Ball Valve Lockout Dia 2" - 8" Top Rail:

LOTO Model PS-LOTO-BVTOPRAIL
Material Strong Polyurethane Plastic
Ball Valve  diameter (inch) 2" - 8" 
Max. Handle length 10 Inches
Pipes diameter (mm) 50 to 200 mm
Positions Closed Only
Ideal for

 Top Rail Ball Valve covers