What is Wafer Rubber lined butterfly valve - Knowledge

The wafer rubber-lined butterfly valve is an industrial valve that combines a wafer-type connection design with rubber-lined sealing technology. It uses the rotation of the butterfly plate to control the flow and interruption of pipeline media. It offers advantages such as corrosion resistance, excellent sealing performance, and easy installation, and is widely used in industries such as chemical, water treatment, and power generation.

GNEE Group provides valve customization services. Send your drawings to obtain a customized wafer rubber-lined butterfly valve.

Features of Wafer Rubber-Lined Butterfly Valve:

1. This valve adopts a double eccentric structure, providing a tighter seal as it closes, ensuring reliable sealing performance.

2. The sealing pair is made of stainless steel and nitrile oil-resistant rubber, ensuring a long service life.

3. The rubber sealing ring can be located on the valve body or the butterfly plate, suitable for different media, allowing users to choose the appropriate option.

4. The butterfly plate adopts a frame structure, providing high strength, a large flow area, and low flow resistance.

5. The overall painted finish effectively prevents corrosion, and by simply changing the sealing material of the valve seat, it can be used with different media.

6. This valve has a bidirectional sealing function, and its installation is not affected by the direction of media flow or spatial location; it can be installed in any direction.

7. The rubber-lined butterfly valve structure allows for flexible, labor-saving, and convenient operation.

Applications of sealing materials for wafer rubber-lined butterfly valves

Seal Ring Material Code	Applicable Temperature	Applicable Medium
NR	≤85℃	Water, Air, Acids and Alkalis
CR	≤85℃	Water, Gas, Acids and Alkalis
NBR	≤100℃	Water, Oil Products
EPDM	≤120℃	Water, Steam, General Acids and Alkalis
FKM	≤150℃	Water, Steam, Strong Acids and Alkalis

Materials of main components of a wafer-type rubber-lined butterfly valve

Part Name	Material
Valve Body	Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel
Disc	Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel, Carbon Steel Coated with Rubber or Fluoroplastic
Valve Stem	Carbon Steel Plated with Nickel - Phosphorus, Stainless Steel
Valve Seat Seal Ring	Natural Rubber (NR), Chloroprene Rubber (CR), Nitrile Rubber (NBR), Ethylene Propylene Diene Monomer (EPDM), Fluororubber (FKM)
Worm Gear Device	Assembly

Main dimensions of the wafer-type rubber-lined butterfly valve

Nominal diameter DN	Nominal pressure MPa	Work pressure MPa	L mm	D mm	D1 mm	n-Φd mm	H1 mm	H2 mm	Do mm	H3 mm	A mm	B mm	Quality Kg/kilos
40	1.0	1.0	33	150	110	4-18	55	100	150	62	164	125	6
50			43	165	125	4-18	64	120	150	62	164	125	7
65			46	185	145	4-18	80	120	208	62	164	125	10
80			46	200	160	8-18	112	130	260	62	164	125	11
100			52	220	180	8-18	90	140	275	62	164	125	12
125			56	250	210	8-18	112	160	350	106	289	200	18
150			56	285	240	8-22	135	175	350	106	289	200	29
200			60	340	295	8-22	160	210	240	106	289	200	34.5
250		0.6	68	395	350	12-22	206	235	240	106	289	200	44
300			78	445	400	12-22	232	273	320	112	370	253	64.5
350			78	505	450	16-22	263	310	320	112	370	253	75.5
400			102	565	515	16-26	295	340	400	270	562	280	156
450			114	615	565	20-26	327	370	400	270	562	280	171.5
500			127	670	620	20-26	358	399	400	270	562	280	206.5
550		0.4	140	730	675	20-30	384	430	400	270	562	280	215
600			154	780	725	20-30	474	460	500	270	562	280	283
700			165	895	840	24-30	486	510	500	125	503	443	426
800			190	1015	950	24-33	591	672	500	200	513	531	550
900			203	1115	1050	28-33			500	200	513	531	1070
1000			216	1230	1160	28-36	721	800	550	273	713	815	1296

GNEE Wafer Rubber lined butterfly valve factory

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