Double Eccentric Flange Butterfly Valve

valve

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Product Description

Structural features and uses

This series of butterfly valves are worm gear driven. Flange connection. Rubber seal. The valve body is made of ductile iron. The valve body is cast in one piece. With "energy saving, environmental protection, safety and convenience" as the design guidance, combined with the advantages and disadvantages of domestic and international products, we have developed a double eccentric soft seal butterfly valve with advanced domestic and foreign levels. It has small operating torque. Easy to operate, labor-saving and dexterous; can be installed in any position, easy to maintain: the seal can be replaced, the sealing performance is reliable to achieve two-way sealing; the sealing material is aging-resistant. Corrosion-resistant, long service life: the end of the shaft is equipped with a special transmission square cap, When operating the Yao valve installed in the valve well, you only need to use the matching T-key to complete the opening and closing on the ground. This product is suitable for municipal water supply and drainage, building water supply and drainage. Sewage treatment, agricultural and industrial water systems.

Double Eccentric Flange Butterfly Valve

Warranty period: 1 year

Body material: Ductile iron

Size: Standard size

Seal material: Nitrile rubber

Standard: American Standards Association

MATERIAL SPECIFICATION

Part No.	Part	Standard Specification	Options
1	Valve Body	EN-GJS-450-10
2	Upper Stem	Stainless Steel	SS304, SS316, SS420, SS431
3	Disc	EN-GJS-450-10
4	Pin	Stainless Steel 431
5	Lower Stem	Stainless Steel	SS304, SS316, SS420, SS431
6	Bushing	Brass
7	0-Ring	NBR	EPDM
8	Seat	Stainless Steel
9	Sealing Ring	NR
10	Gear Box	EN-GJS-450-10
11	Packing	NBR
12	Bolt	Carbon Steel Zinc Plated	SS304, SS316

DN		Dimensions(mm)
Inch	mm	H1	H2	H3	H4	L	L1	L2	L3	L4	OD	OD1	OD2	OD3	OD4	OD5	n-ON	Top flange ISO5211
16"	400	360	468	70	525	216	325	350	325	24.5	565	480	400	45	515	380	16-28	F14/F16
18"	450	400	505	70	562	222	356	375	325	25.5	615	530	450	50	565	380	20-28	F14/F16
20"	500	450	565	70	628	229	450	410	340	26.5	670	582	500	60	620	380	20-28	F16
24"	600	514	590	90	646	267	450	530	373	30	780	682	600	65	725	380	20-φ31	F25
28"	700	615	625	82	689	292	782	550	448	32.5	895	794	700	75	840	500	24-φ31	F25
32"	800	672	680	92	760	318	882	600	480	35	1015	901	800	85	950	500	24-34	F25
36"	900	705	715	107	795		982	650	555	37.5	1115	1001	900	95	1050	600	28-34	F25
40"	1000	819	841	143	922.5	410	1082	700	616	40	1230	1112	1000	105	1160	700	28-37	F25
48"	1200	975	1005	131	1089	470	1282	800	648	45	1455	1328	1200	125	1380	700	32-φ41	F30
56"	1400	1115	1210	140	1294	530	1432	980	648	46	1675	1530	1400	150	1590	700	36-φ44	F35
64"	1600	1205	1295	240	1402	600	1622	1075	686	49	1915	1750	1600	160	1820	700	40-50	F35
72"	1800	1405	1470	263.5	1580	670	1822	1175	706	52	2115	1950	1800	170	2020	700	44-50	F40
80"	2000	1595	1660	280	1790	760	1982	1260	821	55	2325	2150	2000	190	2230	1000	48-50	F48
88"	2200	1700	1745	280		1000	2105	1365		60	2550	2370	2200	220	2440		52-56
96"	2400	1780	1850	320		1100	2405	1525		62	2760	2570	2400	240	2650		56-56
104"	2600	1905	1965	320		1200	2650	1605		62	2960	2778	2600	240	2850		60-56