Design standard: ASME B16.34.  
Body material: ASTM A105.
Nominal diameter: 1/2".
Pressure: CL300.
End connection: Threaded x Socket Welded(Nipple).
End to end: ASME B16.10.
Working temperature: -29℃~+200℃. 
Mode of operation: Lever.
Test and inspection: API 598.

Reliable sealing performance and small torque; 
Full bore and reduced bore; 
Fire safe, anti-static and anti-blowout stem design; 

One nipple end for special working condition;
Optional locking device; 
Optional ISO 5211 top flange.