China Replaceable Soft-Back Seat Lug Butterfly Valve

TYPE NO.: ZCLGBV-01

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: Worm Gear, Electric Actuator, Pneumatic Actuator.

Sample: available

Basic Info of Soft Seal Lug Butterfly Valve

The dovetail replaceable soft back seat of the China lug butterfly valve refers to the fully lug wafer butterfly valve with the EPDM soft seat, which can be replaced. This can reduce the cost when the seat is broken.
Excellent sealing and chemical resistance: EPDM valve seat has high elasticity and resilience, so it can effectively seal the valve and prevent leakage. Besides, it has excellent chemical stability, can resist corrosion and erosion from a variety of chemicals, and is suitable for various media.
Temperature adaptability: EPDM valve seats can work normally in a wide temperature range, with good heat resistance and cold resistance from minus 20 to 80 degrees Celsius.
Lug design: Lug butterfly valve has a lug design. It can reduce the erosion of the valve seat and sealing ring by the medium, and improve the service life and reliability.
Centerline design: This lug butterfly valve adopts a centerline design, which makes the valve action more stable and accurate, reduces the opening and closing torque, and improves operating performance and ease of use.
The origin of the Lug butterfly valve is China.

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	øD	øD1	L	L1	H	H1	H2	∅2	ø3	4-ødl	T*T
DN50	76.3	52.8	43	46	30	140	60	70	90	10	11*11
DN65	89	64.6	45.6	49	30	150	67	70	90	10	11*11
DN80	103.9	79.1	45.6	48	30	160	87	70	90	10	11*11
DN100	135	104.4	52.0	56	30	180	105	70	90	10	11*11
DN125	159	123.3	56.0	60	30	190	118	70	90	10	14*14
DN150	188.4	155.6	56.0	60	30	210	130	70	90	10	14*14
DN200	238.2	202.5	60.0	64	35	235	166	102	125	12	17*17
DN250	292.4	250.5	68.0	72	35	270	197	102	125	12	22*22
DN300	344.2	301.6	78.0	83	35	305	231	102	125	12	22*22
DN350	375.2	333.4	78.0	83	35	360	255	125	150	14	22*22
DN400	439.5	389.6	102.0	106	50	381	293	140	175	18	27*27
DN450	490.5	440.5	114.0	118	50	425	325	140	175	18	27*27
DN500	535.4	491.6	127.0	132	50	470	363	140	175	18	36*36
DN600	653.7	592.5	153	159	60	565	425	165	210	22	36*36