Flange center plate butterfly valve(Worm Gear)

Technical Parameters

Fluid medium: Water, oil, gas and various corrosive media
Temperature Range: -10～150℃
Pressure Ratings: PN1.0～1.6MPa
Size Range: DN50～DN1400
Connection Type: Flanged
Connection standard: GB·ANSI·DIN·API·ISO·BS
Body Materials: Cast iron；Ductile iron
Valve seat material: Rubber
Valve plate material: Stainless steel;Ductile iron
Note: All parts can be made of different materials according to actual working conditions.

Product Details

Technical Standard

1.Device for regulating or cutting off medium in pipeline.
2.Suitable for handle control device (DN50~300), worm gear, electric and pneumatic control device.
3.Design and manufacturing standards in line with GB/T12238.
4.Pressure test conforms to GB/T13927.
5.Structure length is GB/T12221.
6.Side flange standard conforms to GB/T17241.6.

Product Features

1.Can be equipped with a handle, worm gear, electric or pneumatic control device.
2.Reduce the rotational torque, support the stem, and make it separate from the valve body effectively, reduce the wear of the valve stem.
3.After polishing treatment, with the valve seat precision.
4.To achieve zero leakage requirements of air tightness test. The opening and closing torque is small, prolong the service life of the valve seat.
5.Stem seal is not easy to deform, thereby avoiding the usual stem leakage.
6.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.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.High precision, high reliability, easy to control the opening and closing of the valve plate.
9.Good overall stability, stable, tensile, anti leakage.
10.Auxiliary shaft end leakage.

Main overall connection dimensions（PN1.0/1.6MPa）

DN	L	D	D1	D2	b	f	N-d0	A	K	E	F	H	H1	H2	Φ2	N-d1
50	108	165	125	102	18	3	4-Φ18	180	65	50	13	83	338	28	12.6	4-Φ7
65	112	185	145	122	18	3	8-Φ18	180	65	50	13	93	358	28	12.6	4-Φ7
80	114	200	160	138	20	3	8-Φ18	245	65	50	13	100	413	28	12.6	4-Φ7
100	127	220	180	158	20	3	8-Φ18	240	90	70	13	114	428	28	15.77	4-Φ10
125	140	250	210	188	22	3	8-Φ18	240	90	70	13	125	444	28	18.92	4-Φ10
150	140	285	240	212	22	3	8-Φ22	350	90	70	13	143	553	28	18.92	4-Φ10
200	152	340	295	268	24	3	12-Φ22	350	125	102	13	170	678	38	22.1	4-Φ12
250	165	405	355	320	26	3	12-Φ26	550	125	102	13	198	742	38	28.45	4-Φ12
300	178	460	410	378	28	4	12-Φ26	600	125	102	20	223	803	38	31.6	4-Φ12
350	190	520	470	438	30	4	16-Φ26	600	150	125	20	270	866	45	31.6	4-Φ14
400	216	580	525	490	32	4	16-Φ30	600	175	140	20	300	940	51	33.15	4-Φ18
450	222	640	585	550	40	4	20-Φ30	750	175	140	20	340	995	51	37.95	4-Φ18
500	229	715	650	610	44	4	20-Φ33	750	175	140	22	355	1058	57	41.12	4-Φ18
600	267	840	770	725	54	5	20-Φ36	750	210	165	30	410	1163	70	50.63	4-Φ22
700	292	910	840	795	40	5	24-Φ36	750	300	254	30	478	1283	66	63.35	8-Φ18
800	318	1025	950	900	42	5	24-Φ39	750	300	254	30	529	1398	66	63.35	8-Φ18
900	330	1125	1050	1000	44	5	28-Φ39	1250	300	254	34	584	1498	118	75	8-Φ18
1000	410	1255	1170	1115	46	5	28-Φ42	1500	300	254	34	357	1608	142	85	8-Φ18
1200	470	1485	1390	1330	52	5	32-Φ48	1500	350	298	34	799	1876	150	105	8-Φ22

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