Turbine wafer type desulfurization butterfly valve

Short Description:

The special desulfurization butterfly valve is designed according to the current domestic flue gas desulfurization system. In order to adapt to the corrosion of limestone slurry and gypsum slurry, the valve plate and valve stem are made of special corrosion-resistant alloy, and the valve seat is made of high wear-resistant rubber, which can adapt to the erosion of the valve seat by a large number of suspended particles in the liquid. Therefore, the product has high wear resistance and high corrosion resistance. Because the product is designed according to the requirements of users, it has pertinence and high reliability. The suitable medium is lime paste, sulfur dioxide, lime paste slurry, process water and other corrosive media

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Material of main parts of turbine wafer type desulfurization butterfly valve

Part name	Material Science
valve body	Gray cast iron, ductile iron, carbon steel
Valve plate	Carbon steel coated rubber, carbon steel coated fluoroplastics, stainless steel duplex stainless steel plate 1.4529��C276
valve seat	Natural rubber, EPDM, rubber
Stem	stainless steel��20Cr13��304
filler	Poly (vinyl chloride)

Executive standard of turbine wafer type desulfurization butterfly valve

Design and manufacture	API609� �GB/T12238
Flange connection	GB/T17251.2��GB/T9113��EN1092��ASME B16.5��JIS 10K
Structural length	GB/T12221��EN558��API609
Test and inspection	GB/T13927��API1598

Main technical parameters

Nominal diameter		DN50-DN200mm
Nominal pressure		0.6/1.0/1.6MPa
Test pressure	strength	1.5
	density	1.1
	seal up	0.6
Applicable temperature	Natural rubber��85��	EPDM��100��
Applicable media	Gypsum slurry, limestone slurry, recycled water, process water, wastewater

Drawing of turbine wafer type desulfurization butterfly valve

Main connecting dimensions of turbine wafer type desulfurization butterfly valve

DN(mm��	NPS(in)	L	D	D1	H1	H2	H3	H4	B	N-��	A	K	E	n1-��1	��W	��2	G	f
50	2	43	52.9	120	80	161	66	32	84.84	4-23	160	77	57.15	4-6.7	150	12.6	100	13
65	2.5	46	64.5	136.2	89	175	66	32	96.2	4-26.5	160	77	57.15	4-6.7	120	12.6	120	13
80	3	46	78.8	160	95	181	66	32	61.23	8-18	160	77	57.15	4-6.7	150	12.6	127	13
100	4	52	104	185	114	200	66	32	70.8	4-24.5	160	92	69.85	4-10.3	150	15.77	156	13
125	5	56	123.3	215	127	213	66	32	82.28	4-23	160	92	69.85	4-10.3	150	18.92	190	13
150	6	56	155.6	238	139	226	66	32	91.08	4-25	160	92	69.85	4-10.3	150	18.92	212	13
200	8	60	202.5	295	175	260	82	45	112.89	4-25	240	115	88.9	4-14.3	298	22.1	268	13
200	8	60	202.5	295	175	260	82	45	76.35	4-23	240	115	88.9	4-14.3	298	22.1	268	13
250	10	68	250.5	357	203	292	82	45	92.4	4-29	240	115	88.9	4-14.3	298	24.45	325	13
300	12	78	301.6	407	242	337	84	45	105.34	4-29	225	140	107.95	4-14.3	298	31.6	403	20
350	14	78	333.3	467	267	368	84	45	91.11	4-30	225	140	107.95	4-14.3	298	31.6	436	20
400	16	102	389.6	515	325	400	120	51.2	100.47	4-26	280	197	158.75	4-20.6	300	33.15	488	20
400	16	88	389.6	525	325	400	120	72	102.42	4-30	280	197	158.75	4-20.6	300	33.15	488	20
450	18	114	440.51	565	345	422	120	51.2	88.39	4-26	362	197	158.75	4-20.6	300	37.95	536	20
450	18	107	440.51	585	345	422	120	72	91.51	4-30	362	197	158.75	4-20.6	300	37.95	536	20
500	20	131	491.6	620	378	480	150	64.2	86.99	4-26	362	197	158.75	4-20.6	300	41.15	590	22
500	20	131	491.6	650	378	480	150	82	101.68	4-33	362	197	158.75	4-20.6	300	41.15	590	22
600	24	154	592.5	725	475	562	150	70.2	113.42	20-30	362	276	215.9	4-22.2	300	50.65	816	22
600	24	154	592.5	770	475	562	150	82	120.46	20-36	362	276	215.9	4-22.2	300	50.65	816	22

Product features of turbine wafer type desulfurization butterfly valve

1. The non eccentric design with medium linear structure has the characteristics of low operating torque and remarkable economy when equipped with electric device;

2. Reasonable design, compact structure, simple installation and disassembly, easy maintenance;

3. With rubber lining structure, the butterfly plate circumferential sealing surface is precision machined to a higher finish, the friction coefficient of rubber seat is low, and the valve service life is long;

4. The flow pattern of the valve plate sealing surface is linear, with small flow resistance coefficient and small valve flow resistance;

5. The designed molded rubber seat has good balance and support, which can effectively avoid the damage to rubber caused by uneven force. When the valve is fully closed, the rubber is in a good compression state to maintain zero leakage;

6. The rubber sealing surface of the two ends of the valve protrudes from the ductile iron flange surface, so there is no need for additional rubber sealing gasket when the valve is installed in the pipeline;

7. The operating mechanism of butterfly valve is flexible.

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