Spherical disc butterfly valve is developed combined with the advantage of the butterfly valve and segment ball valve . The special disc butterfly valve can be used at inlet and outlet of the water pump,piping network system,recovery system,high water tank,sewage system and any other back flow preventing position to shut off or control the pipeline.

Features

1.Designed with bidirectional sealing structure,the installation of the spherical disc butterfly  valve will not be restricted by the direction of the fluid.

2.Since the metal sealed spherical disc butterfly valve is offered with self-sealing device,reliable sealing performance can be realized under the pressure from medium.

3.When the valve is installed on the reversed direction of the fluid ,powerful specific pressure of sealing can be obtained as valve seat and fluid formed annual contacting area.

4.The valve has long service life due to wear compensation.

5.The unique rotational structure  ,as well as the sphere-conical sealing surface of the valve seat,makes for the self-cleaning function.The solid particles will be crushed when the bidirectional sphercial disc butterfly  valve is opened or closed.

Technical Specifications

Size ：2”~40” DN50~DN3000

Pressure：Class 150~Class 300   PN1.0~PN4.0

Body material ：WCB, CF8, CF8M, CF3, CF3M,etc.

Sealing material：Hard alloy

Connection type：Flange or weld

Operating type：Worm gear ,electric or pneumatic 

Applications

Municipal engineering

Circulating water system

Water treatment system

Fire extinguisher system

Main Dimensions

Flange Type:

 

Size		Face to face （mm）		H1	H2
NPS (Inch )	DN（mm)	PN6/PN10/PN16 /PN25/Class150	PN40/ Class 300		Worm Gear	Pneumatic	Electric
2	50	108	150	118.5	230	510	410
2-1/2	65	112	170	128.5	240	500	400
3	80	114	180	140	240	505	425
4	100	127	190	150	270	525	450
5	125	140	200	171	313	520	440
6	150	140	210	208	340	586	491
8	200	152	230	243	380	618	543
10	250	165	250	275	448	641	661
12	300	178	270	280	505	750	785
14	350	190	290	325	535	750	820
16	400	216	310	342	630	844	864
18	450	222	330	386	691	857	942
20	500	229	350	440.5	754	839.5	970
24	600	267	390	502	875	943	1093
28	700	292	430	547	905	1029	1288
32	800	318	470	603.5	921	1090	1420
36	900	330	510	663.5	1130.5	1330	1620
40	1000	410	550	708	1115	1294	1659
48	1200	470	630	833.5	1285	1650	1791
56	1400	530	710	933.5	1385	1597	1913
64	1600	600	790	1056	1592	1650	2056
72	1800	670	870	1173.5	1692		2211
80	2000	760	950	1263	1875		2310
88	2200	800		1376	2120		2520
96	2400	850		1500	2230		2600
104	2600	900		1630	2310		2735
112	2800	950		1750	2450		2885
120	3000	1000		1855	2610		3220

 

Welding Type:

 

Size		Face to face (mm)	H1	H2
NPS (inch)	DN (mm)	PN6/PN10/PN16/PN25 PN40/Class150/Class 300		Manual	Pneumatic	Electric
4	100	190	112	256	510	435
5	125	200	130	256	510	435
6	150	210	140	312	556	461
8	200	230	173	350	500	470
10	250	250	222	390	500	510
12	300	270	240	458	598	610
14	350	290	264	508	630	700
16	400	310	296	546	630	710
18	450	330	335	663	658	742
20	500	350	360	698	683	814
24	600	390	408	785	824	1000
28	700	430	503	797	880	1139
32	800	470	553	945	940	1270
36	900	510	613	1030	1190	1620
40	1000	550	663	1047	1190	1650
48	1200	630	773	1235		1626
56	1400	710	876	1383		1780
64	1600	790	1016	1527		1873
72	1800	870	1128	1793		1997
80	2000	950	1263	1875		2310
88	2200	1000	1376	2120		2520
96	2400	1100	1500	2230		2600
104	2600	1200	1630	2310		2735
112	2800	1300	1750	2450		2885
120	3000	1400	1855	2610		3220