Butterfly valve series__Anhui Dazhong Valve Co., Ltd.

Flange Center Plate Butterfly Valve（Pneumatic）

Technical Parameter

Pressure range：CLASS150~CLASS600 (PN6~PN16)

Nominal diameter：NPS2"~120"(DN50~DN3000)

Body material：Carbon steel, Stainless steel, Duplex stainless steel, Alloy steel, Ductile iron

End connection：Flange

Temperature range: -40℃~120℃

Drive type：Pneumatic device

Design standard：API 609，AWWA C504，GB/T12238，GB/T13927

Product Detail

Product Structure Features

1.Driving device：Can be equipped with a handle, worm gear, electric or pneumatic control device.

2.Bushing：Reduce the rotational torque, support the stem, and make it separate from the body effectively, reduce the wear of the valve stem.

3.Surface of disc axle hole：After polishing treatment, with the seat precision.

4.High precision disc external profile：To achieve zero leakage requirements of air tightness test. The opening and closing torque is small, prolong the service life of the seat.

5.Stem seal：Stem seal is not easy to deform, thereby avoiding the usual stem leakage.

6.Strong precision key：The utility model has the advantages of high precision and high strength, and is suitable for the installation of the handle and other control devices.

7.Precision taper pin：The utility model is characterized in that the valve rod and the valve plate are firmly connected with the valve plate, and the utility model has the characteristics of anti vibration and easy replacement.

8.Integral stem design：High precision, high reliability, easy to control the opening and closing of the valve plate.

9.Body lined with rubber seat:Good overall stability, stable, tensile, anti leakage.

10.O-ring:Auxiliary shaft end leakage.

Main external connection dimensions

Nominal diameter		Length	Dimensions(Reference)				Connection size (standard value)												WT kg
Nominal diameter		Length	Dimensions(Reference)				0.6MPa				1.0MPa				1.6MPa
mm	in	L	C	B	A	D	D1	D2	D3	n-d	D1	D2	D3	n-d	D1	D2	D3	n-d
50	2	108	82.5	338	180	65	140	110	88	4-14	165	125	99	4-18	165	125	99	4-18	14
65	2-1/2	112	92.5	358	180	65	160	130	108	4-14	185	145	118	4-18	185	145	118	4-18	16
80	3	114	100	413	245	72	190	150	124	4-18	200	160	132	8-18	200	160	132	8-18	17
100	4	127	110	428	240	72	210	170	144	4-18	220	180	156	8-18	220	180	156	8-18	21
125	5	140	125	444	240	72	240	200	174	8-18	250	210	184	8-18	250	210	184	8-18	27
150	6	140	142.5	553	350	93	265	225	199	8-18	285	240	211	8-22	285	240	211	8-22	29
200	8	152	170	678	350	93	320	280	254	8-18	340	295	266	8-22	340	295	266	12-22	50
250	10	250	197.5	742	550	350	375	335	309	12-18	395	350	319	12-22	405	355	319	12-26	69
300	12	270	222.5	803	600	350	440	395	363	12-22	445	400	370	12-22	460	410	370	12-26	91
350	14	290	252.5	866	600	350	490	445	413	12-22	505	460	429	16-22	520	470	429	16-26	110
400	16	310	282.5	940	600	350	540	495	463	16-22	565	515	480	16-26	580	525	480	16-30	138
450	18	330	307.5	995	750	380	595	550	518	16-22	615	565	530	20-26	640	585	548	20-30	175
500	20	350	335	1058	750	380	645	600	568	20-22	670	620	582	20-26	715	650	609	20-33	210
600	24	390	390	1163	750	380	755	705	667	20-26	780	725	682	20-30	840	770	720	20-36	275
700	28	430	447.5	1283	750	380	860	810	772	24-26	895	840	794	24-30	910	840	794	24-36	530
800	32	470	507.5	1398	750	380	975	920	878	24-30	1015	950	901	24-33	1025	950	901	24-39	590
900	36	510	557.5	1498	1250	380	1075	1020	978	24-30	1115	1050	1001	28-33	1125	1050	1001	28-39	1400
1000	40	550	615	1608	1500	580	1175	1120	1078	28-30	1230	1160	1112	28-36	1255	1170	1112	28-42	1650
1200	48	630	727.5	1876	1500	580	1405	1340	1295	32-33	1455	1380	1328	32-39	1485	1390	1328	32-48	2140

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