Triple Offset Hard Seal Flange Butterfly Valve

• Media: Water,Oil,Gas and Other Non-Causticity Medium
• Driving Mode: Manual
• Seal Form: Supercharging Pressured Sealed
• Work Pressure: Mid-Pressure (2.5mpa< Pn <6.4mpa)
• Working Temperature: Normal Temperature (-40°C<T<120°C)
• Material of Seal Surface: Soft Sealed
• Application: Industrial Usage, Water Industrial Usage
• Service: OEM/ODM
• Transport Package: Poly Bag, Inner Box, Outer Carton /and Pallet
• Trademark: DAISEN

Product Description

Triple Eccentric Sealed Butterfly Valve

The rotation center of disc (namely the center of valve shaft) and thecenterline ofbody form up a 'b' eccentric on the base of single eccentric butterfly valve. Makingthe sealing face of disc disengaged from seat sealing face more quickly than singleeccentric seal butterfly valves during the process of open and close. Once disc turnsto8° -12°. the disc sealing face will be completely disengaged from the seat sealingface. Once fully opened, a gap 'Y' will be formed up between the two sealing faces.This type of butterfly Valves are designed to have greatly lowered the mechanicalwear and extrusion deformation between the two sealing faces, making the sealingperformance of butterfly valve much better.
The characteristic of this structure is to make stem axis not only deviated from thecenter of disc. But also the center of the body. The effect of double eccentric is that,when valve has been opened, disc can be quickly disengaged from seat, thus togreatly eliminate the unnecessary excessive extrusion and scratch between the discand seat, reduce opening resistance, lower the abrasion and improve the service lifeof seat. As scratch has been greatly lowered, metal seat can be used for double eccentricbutterfly valve, so that butterfly valves are able to be used in high temperature fields.However, as its seal is positioned sealing construction ,i.e. The sealing faces discand seat is lineal contact, disc extruding seat to produce elastic deformation, thusto effect the sealing performance especially seat to produce elastic position, especiallyfor those with metal seat, and is given poor pressure endurance. This is why butterfly valves are, conventionally, not resistant to high temperature and leakage.

 

DN	L													Kg
		H1	Ho1	E1	F1	W1	H2	Ho2	E2	F2	H3	Ho3	A3
50	108	295	195	32	125	160	316	218	156	126	-	-	-	12
65	112	313	205	32	125	180	336	228	156	126	-	-	-	13
80	114	333	215	32	125	180	353	238	156	126	-	-	-	15
100	127	350	225	32	150	200	380	255	168	126	-	-	-	17
125	140	408	265	44	160	200	413	270	168	126	-	-	-	27
150	140	446	285	44	160	350	466	305	250	126	-	-	-	29
200	152	527	345	64	170	350	554	362	250	175	740	367	275	45
250	165	595	375	64	170	400	630	410	250	175	900	443	378	69
300	178	679	430	64	190	400	693	444	290	268	990	493	378	86
350	190	744	465	94	190	600	771	492	290	268	1155	575	378	122
400	216	855	540	94	190	600	837	522	290	268	1205	600	530	150
450	222	910	570	132	230	600	892	552	290	268	1290	643	530	214
500	229	972	605	132	230	800	973	606	290	268	1395	705	530	263
600	267	1137	705	185	275	800	1098	666	410	460	1665	838	530	333
700	292	1255	765	185	275	400	1252	762	410	460	1882	942	680	473
800	318	1425	870	234	320	400	1575	1020	305	610	2093	1066	680	655
900	330	1531	925	234	320	400	1734	1075	305	610	2175	1210	1480	844
1000	410	1708	1035	296	370	400	1908	1235	385	650	2245	1275	1560	1078
1200	470	1941	1155	296	370	600	2121	1355	385	650	2375	1385	1890	1729
1400	530	2263	1350	410	475	600	2512	1600	535	745	2530	1510	1890	2247
1600	600	2507	1475	410	475	600	2857	1725	535	745	2779	1639	1960	3059
1800	670	2824	1670	506	570	600	3124	1970	660	820	-	-	-	3717
2000	650	3075	1780	506	570	800	3375	2080	660	820	-	-	-	4480
2200	1000	3481	2051	636	660	800	3780	2351	825	920	-	-	-	5880
2400	1110	3705	2125	636	660	800	3933	2425	825	920	-	-	-	7140