Product Name：
Series 21 standard 2-Piece Full Port Ball Valve (1000 WOG)

Specifications：
Size Range ：　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 　　
Full Port  : 1/4’’ ~ 3’’ (DN8 ~ DN80) 
Pressure Rating：
Full Port:　1000 psi (PN64) WOG for DN8 - DN50/  600 psi (PN40) WOG for DN65 - DN80/ 150 psi (10 bar) with saturated steam   　　
Temperature Range:-28°C to 204°C with PTFE/RPTFE  
Body Material:　　ASTM CF8M, CF8, WCB(DIN 1.4408. 1.4308, 1.0619)
CE marking　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　
The whole series of ball valves are approved according to European Directive 97/23/EC.  　　

Features:
End Connection:  
Female pipe thread  that meets  NPT,  DIN 259/2999, and  BS21 regulations.For butt-welding,  socket-welding,and other end connection options, please contact with our sales representatives.
Blowout-Proof Design:　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　
The  stem is  installed  from  the  bottom-entry  direction   instead  of top-bottom.  This  prevents  stem to  shoot  out during  unexpected accident, and further provides a safer valve using  environment. This design is widely used in DIE ERSTE’s ball valves.　　　　　　　　　　　　 　　

Series  21  ball  valves  offers  rugged,  dependable,  and economical flow control for hydraulic, chemical, steam, and oil/ gas uses.  To achieve  such  diverse requirements,   DIE ERSTE provided several features to  meet customer’s need: valve  body design, stem, and sealing. For Series 21 ball valves, full port  and standard port are available.
The standard  blowout-proof   stem design  gives  a safer  valve  use environment  when undergo  unexpected events.  Instead of  insert the  stem  from  the top,  it  is  inserted  from  inside  of  the  bore  to prevent  stem shooting  out  during  accidents.  Also,  the double-D shape  stem design  provides  the easiness  of  lever mounting.  The self-adjusting stem and packing assembly automatically adjusts  with valve changes caused by thermal effects.
DIE ERSTE  provides solutions  for valve  sealing. All  of our Series  21 valves are equipped  with thrust washer and  gland nuts to achieve almost no-leak quality.  The thrust washer  not only prevents  galling between stem and body, it can  be considered as a secondary stem seal  and reduces  torque.  In  addition,  the  gland  nuts  are sealed tightly to act as  an additional third guard to  stop leakage. Series 21 ball valves  are  accompanied  with a  wide range  of seat  materials to choose,  as well  as investment  valve body  cast with  retraceable furnace number for future references.　　　　　　　　　　　　　　　　　　　　 　　

Standards :
Female Thread end-to-end length meets NPT, DIN 259/2999, and BS21 regulations.
Valve body  and end  cap connections  are  high quality  investment cast.  Stainless   steel  can  be  special  processed   with  anneal,  and carbon steel can be normalized, both are upon request. Other  valve components, such as  valve body, end cap, and stem,  are produced to  follow  the  ASME and  other  international   regulations.   All  the valves are  factory tested  to meet API  and MSS standards  to ensure the quality of the valves.