1. The design and manufacture standards of stainless steel stop valve of J41W:
1). Design and manufacture: GB12235-89
2). Structure and length: GB12221-89
3). Flange dimension: JB/G79-94
4). Checking and testing for valve: GB13927
2. Performance specifications of stainless steel stop valve of J41W:

type	norminal pressure	test pressure			working temperature(℃)	medium
		strength(water)(Mpa)	sealed (water) air(Mpa)	low pressure sealed air(Mpa)
J41W-16P(R)	1.6	2.4	1.8	0.6	≤200	NITRIC ACID
J41W-25P(R)	2.5	3.8	2.8	0.6	≤200	nitrose
						ACETIC ACID
						Acetic Acid
						NITRIV ACID
						nitrose
J41W-40P(R)	4	6	4.4	0.6	≤200	ACETIC ACID
J41W-64P(R)	6.4	9.6	7	0.6	≤200	Acetic Acid