1, flow strength of small, medium sealing surface by the erosion of the sad and small brush.
2, open and close more effort.
3, medium flow unrestricted, non-spoiler, do not reduce the pressure.
4, simple shape, the structure of the short length, good manufacturing process for a wide range.Specifiaction

Type	Nominal Presure	Test Pressure			Degree C Working Temperature	SuitableMedium
		(water)(Mpa)	Sealing(water)(Mpa)	Low pressure sealing(Mpa)
Z41H-16C Z41W-16P(R)	1.6	2.4	1.8	0.6	≤200	NITRIC ACID
Z41W-25P(R)	2.5	3.8	2.8	0.6	≤200	ACETIC ACID
Z41W-40P(R)	4.0	6.0	4.4	0.6	<200	NITRIC ACID
Z41W-64P(R)	6.4	9.6	7.0	0.6	<200	ACETIC ACID

Main part material

Part name	Material
	Z24Y-16I －25I －40I	Z24W-16P －25P －40P	Q41W-16R －25P －40R
Body donnet	Ci Ni steel	Ci Ni Ti	Ci Ni Mo Ti steel
Wedge gate	Alloy steel＋corbiddealloy
Stem	Alloy steel
Stem nut	Al bronze
Hand wheel	Csatiom forageable casriron

Main outside size

Type	DN NominalDiameter	(mm) Dimensions
		L	D	D1	D2	H	b-f	Z-d	D0
Z41W-40P(R)	15	130	95	65	45	170	16-2	4-14	40
	20	150	105	75	55	190	16-2	4-14	51
	25	160	115	85	65	205	16-2	4-14	58
	32	180	135	100	78	270	18-2	4-18	66
	40	200	145	110	85	310	18-3	4-18	76
	50	230	160	125	100	371	20-3	4-18	88
	65	290	180	145	120	391	22-3	8-18	110
	80	310	195	160	135	455	22-3	8-18	121
	100	350	230	190	160	551	24-3	8-23	150
	125	400	270	220	188	628	28-3	8-25	178
	150	450	300	250	218	708	30-3	8-25	204
	200	550	375	320	282	885	38-3	12-25	260
	250	650	445	385	345	960	42-3	12-30	313
Z41W-64P(R)	15	170	105	75	55	140	18-2	4-14	41
	20	190	125	90	68	195	20-2	4-18	51
	25	210	135	100	78	210	22-2	4-18	58
	32	230	150	110	82	280	24-2	4-23	66
	40	240	165	125	95	328	24-3	4-23	76
	50	250	175	135	105	390	26-3	4-23	88
	65	280	200	160	130	410	28-3	8-23	110
	80	310	210	170	140	485	30-3	8-23	121
	100	350	250	200	168	590	32-3	8-25	150
	125	400	295	240	202	688	36-3	8-30	176
	150	450	340	280	240	768	38-3	8-34	204
	200	550	405	345	300	973	44-3	12-34	260
	250	650	470	400	352	1050	48-3	12-41	313