Product Structure Features

1.Double eccentric structure design, to avoid the wear of the sealing surface, maintaining the integrity of the seal and high service life.2.Wide angle seat design to avoid pressing and damaging the valve seat and valve tight contact. Provide longer service life.3.Two - stage high - strength stem structure to ensure easy maintenance, double eccentric structure makes online maintenance valve seat and valve disc becomes easy and fast.4.Streamlined spherical disc with high flow coefficient.5. Internal stem/disc drive, avoiding more leakage paths that may occur when pins or bolts are installed.6.Flexible retaining ring provides a complementary seating pressure on the disc, not only has the advantages of simple structure and light weight, the driving torque is small, simple, rapid, good flow regulating function and close sealing characteristics.7. The stem is sealed by high-efficiency PTFE.

Material of main parts

Part Name	Material
Body	WCB、QT450-10、HT200、HT250
Butterfly	WCB、QT450-10、HT200、HT250
Valve shaft	2Cr13
Sealing ring	Nitrile oil resistant rubber
Filler	Flexible graphite

Executive standard

Design and Manufacturing	GB/T12238
Flange connection	GB/T9113 GB/T17241.6
Structure length	GB/T12221
Test and Inspection	GB/T13927

The main technical parameters

DN(mm)	50-3000		50-1600
PN(MPa)	0.6	1.0	1.6
Seal test	0.66	1.1	1.76
Strength test	0.9	1.5	2.4
proper temperature	Nitrile rubber: -40℃～90℃, Fluorine rubber: -20℃～200℃
Applicable media	Water, air, natural gas, oil and weak corrosive fluids
leak rate	Comply with GB/T13927 standard
drive mode	Worm gear drive, electric, pneumatic, hydraulic

Main external connection dimensions

DN	size					Flange size and bolt hole size
	L	H	H1	A	B	1.0MPa				1.6MPa
						D	D1	D2	n-d	D	D1	D2	n-d
50	108	82.5	306	80	80	165	125	99	4-18	165	125	99	4-18
65	112	92.5	321	80	80	185	145	118	4-18	185	145	118	4-18
80	114	100	346	80	80	200	160	132	8-18	200	160	132	8-18
100	127	110	387	95	95	220	180	156	8-18	220	180	156	8-18
125	140	125	411	95	95	250	210	184	8-18	250	210	184	8-18
150	140	142.5	447	95	95	285	240	211	8-22	285	240	211	8-22
200	152	170	607	190	308	340	295	266	8-22	340	295	266	12-22
250	165	192.5	688	190	308	395	350	319	12-22	405	355	319	12-26
300	178	222.5	742	190	308	445	400	370	12-22	460	410	370	12-26
350	190	252.5	797	190	308	505	460	429	16-22	520	470	429	16-26
400	216	282.5	930	270	466	565	515	480	16-26	580	525	480	16-30
450	222	307.5	975	270	466	615	565	530	20-26	640	585	548	20-30
500	229	335	1065	270	466	670	620	582	20-26	715	650	609	20-33
600	267	390	1225	457	625	780	725	682	20-30	840	770	720	20-36
700	292	447.5	1343	457	625	895	840	794	24-30	910	840	794	24-36
800	318	507.5	1436	457	625	1015	950	901	24-33	1025	950	901	24-39
900	330	557.5	1616	598	853	1115	1050	1001	28-33	1125	1050	1001	28-39
1000	410	615	1711	598	853	1230	1160	1112	28-36	1255	1170	1112	28-42
1200	470	727.5	1971	598	853	1455	1380	1328	32-39	1485	1390	1328	32-48
1400	530	837.5	2218	860	1345	1675	1590	1530	36-42	1685	1590	1530	36-48
1600	600	957.5	2578	860	1345	1915	1820	1750	40-48	1930	1820	1750	40-56
1800	670	1057.5	2689	860	1345	2115	2020	1950	44-48	2130	2020	1950	44-56
2000	760	1162.5	3022	952	1592	2325	2230	2150	48-48	2345	2230	2150	48-62