CLASS 125 CAST BRONZE,SWING CHECK VALVES,SCREWED CAP,SCREWED ENDS.,END TO END:KITZ STANDARD,END CONNECTION:JIS B0203,WALL THICKNESS:KITZ STANDARD,TEST STANDARD:KITZ STANDARD
Screwed Cap, Swing type disc, 
Threaded ends to BS21 (JIS B0203) 
W.O.G. non-shock 1.38 MPa (200 psi), Saturated steam pressure 0.86 MPa 
(125 psi). 
*Size 4 = Cap: Bronze.