 1 / 4 turn power drive unit. 

 Fire design: All standard valves designed to meet the API607/API6FA/BS6755: PART2 requirements. Internal parts and body connection, not graphite, with fluorine rubber (eg VITON) pass the fire test, test proven to meet the requirements. 

 Discharge connection: Each valve discharge port and venting are available port, plug or valve installed upon request. 

 Long stem: the valve installed in the ground or buried, it can lengthen the stem. Pressure relief valve, drain valve, valve grease is also extended to the appropriate location. 

 Transition to take over: When the valve is welded to the pipeline require special process or the impact of heat stress relief, can be equipped with a transition to take over. 

 Acid Services: valve material can be found NACEMR-01-75 requirements.