Name:

Special Butterfly Valve for Coal Gas

Category：

Butterfly valve

Remark:

Coal gas butterfly valve is a commonly used in the metallurgical, chemical and other fields in the ventilation pipe, is mainly responsible for containing dust cold, hot air flow, flow regulation and cut off, so it seems gas butterfly valve does not seem any remarkable, However, compared with the normal valve, butterfly valve structure is more suitable for this work environment.

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Product Details

Product Usage

Gas butterfly valves are made of welded center plate and steel plate, compact structure, light weight. Different from the ordinary type of valve, the characteristic is that it has no internal connection rod, bolts and other structures, so the corridor to bring gas corrosion and destruction have a stronger resistance.

Usually gas butterfly valve will be used pneumatic control or electric control, causing a small torque, easy to operate, high reliability. Therefore, metallurgy, environmental protection and other fields widely used. In addition, this valve can also be manually controlled and automatically switch between the control, to achieve more flexible use.

The use of this butterfly valve, to some extent, can replace the ball valve and gate valve, because there is no need to install multi-layer seals, but directly mounted on the valve body, the seat ring and pressure plate in the middle of the design ring, so to achieve even more ideal Two-way hard seal.

Gas-specific butterfly valve selection principle

1. In the system play the role of connectivity and cut off, and allows a small amount of medium leaks when the media leak (generally not more than 5%) of the damper can be used to close the damper, 74DD round damper, Fang Fengmen, steel shut off damper.

2. In the system play a role in regulating the flow of media, and generally can not afford to cut off the role of the damper, the damper should be used to adjust the damper, steel damper adjustment round. For the requirements of both regulation performance but also need to cut off the function of the media flow damper, should use the leak-free damper damper, 74DD round door, side door. Damper used for centrifugal fan inlet, should only be used to adjust the parallel switch damper, damper door. Used for regulating the role of the need to automatically shut off the occasion of the reverse flow of the throttle, the appropriate choice of anti-stop throttle.

3. In the system for cut off, and does not allow medium leakage (in theory, the amount of leakage is zero), should choose isolated door, the type of standard plug-in door, large gate, flap door, double peaked shutters Style door.

4. Used in the pulverized coal preparation system from the role of isolation throttle, optional pulverized coal gate device.

5. For gray coal dust and other granular materials isolated door, optional isolation gate device.

6. For the dust pipe vulnerable to wear and erosion of the vane damper, the surface to be wear-resistant, corrosion-resistant, optional wear-resistant ceramic door or surface coating of high temperature corrosion-resistant wear-resistant alloy layer damper (throttle life of 16Mn steel Extend the service life of 4 to 5 times).

Specification

Design and manufacture of standards: GB / T 12238-2008
Structure length standard: GB / T 12221-2005
Connection flange standard: GB / T 9113
Pressure temperature grade: GB / T 12224-2005
Test test standards: GB / T 13927-2008

Structural features

1. Quick and easy opening and closing, effort, fluid resistance, you can often operate.

2. Simple structure, small size, light weight.

3. To achieve a good seal under low pressure.

4. Adjust the performance.

The main shape and connection size

PN	DN	L	D	D1	D2	Z-d	b	f	H	H0
1.0	50	108	165	125	99	4-18	20	2	170	130
1.0	65	112	185	145	118	4-18	20	2	170	145
1.0	80	114	200	160	132	8-18	20	2	230	152
1.0	100	127	220	180	156	8-18	22	2	320	192
1.0	125	140	250	210	184	8-18	22	2	345	200
1.0	150	140	285	240	211	8-22	24	2	385	230
1.0	200	152	340	295	266	8-22	24	2	471	297
1.0	250	165	405	355	319	12-22	26	2	533	327
1.0	300	178	445	400	370	12-22	26	2	606	364
1.0	350	190	505	460	429	16-22	26	2	694	404
1.0	400	216	565	515	480	16-26	26	2	757	444
1.0	450	222	615	565	530	20-26	28	2	814	472
1.0	500	229	670	620	582	20-26	28	2	902	522
1.0	600	267	780	725	682	20-30	34	2	1048	590
1.0	700	292	895	840	794	24-30	34	5	1277	810
1.0	800	318	1015	950	901	24-33	36	5	1385	844
1.0	900	330	1115	1050	1001	28-33	38	5	1490	890
1.0	1000	410	1230	1160	1112	28-36	38	5	1620	950
1.6	50	108	165	125	99	4-18	20	2	170	130
1.6	65	112	185	145	118	4-18	20	2	170	145
1.6	80	114	200	160	132	8-18	20	2	230	152
1.6	100	127	220	180	156	8-18	22	2	320	192
1.6	125	140	250	210	184	8-18	22	2	345	200
1.6	150	140	285	240	211	8-22	24	2	385	230
1.6	200	152	340	295	266	12-22	24	2	471	297
1.6	250	165	405	355	319	12-26	26	2	533	327
1.6	300	178	460	410	370	12-26	28	2	606	364
1.6	350	190	520	470	429	16-26	30	2	694	404
1.6	400	216	580	525	480	16-30	32	2	757	444
1.6	450	222	640	585	548	20-30	40	2	814	472
1.6	500	229	715	650	609	20-33	44	2	902	522
1.6	600	267	840	770	720	20-36	54	2	1048	590
1.6	700	292	910	840	794	24-36	40	5	1277	810
1.6	800	318	1025	950	901	24-39	42	5	1385	844
1.6	900	330	1125	1050	1001	28-39	44	5	1490	890
1.6	1000	410	1225	1170	1112	28-42	46	5	1620	950
2.5	50	108	165	125	99	4-18	20	2	170	130
2.5	65	112	185	145	118	8-18	22	2	265	210
2.5	80	114	200	160	132	8-18	24	2	310	233
2.5	100	127	235	190	156	8-22	24	2	343	242
2.5	125	140	270	220	184	8-26	26	2	385	254
2.5	150	140	300	250	211	8-26	28	2	445	580
2.5	200	152	360	310	274	12-26	30	2	510	297
2.5	250	165	425	370	330	12-30	32	2	569	339
2.5	300	178	485	430	389	16-30	34	2	653	375
2.5	350	190	555	490	448	16-33	38	2	730	420
2.5	400	216	620	550	503	16-36	40	2	810	463
2.5	450	222	670	600	548	20-36	46	2	850	495
2.5	500	229	730	660	609	20-36	48	2	940	566
2.5	600	267	845	770	720	20-39	58	2	1150	630
2.5	700	292	960	875	820	24-42	58	5	1195	727
2.5	800	318	1085	990	609	24-36	58	5	1268	810

Structure picture

Inquiry

If you have any enquiry about quotation or cooperation,please feel free to email us at info@cnlgvalve.com or use the following enquiry form. Our sales representative will contact you within 24 hours. Thank you for your interest in our products.

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Special Butterfly Valve for Coal Gas

Butterfly valve

Product Details

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