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Pneumatic butterfly valve

Sanitary wafer pneumatic butterfly valve

Body material	304,316,316L
Disc material	304,316,316L
Seat material	Silicon rubber
Connection type	Wafer type
Valve structure	Midline
Pressure class	PN16KG / PN10KG
Pneumatic actuator	Double acting, single acting normally closed/ normally open
Pneumatic accessory	Solenoid valve, air filter reducing valve, positioner, handle,etc

ParametersSize chartWorking principle

Sanitary clamp pneumatic butterfly valve

Pneumatic sanitary butterfly valve, adopt standard electronic polishing treatment, smooth surface ensure the clean, no medium stockpile area, won’t produce potential pollution. Quick disassembling valve, the valve open and maintenance is easy, shortening process downtime. Widely used in such as food, medicine, cosmetics, clean steam, beverage, alcohol, biochemical industry process control occasions. Has the advantage of compact structure, convenient installation.

Standard technical parameters

Body

Nominal size: Clamp: Φ20-Φ219

Wafer: DN25-300mm

Body material: 304, 316, 316L

Connection type: Clamp, external thread, welding, wafer type

Pressure class: PN1.0MPa, PN1.6MPa

Structure type: Midline type

Valve components

Seat sealing: Silicone rubber, VITON, PTFE

Silicone rubber: -30~100℃

PTFE: -30℃～150℃

VITON: -30~150℃

Disc material: 304, 316, 316L

Stem material: 304

Applicable medium: Food, drinks, pharmaceutical, dairy products, beer,

and fine chemical industry, packaging machinery, canned machinery.

Design and manufacturing standards

Design and manufacture: ISO, DIN, IDF, SMS, 3A

Connection standard: JB/T 79.1-1994

Face to face dimension: GB/T 12221-2005

Pressure testing: GB/T13927-2008

Actuators

Pneumatic actuator
Control type	Function
Double acting	Failure to maintain
Single acting normally closed	Failure to close
Single acting normally open	Failure to open
Optional accessory	Solenoid valve, limit switch box, air filter relief pressure valve, positioner, manual device.

Outline size drawing

DN	Inch	GB Standard size (mm) PN10/PN16						Actuator size
DN	Inch	L	D1	D2	H1	H2	n-Φd	A	B	C
50	2	42	52.6	125	142	80	4-16	163	96	76
65	2 1/2	45	64.4	145	155	89	4-16	195	115	91
80	3	45	78.9	160	161	95	8-16	195	115	91
100	4	52	104.1	180	180	114	8-16	217	137	11
125	5	55	123.4	210	193	127	8-16	258	147	122
150	6	55	155.9	240	205	139	8-20	299	165	136
200	8	60	202.8	295	250	175	8-20/12-20	349	182	153
250	10	66	250.8	350/355	282	203	12-20/12-24	397	199	173
300	12	76	301.9	400/410	326	242	12-20/12-24	473	221	192
350	14	76	334	460/470	358	267	16-20/16-24	560	249	213
400	16	86	390	515/525	380	301	16-24/16-27	601	280	243
450	18	105	441	565/585	422	381	20-24/20-27	738	383	356
500	20	130	492	620/650	479	387	20-24/20-30	738	383	356
600	24	151	593	725/770	562	457	20-27/20-33	940	434	415

Pneumatic actuator working principle:

Double acting (POADA):

(Counterclockwise)

Compressed air to Port 2 forces the pistons outwards, causing the output shaft to turn

counterclockwise, while the air is being exhausted from Port 4.

(Clockwise) Air to Port 4 forces the pistons inwards, causing the pinion to turn clockwise

while the air is being exhausted from Port 2.

Single acting (POASR):

(Counterclockwise)

Compressed air to Port 2 forces the pistons outwards, causing the springs to compress,

the pinion counterclockwise while air is being exhausted from Port 4.

(Clockwise)

Loss of air pressure, the stored energy in the springs forces the pistons inwards,

the pinion turns clockwise, while air is being exhausted from Port 4.