Pneumatic Wafer Butterfly Valves Factory China

Inquire Now Double Offset Butterfly Valves

product description

Pneumatic wafer butterfly valve consists of rubber seal, valve plate (made of carbon steel or stainless steel) and valve stem. Applicable temperature is 80～120℃. It is widely utilized in food, pharmacy, chemical industry, petroleum and other industries to regulate flow or closure medium.

Characteristics of Pneumatic Wafer Butterfly Valve

1. Novel design, unique structure, light weight, rapid open and close

2. Small torque, convenient operation

3. Can be install in any position and it is convenient maintain.

4. Seal can be replaced and realize bidirectional sealing and zero leakage.

5. Aging resistance, corrosion resistance and long service life.

Standards

Manufacturing standard: GB/T2238-1989

Flange connecting dimension: GB/T9113.1-2000;GB/T9115.1-2000;JB78

Face to face standard: GB/T12221-1989

Pressure test: GB/T13927-1992;JB/T9092-1999

Actuator

Pneumatic wafer butterfly valve utilizes GT pneumatic actuator, having double-acting and single-acting (spring reset). It is drove by gear, safe and reliable. Large diameter valve utilizes AW pneumatic actuator. It has reasonable structure, large torque output, double-acting and single-acting.

1. Gear dual piston, large output torque, small volume

2. Cylinder, made of aluminum gold, has light weight and beautiful form.

3. Manual handle can be installed on the top or at the bottom.

4. Gear connection can regulate opening angle and rated flow.

5. Actuator can ba attached with electric signal indication or other attachment to realize automation.

6. ISO05211 standard connection plate makes the production installation and change more easily.

Options of accessories:

Accessories based on different control or requirements

Cut off accessories: single solenoid valve, double solenoid valve, limit switch echo

Regulated accessories: electric positioner, pneumatic positioner, electric converter

Air supply treatment accessories: air filtrating pressure reducing valve, air supply FRL

Manual handle: HVSD manual handle

Main Technical Parameter

Nominal diameter	DN（mm）	50～2000
Nominal pressure	PN（MPa）	0.6	1.0	1.6
Test pressure	Shell test	0.9	1.5	2.4
	Seal test	0.66	1.1	1.76
	Air test	0.6	0.6	0.6
Applicable medium	Air, water, sewage, vapor, gas, oil, etc
Driving mode	Manual, worm gear, pneumatic, electric

Components	Materials
Valve body	Spheroidal graphite steel, cast steel, alloy steel, stainless steel
disc	Grey cast iron, spheroidal graphite steel, cast steel, stainless steel, special materials
Seal ring	Rubber, PTFE
Valve stem	2Cr13, stainless steel
Packing	O-ring, flexible graphite

Seal material selection and applicable temperature

Materials	Chloroprene rubber	Nitril butadiene rubber	Ethylene propylene rubber	Teflon	Silicon rubber	Fluorine rubber	Crude rubber	Nylon
Abbreviation	CR	NBR	EPDM	PTFE	SI	VITON	NR	PA
Model	X or J	XA or JA	XB or JB	F, XC or JC	XD or JD	XE or JE	X1	N
Maximum temperature	82℃	93℃	150℃	232℃	250℃	204℃	85℃	93℃
Minimum temperature	-40℃	-40℃	-40℃	-268℃	-70℃	-23℃	-20℃	-73℃
Applicable temperature	0~+80℃	-20~+82℃	-40~+125℃	-30~+150℃	-70~+150℃	-23~+150℃	-20~+85℃	-30~+93℃

Dimensions

Nominal diameter		Face to Face Dimension (standard value)	Outline dimension (reference value)				Connection dimension (standard value)
Nominal diameter		Face to Face Dimension (standard value)	Outline dimension (reference value)				0.6MPa		1.0MPa		1.6MPa
Mm	Inch	L	H	H0	A	B	D0	n-d	D0	n-d	D0	n-d
50	2	43	63	315	180	65	110	4-14	125	4-18	125	4-18
65	21/2	46	70	330	180	65	130	4-14	145	4-18	145	4-18
80	3	46	83	390	245	72	150	4-18	160	8-18	160	8-18
100	4	52	105	431	240	72	170	4-18	180	8-18	180	8-18
125	5	56	115	455	240	72	200	8-18	210	8-18	210	8-18
150	6	56	137	626	350	93	225	8-18	240	8-22	240	8-22
200	8	60	164	720	350	93	280	8-18	295	8-22	295	12-22
250	10	68	206	800	550	350	335	12-18	350	12-22	355	12-26
300	12	78	230	860	600	350	395	12-22	400	12-22	410	12-26
350	14	78	248	883	600	350	445	12-22	460	16-22	470	16-26
400	16	102	289	972	600	350	495	16-22	515	16-26	525	16-30
450	18	114	320	1043	750	380	550	16-22	565	20-26	585	20-30
500	20	127	343	1098	750	380	600	20-22	620	20-26	650	20-33
600	24	154	413	1236	750	380	705	20-26	725	20-30	770	20-36
700	28	165	478	1431	750	380	810	24-26	840	24-30	840	24-36
800	32	190	525	1488	750	380	920	24-30	950	24-33	950	24-39