DN800 Two-way Sealing CF8 Disc Flanged Butterfly Valve

Size Range: DN50-DN2000

Pressure Rating:PN6 / PN10 / PN16 / 150LB

Body: Ductile Iron(GGG40/50)

Disc: DI(Ni lined), WCB (A216), Stainless Steel(SS304/SS316/SS304L/SS316L) , Duplex Stainless Steel(2205/2507)

Seat: Rubber(EPDM/Viton/NBR)

Actuator Options: Hand Lever(≤DN250), Worm Gear, Electric Actuator, Pneumatic Actuator.

Sample: available

This type of valve is commonly used in industrial applications to isolate the flow of liquids or gases.

Double flange connection: The most common and robust connection method for butterfly valves. This connection allows the butterfly valve to be installed between two pipes.

Two-way sealing flange butterfly valve refers to a butterfly valve that seals in both directions, as opposed to a one-way butterfly valve. This means that good sealing performance can be achieved regardless of the direction from which the medium enters.
Vulcanized seat: Rubber is integrally molded with the butterfly valve body through high-temperature vulcanization. This method creates a tight bond between the seat and the body, making them difficult to separate. Therefore, it is an irreplaceable type of seat. Butterfly valves with this type of seat can also be used at the end of pipelines.
Double stem design: Flattens the valve disc, resulting in greater flow rate, lower flow resistance, and higher mechanical strength.

Butterfly Valve Seat Vulcanization Process

Parts	Ductile Iron type	WCB type	Stainless Steel Type	Duplex Stainless Steel Type
Body	Cast Iron(GG25) Ductile Iron(GGG40/50)	A216 A217 A105(forged)	SS304/ CF8 SS316/CF8M SS304L/CF3 SS316L/CF3M	2205 2507 1.4529
Disc	Ductile Iron with Ni coated Ductile Iron with nylon coated Ductile Iron with PTFE/EPDM lined Stainless Steel Duplex Stainless Steel Bronze		SS304/ CF8 SS316/CF8M SS304L/CF3 SS316L/CF3M 2205 2507 1.4529	2205 2507 1.4529
Seat	NBR, EPDM, PTFE, Viton, Hypalon, Silicon, PFA
Stem	SS416, SS431, SS304, SS316, Duplex Stainless Steel, Monel			Duplex Stainless Steel, Monel
Actuator	Hand Lever, Worm Gear, Electric, Pneumatic

SIZE	L	øD1	f	H1	H2	ø2	ø3	n-ød1	T*T	H	øF	K	KEY
DN50	108	52.6	3	139	80	70	90	4-10	11	30	——	——	——
DN65	112	64.3	3	146	89	70	90	4-10	11	30	——	——	——
DN80	114	78.8	3	150	95	70	90	4-10	11	30	——	——	——
DN100	127	104.0	3	177	114	70	90	4-10	11	30	——	——	——
DN125	140	123.3	3	179	125	70	90	4-10	14	30	——	——	——
DN150	140	155.7	3	201	139	70	90	4-10	14	30	——	——	——
DN200	152	202.4	3	230	170	102	125	4-12	17	40	——	——	——
DN250	165	250.4	3	267	198	102	125	4-12	22	40	——	——	——
DN300	178	301.5	4	298	223	102	125	4-12	22	45	——	——	——
DN350	190	333.3	4	310	254	125	150	4-14	22	45	——	——	——
DN400	216	389.6	4	340	278	140	175	4-18	27	50	——	——	——
DN450	222	440.5	4	375	315	140	175	4-18	27	50	——	——	——
DN500	229	491.6	4	430	348	140	175	4-18	36	50	——	——	——
DN600	267	592.5	5	500	410	165	210	4-22	36	60	——	——	——
DN700	292	695.0	5	560	480	254	300	8-18	——	80	63.35	72.15	18*70
DN800	318	794.7	5	620	530	254	300	8-18	——	80	63.35	72.15	18*70
DN900	330	864.7	5	685	605	254	300	8-18	——	100	75	84.80	20﹡90
DN1000	410	965.0	5	735	670	254	300	8-18	——	100	85	95.80	22﹡90
DN1200	470	1160.6	5	917	780	298	350	8-22	——	100	105	117.80	28*90