Soft Back Seat WCB Wafer Butterfly Valve

The main difference between soft back seat wafer butterfly valve and hard back seat wafer butterfly valve is the seat material:

• 1. Compared with the hard-backed valve seat, the soft-backed valve seat has a wider contact surface with the pipe flange, and the installation and sealing performance is better, without the need for a special flange for butterfly valves;
• 2. The soft-backed valve seat is highly replaceable and does not require any special tools. The replacement can be completed;
• 3. The wall thickness of the hard-backed valve body is relatively thin, and the valve body is easily deformed. The wall thickness of the soft-backed valve body is larger than that of the hard-backed valve body, and the valve body is heavier. The different shape designs prevent the valve body from deforming. Deformation.
• 4. The vulcanization process of the soft-backed valve seat is more perfect, and there will be no phenomenon of immature rubber of the hard-backed valve seat. The rubber performance is more reliable.
• 5. The soft-backed butterfly valve has small torque.

SIZE	D1	D2	D3	N×φD	α°	F	G	A	B	C	E
DN50(2″)	52.6	100	120.6	4×19	45	52	266.7	273	161	43	32
DN100(4″)	104	156	190.5	8×19	22.5	52	266.7	346	200	52.1	32
DN150(6″)	155.6	212	241.3	8×22.	422.5	52	266.7	397	226	55.8	32
DN200(8″)	202.4	264	298.4	8×22.	422.5	52	359	485	260	60.6	45

SIZE		øK				4-ød0				øD	øD1	øD2	L	L1	H1	H2	H3	øD3	øD4	n-ød1	□	H4	W1	W2	øW3
		PN6	PN10	PN16	CL150	PN6	PN10	PN16	CL150
DN200	8〞	280	295	295	298.5	4-ø19	4-ø23	4-ø23	4-ø22.3	246	194	202	60	64	235	86	487	125	102	4-012	□17	35	75	238	300
DN250	10〞	335	350	355	362	4-ø19	4-ø23	4-ø28	4-ø25.4	301.5	241	250	68	72	270	86	553	125	102	4-ø12	□22	35	75	238	300
DN300	12〞	395	400	410	431.8	4-ø23	4-ø23	4-ø28	4-ø25.4	352	290	301	78	83	310	118	658	25	102	4-ø12	□22	35	81	227	300
DN350	14〞	445	460	470	476.3	4-ø23	4-ø23	4-ø28	4-ø28.6	390	325.4	333.3	78	83	360	118	733	150	125	4-ø14	□22	35	81	227	300
DN400	16〞	495	515	525	539.8	4-ø23	4- ø 28	4-ø31	4-ø28.6	452	377	387	102	106	380	150	821	175	140	4-018	□27	50	115	278	300
DN500	20〞	600	620	650	635	4-ø23	4-ø28	4-ø34	4-ø31.8	564	480	491.6	127	132	470	150	981	175	140	4-ø18	□27	50	115	278	300
DN600	24〞	705	725	770	749.3	4-ø26	4-ø31	4-ø37	4-ø35	649.5	579.9	592.5	153	159	495	180	1120	210	165	4-022	□36	60	144	304	300