D342X Double Flange Double Eccentric Butterfly Valve

D342X Double Eccentric Butterfly Valve

We offer double eccentric butterfly valves in DN200-DN4000 designed with durability in focus.Our double offset butterfly valve features a cost-effective, lightweight design ideal for handling medium drinking water, water, and sewage.

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Product Description

About Double Eccentric Butterfly Valve

The double eccentric butterfly valve, often referred to as a high-performance butterfly valve, is highly regarded for its minimal maintenance demands. Its primary application extends to the drainage systems of water plants, power plants, steel manufacturing, the chemical industry, water source engineering, environmental facility construction, and various other sectors. Particularly well-suited for water pipelines, this double eccentric butterfly valve serves as both a regulation and interception tool. As a double eccentric butterfly valves supplier, we provide long-lasting double eccentric butterfly valves known for their dependability, having met the stringent ISO standards.

Butterfly valves are valves which control the flow with the 90°angle turning of the disc. DISAI butterfly valves are double eccentric and rubber sealing ring is kept in place by single piece retaining ring. This design ensures 100% sealing and makes it possible to change the sealing ring without special equipment and dismantling of any parts other than retaining ring.

WORKING PRINCIPLE

The eccentric principle is that the stem shaft is both deviated from the valve body center,also deviated from the seat. The double eccentricity effect allows the butterfly plate to quickly detach from the valve seat when the valve is opened, greatly eliminates unnecessary excessive

PRODUCT FEATURES

-Variable choice of actuators.

-Bi-directional tightness.

-Drop tight shut-off at rated pressure.

-Suitable for isolation and control service.

-Maintenance free design.

-Low operating torque requirement.

-Easy installation.

-Light weight and smaller volume requirement.

-WRAS approval for potable water.

What is the difference between double eccentric butterfly valve, triple eccentric butterfly valve and zero eccentric butterfly valve?

Double eccentric butterfly valve have two offsets and are available in carbon steel, stainless steel, Hastelloy and other ANSI Class 600 rated body materials, with a variety of PTFE seats and fireproof designs with metal backed seats. Double offset butterfly valves are suitable for a wide range of applications, including high pressure and high temperature environments.
Triple eccentric butterfly valves have three eccentricities and are designed for demanding applications with high pressure, high temperature and corrosive fluids.
Zero-eccentric butterfly valves have no offset and are suitable for low pressure, cryogenic and general-purpose applications where tight shutoff is not important.

PRODUCT RANGE

-DESIGN: EN593

-SIZE RANGE: DN200-DN4000

-Face to face dimension according to EN558-1, series 13/14

-Flange connection according to EN1092-2 PN10 PN16 PN25 PN40

-Valve top flange according to ISO5211

-Closed clockwise

-Internal&External epoxy coating

-For medium drinking water, water, and sewage

-Bidirectional

D342X Double Flange Double Eccentric Butterfly Valve

Materials list

No.	NAME	MATERIAL
1	Body	EN GJS-400-15
2	Upper shaft	SS420
3	Disc	EN GJS-400-15
4	Lower shaft	SS420
5	Bushing	brass
6	Stem cover	EN GJS-400-15
7	Hexagon bolt	Stainless steel
8	o-ring	EPDM
9	Disc seal ring	EPDM
10	Disc clamping ring	Stainless steel
11	Taper pin Taper pin Taper pin	SS420
12	spacer	Stainless steel

D342X Double Flange Double Eccentric Butterfly Valve

Main dimensions (PN16)

DN	A	B	C	ØD	ØE	ØF	ØG	N-ØH	L	weight/Kg	Torque value/N.m
200	40	217	165	340	295	102	125	4-Ø12	230	44	380
250	55	257	191	405	355	102	125	4-Ø12	250	71	650
300	55	298	252	460	410	125	150	4-Ø14	270	97	1050
350	70	344	277	520	470	125	150	4-Ø14	290	153	1250
400	90	360	300	580	525	140	175	4-Ø18	310	189	1800
450	90	400	341	640	585	165	210	4-Ø23	330	230	2500
500	90	420	368	715	850	165	210	4-Ø23	350	272	3200
600	90	490	419	840	770	165	210	4-Ø23	390	361	5000
700	100	586	495	910	840	254	300	8-Ø18	430	535	7300
800	120	650	595	1025	950	254	300	8-Ø18	470	804	10000
900	120	718	638	1125	1050	298	350	8-Ø23	510	1070	14500
1000	125	795	678	1255	1170	298	350	8-Ø23	550	1325	18000
1200	160	921	828	1485	1390	356	415	8-Ø33	630	2145	28500
1400	180	990	965	1685	1590	406	475	8-Ø39	710	2945	44100
1600	200	1188	1058	1930	1820	406	475	8-Ø39	790	4450	63000
1800	250	1260	1150	2130	2020	483	560	12-Ø39	870	5320	87500
2000	250	1435	1350	2345	2230	483	560	12-Ø39	950	8300	98000
2200	300	1665	1500	2550	2440	483	560	12-Ø39	1000	12030	119000
2400	300	1840	1590	2780	2650	603	686	20-Ø39	1110	13760	171500
2600	320	1980	1750	2960	2850	603	686	20-Ø39	1200	22600	247000

Main dimensions (PN25)

DN	PN	A	B	C	ØD	ØE	ØF	ØG	N-ØH	L	weight/Kg	torque value /N.m
200	25	40	227	166	360	310	125	150	4-Ø14	230	49	550
250	25	55	257	192	425	370	125	150	4-Ø14	250	67	1300
300	25	55	298	252	485	430	125	150	4-Ø14	270	134	1950
350	25	70	344	277	555	490	140	175	4-Ø18	290	166	2340
400	25	90	385	328	620	550	165	210	4-Ø23	310	243	4030
450	25	90	415	350	670	600	165	210	4-Ø23	330	357	4940
500	25	90	480	381	730	660	254	300	8-Ø18	350	420	7150
600	25	90	530	451	845	770	254	300	8-Ø18	390	608	10400
700	25	100	600	522	960	875	298	350	8-Ø23	430	948	15860
800	25	120	690	610	1085	990	356	415	8-Ø33	470	972	20800
900	25	120	750	649	1185	1090	356	415	8-Ø33	510	1497	30550
1000	25	125	795	678	1320	1210	356	415	8-Ø33	550	2028	35100
1200	25	160	920	827	1530	1420	406	475	8-Ø39	630	2900	54600
1400	25	180	990	940	1755	1640	406	475	8-Ø39	710	3550	93600
1600	25	200	1188	1058	1975	1860	483	560	12-Ø39	790	5213	129600
1800	25	250	1260	1150	2195	2070	603	686	20-Ø39	870	6165	162000

Note: the data in the above table does not include safety factor. Please contact the actuate manufacturer when selecting the automatic device. If there is any request for larger sizes, please contact us in detail.