Triple Offset Hard Seal Flange Butterfly Valve with High Quality

• 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	290	175	32	125	160	316	218	156	126	-	-	-	19
65	112	295	195	63	140	180	336	228	156	126	-	-	-	22
80	114	320	185	63	140	180	513	265	178	180	-	-	-	32
100	127	342	195	63	140	200	538	282	178	180	-	-	-	36
125	140	365	209	63	140	200	560	295	178	180	-	-	-	39
150	140	415	243	63	140	350	605	300	178	180	-	-	-	43
200	152	510	263	84	150	350	749	321	235	370	395	327	275	57
250	165	567	295	84	150	400	803	330	235	370	750	355	275	88
300	178	664	342	108	200	400	880	365	235	370	955	472	378	109
350	190	739	385	108	200	600	960	410	235	370	1033	515	378	144
400	216	825	430	152	240	600	1032	445	235	370	1185	595	530	200
450	222	910	469	152	240	600	1118	487	235	370	1270	632	530	238
500	229	990	500	168	300	800	1190	520	235	370	1335	665	530	326
600	267	1210	618	192	320	800	1380	625	235	370	1642	829	530	466
700	292	1475	746	338	237	400	1582	745	245	515	1785	905	680	592
800	318	1600	810	338	237	400	1713	810	245	515	1915	970	680	917
900	330	1870	1000	530	785	400	1870	875	360	540	1964	1239	1480	1078
1000	410	2000	1065	530	785	400	2000	940	360	540	2096	1306	1770	1393
1200	470	2215	1170	530	785	600	2118	1060	360	540	2333	1418	1830	1855
1400	530	2430	1319	650	865	600	2328	1325	385	565	2591	1546	1890	2457
1600	600	2700	1443	650	865	600	2550	1450	385	565	2908	1738	2210	3360
1800	670	2938	1595	650	865	600	2816	1598	300	770	-	-	-	-
2000	650	3210	1743	650	865	800	3056	1746	684	794	-	-	-	-
2200	1000	3481	2051	636	660	800	3780	2351	825	920	-	-	-	-
2400	1110	3705	2125	636	660	800	3933	2425	825	920	-	-	-	-