Specifications   DN: 15~100mm 
PN: 1.6MPa 
401pipe thread conforms to ISO228 (DN15~50mm)/ ISO7 
402 pipe thread conforms to ANSI B1.20.1NPT 

                               Brass Check Valve  Main External and Connection Dimension  

DN	SIZE	L	B	H
15	1/2	50	13	35
20	3/4	60	19	40
25	1	74	25	47.5
32	1¹/4	84	30	53
40	1¹/2	94	36	60
50	2	114	46	70
65	2¹/2	146	65	86
80	3	165	80	1025
100	4	192	100	122