worm-gear-EPDM-disc-wafer-butterfly-valve

Soft Seal EPDM Covered Disc Wafer Butterfly Valve

Size Range: DN50-DN3000

Pressure Rating:PN6 / PN10 / PN16 / 150LB

Body: Ductile Iron(GGG40/50), Carbon Steel(WCB A216), Stainless Steel(SS304/SS316/SS304L/SS316L) , Duplex Stainless Steel(2507/1.4529),

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

MOQ=1 SET

Customization/OEM: accept

Send Inquiry

Description

Soft Seat-Back EPDM Fully Lined Wafer Butterfly Valve

Basic Info

Fully Epdm lined butterfly valve refers to internal surfaces of the valve, including the disc and the body, are completely covered or lined with EPDM rubber.

Advanced sealing: EPDM material coating can effectively prevent leakage and ensure that fluid will not leak or penetrate into the valve structure, improving the safety and efficiency of the system.
Corrosion resistance: The outer layer of the valve disc is coated with EPDM material, which can withstand the erosion of various chemicals and corrosive media.
Replaceable seat: soft back seat EPDM seat is replacable, when it ages or breaks can save costs.
The turbine head uses the gear structure to amplify the operating torque, making the valve opening and closing easier, especially suitable for butterfly valves with a diameter of ≥250.
The turbine head can achieve more precise opening adjustment, which is convenient for users to use in occasions where precise flow control is required.
The wafer-type structure is more compact and suitable for installation environments with limited space. No additional flange accessories are required, reducing installation costs and time.
Wide application: EPDM fully lined butterfly valve is suitable for fluid control and treatment in various fields, such as water treatment, chemical industry, petroleum, pharmaceutical, food, etc.

Basic Info of PFA Seat Butterfly Valve

Material

Part Name	Material/Method
Body	Ductile Iron, Casting Iron, WCB, LCB/LCC, Stainless Steel, Duplex Stainless Steel, Aluminium Bronze
Disc	Ductile Iron(Coated/Lined), WCB, LCB/LCC, Stainless Steel, Duplex Stainless Steel, Aluminium Bronze
Seat	PFA, Rubber(EPDM/NBR/VITON), Nature Rubber, Silicon Rubber, PU, HNBR, Hypalon
Stem	304, 316, 420(2Cr13), 431, 1.4462, 17-4PH, Monel
Actuator	Handlever, Worm Gear, Electric, Pneumatic

Technical Parameters

ITEM	Standard
Design	EN593 \| API609
Face to Face	EN558 \| ISO5752 \| API608 \| BS5155-4
Top Flange	ISO5211
Flange Drilling	PN6 \| PN10 \| PN16 \| ASME B16.5 CL150 \| JIS 10K
Pressure Rating	PN6 \| PN10 \| PN16 \| PN25 \| CL150 \| JIS 10K
Tightness Test	ISO5208 \| API598 \| EN12266-1

Paraments of PFA Seat Butterfly Valve

SIZE	øD	øD1	L	L1	H	H1	H2	ø2	ø3	4-ød1	T*T
DN25	55	33	26	29	30	122	48	50	65	7	11
DN40	65	43.1	33	36	30	139	70	50	65	7	11
DN50	82	53.08	42.5	46.1	30	140	60	70	90	10	11
DN65	94	64.82	45.6	49	30	150	67	70	90	10	11
DN80	111.2	79.04	45.6	48.4	30	160	87	70	90	10	11
DN100	140	104.04	52	56	30	180	105	70	90	10	11
DN125	166	123.3	56	60	30	190	118	70	90	10	14
DN150	187	155.68	56	60	30	210	130	70	90	10	14
DN200	246.8	201.9	60	64	35	235	166	102	125	12	17
DN250	301.5	250.45	68	72	35	270	197	102	125	12	22
DN300	352	301.55	78	83	35	305	231	102	125	12	22
DN350	390	333.8	78	83	35	360	255	125	150	14	22
DN400	452	389	102	106	50	381	293	140	175	18	27
DN450	510	439.2	114	118	50	425	325	140	175	18	27
DN500	564	491.4	127	132	50	470	363	140	175	18	36
DN600	651	579	153	159	60	565	425	165	210	22	36