Fluorine lined pnuematic butterfly valve

Body material	WCB,SS304,Ductile iron
Disc material	SS304,ductile iron, WCB, 316
Seal mateiral	Fluorine lined
Nominal pressure	PN16KG,PN10KG
Structure type	Midline
Control type	Single acting, double acting
Air supply	3-8bar
Pneumatic accessory	Solenoid valve, limit switch box, positioner, handle wheel, etc

Product parametersSize and dataworking principle

Fluorine lined pneumatic butterfly valve

The fluorine lined butterfly valve seat and valve plate is made by the PTFE, has both the common butterfly valve mechanical strength, and also can play strong resistance to chemical medium properties of PTFE or PA. The anticorrosion performance is excellent. It is applicable

to all kinds of acid、alkali 、salt and oxidant、reductant、organic solvent and other media. It

is widely used in chemical industry、petroleum、medicine、food、 steel melting、the papermaking 、the water and electricity system of gases、liquids、semifluid piping and container closure and adjust equipment.

Technical parameters

Body

Nominal size: DN50 –DN600mm

Body material: WCB, 304, 316

Connection type: Wafer type, flange, lug wafer type

Pressure class: PN1.0-1.6MPa

Structure type: Midline type

Valve components

Seat sealing: PTFE: -30~150℃

Disc material: WCB, 304, 316 lined PTFE

Stem material: SS410, 304

Applicable medium: Water, liquids, gas, oil, powder, steam, acid-base medium, etc.

Design and manufacturing standards

Design and manufacture: GB/T12238

Connection standard: JB/T 79.1-1994

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.

PTFE lined corrosive pneumatic butterfly valve

Wafer connection outline size drawing

Data information

DN	Inch	GB Standard size (mm) PN10/PN16
DN	Inch	L( Wafer )	L(Flange)	H	C	D1	n-d	kg	P	A
50	2	43	108	212	130	120	4-18	5	217	137
65	2 1/2	46	112	230	150	136.2	4-18	6	258	147
80	3	46	114	233	164	160	4-18/8-18	8	258	147
100	4	52	127	270	188	185	8-18	9	299	165
125	5	56	140	298	220	215	8-18	12	349	182
150	6	56	140	337	252	238	8-23	15	397	199
200	8	60	152	407	305	295	8-23/12-23	23	473	221
250	10	68	165	481	370	357	12-23/12-25	32	560	249
300	12	78	178	555	430	407	12-23/12-25	45	601	280
350	14	78	190	610	470	467	16-23/16-25	70	738	383
400	16	102	216	715	565	515	16-25/16-30	99	738	383
450	18	114	222	778	620	565	20-25/20-34	110	738	383
500	20	127	229	870	695	620	20-25/20-34	135	940	434

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.