Triple Offset Hard Seal Water 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
		H3	Ho3	B3	H1	Ho1	B1	A1	Do1	H2	Ho2	B2	A2	WF	WL
50	43	-	-	-	266	143	106	50	160	-	-	-	-	4.5	5.5
65	46	-	-	-	290	178	140	63	180	-	-	-	-	5	7
80	49	-	-	-	320	185	140	63	180	320	185	178	180	9	9
100	56	-	-	-	342	193	140	63	240	340	198	178	180	11	14
125	64	-	-	-	378	219	140	63	240	340	205	178	180	-	-
150	70	-	-	-	415	245	140	63	240	415	241	178	180	17	20
200	71	695	325	275	470	298	170	84	300	512	263	235	370	25	31
250	76	750	355	275	535	328	170	84	300	570	290	235	370	40	48
300	83	935	475	378	606	365	200	108	400	668	340	235	370	61	79
350	92	1000	510	378	695	408	200	108	400	745	385	235	370	82	107
400	102	1145	590	378	755	446	330	144	400	827	425	235	370	122	150
450	114	1205	632	530	815	475	330	144	600	915	462	235	370	150	183
500	127	1256	665	530	905	525	370	220	600	995	500	235	370	204	254
600	154	1526	830	530	1050	610	370	220	600	1183	605	245	515	300	398
700	165	1640	903	530	1276	795	515	279	800	1460	734	245	515	462	-
800	190	1786	972	680	1384	837	515	279	800	1589	803	245	515	570	-
900	203	1917	1052	680	1505	885	515	279	800	1856	990	360	540	762	771
1000	216	2600	1170	680	1620	946	570	368	600	1958	1050	360	540	975	1179
1200	254	-	-	-	2185	1165	570	368	600	2013	1165	360	540	1678	1927

 

DN	L													Kg
		H3	Ho3	B3	H1	Ho1	B1	A1	Do1	H2	Ho2	B2	A2	WF	WL
50	43	-	-	-	266	143	160	106	50	-	-	-	-	4.5	5.5
65	46	-	-	-	290	175	160	140	63	-	-	-	-	7	7
80	49	-	-	-	320	185	160	140	63	513	265	178	180	9	9
100	56	-	-	-	342	195	160	140	63	538	282	178	180	20	11.5
125	64	-	-	-	365	209	300	140	63	560	295	178	180	23	17
150	70	-	-	-	415	243	300	140	63	605	300	178	180	29	22
200	71	695	327	275	510	263	400	150	84	749	321	235	370	40	39
250	76	750	355	275	567	295	400	150	84	803	330	235	370	50	47
300	83	935	472	378	665	342	600	200	108	880	365	235	370	68	68
350	92	1033	515	378	739	385	600	200	108	960	410	235	370	105	138
400	102	1185	595	530	825	430	600	240	152	1032	445	235	370	163	190
450	114	1270	632	530	910	469	330	144	600	1118	487	235	370	205	230
500	127	1335	665	530	990	500	370	220	600	1190	520	235	370	270	265
600	154	1642	829	680	1210	618	370	200	600	1380	625	245	515	390	437
700	165	1785	905	680	1475	746	515	279	800	1582	745	245	515	465	740
800	190	1915	970	680	1600	810	515	279	800	1713	810	245	515	570	920
900	203	-	-	-	1870	1000	515	279	800	1870	875	360	540	701	1189
1000	216	-	-	-	2000	1065	570	368	600	2000	940	360	540	800	1220
1200	254	-	-	-	2215	1170	570	368	600	2118	1060	360	540	922	1680