Fluorine Lining Control Butterfly Valve

Body Form: Straight through casting butterfly valve
Nominal Diameter: DN50–1000mm
Nominal Pressure: PN1.0, 1.6MPa, Class150Lb
Flange Standard: HG/T20592-2009, ANSI B16.5, JIS B220
Connection Form: Flange type, clamp type
Bonnet Form: A pose
Gland Type: Gland pressure type
Sealing Packing: V-type polytetrafluoroethylene packing, flexible graphite packing
Plate Form: Vertical plate (butterfly)

Product Overview

The pneumatic fluorine lining control butterfly valve is composed of a pneumatic piston actuator and a PTFE-sealed butterfly valve. It is suitable for situations requiring corrosion resistance, cleanliness, and operating temperatures below 180°C. The valve uses lining technology to cover flow passage components, disc, valve body, and valve rod with thick polymer material. It exhibits excellent anti-corrosion performance and can be applied to acids, alkalis, salts, oxidants, reductants, organic solvents, and other media. This valve is ideal for gas, liquid, and semi-liquid applications in industries like chemical processing, petroleum, medicine, food, iron and steel smelting, papermaking, and hydropower systems.

Model Preparation

Code Category	Code	English Meaning
Product	D	Butterfly Valve
Drive Type	6	Pneumatic
Drive Type	9	Electric
Connection Type	41	Flanged Triple-Eccentric Type
Connection Type	71	Wafer (Centerline) Type
Lining Material	F46	FEP
Lining Material	FPA	PFA

Product Features

Small size, lightweight, easy to install and maintain.
Excellent sealing performance with zero leakage and long service life.
Optimal linear flow characteristics and regulation performance.
Simple structure, quick switching, and 90-degree rotation for opening and closing.
Can replace gate valves, globe valves, plug valves, and other valve types.
Supports pneumatic and electric devices for remote and program control.
Adaptable lining material allows use with various media types.

Specification Parameters

Technical Parameters

Item	Specification
Body Form	Straight-through Casting Butterfly Valve
Nominal Diameter	DN50–1000 mm
Nominal Pressure	PN1.0, PN1.6 MPa, Class 150 lb
Flange Standard	HG/T 20592-2009, ANSI B16.5, JIS B220
Connection Form	Flanged Type, Wafer (Clamp) Type
Bonnet Form	Integral Type (One-piece)
Gland Type	Compression Gland Type
Sealing Packing	V-type PTFE Packing, Flexible Graphite Packing
Disc Type	Vertical Plate Type (Butterfly Disc)

Item	Specification
Flow Characteristic	Equal Percentage, Quick Opening, Linear
Actuator Type	GT Series, SR Series, AT Series, AW Series, THQGSY Series; Single-acting and Double-acting Pneumatic Actuators
Air Supply Pressure	400–700 kPa
Air Interface	G1/4″, G1/8″, G3/8″, G1/2″
Ambient Temperature	−30 ~ +70°C
Action Mode	Single-acting actuator: Fail Close (FC) or Fail Open (FO) depending on configuration (spring return). Double-acting actuator: Position maintained (Fail Last, FL) on air loss.
Optional Accessories	Positioner, Solenoid Valve, Air Filter Regulator (FRL), Position Lock-up Valve, Limit Switch, Valve Position Sensor

Part Material

Name	Material
Body / Seat	WCB, LCB, CF8, CF8M, CF3, CF3M
Disc (Butterfly Plate)	WCB, 304, 316, 316L
Sealing Ring	Fluoroelastomer (FKM), PTFE
Lining Material	PO, PE, PP, F46 (FEP), F4 (PTFE), PFA
Stem	17-4PH, 2Cr13, Stainless Steel
Packing	V-type PTFE Packing

Main Performance Parameters

Item	Specification
Nominal Diameter (mm)	50–500
Nominal Pressure (PN, MPa)	0.6 / 1.0 / 1.6
Strength Test Pressure (MPa)	0.9 / 1.5 / 2.4
Sealing Test Pressure (MPa)	0.66 / 1.1 / 1.76
Low Pressure Air Test (MPa)	0.6 / 0.6 / 0.6
Applicable Medium	Concentrated sulfuric acid, hydrochloric acid, nitric acid, hydrofluoric acid, aqua regia, and various organic solvents and other highly corrosive media
Return Difference (%)	With positioner: ≤2% of full travel
Intrinsic Error (%)	With positioner: ≤±2% of full travel
Leakage	ANSI B16.104 Class V
Adjustable Range	50:1

Main External Connection Dimensions of PN10

DN	NPS	L	D	K	d	C	f	n-Φz	H
50	2″	108	165	125	100	18	3	4-Φ18	63
65	2 1/2″	112	185	145	120	18	3	8-Φ18	70
80	3″	114	200	160	135	20	3	8-Φ18	83
100	4″	127	220	180	155	20	3	8-Φ18	105
125	5″	140	250	210	185	22	3	8-Φ22	115
150	6″	140	285	240	210	22	3	8-Φ22	137
200	8″	152	340	295	265	24	3	8-Φ22	164
250	10″	165	395	350	320	26	3	12-Φ22	206
300	12″	178	445	400	370	26	3	12-Φ22	230
350	14″	190	505	460	430	26	4	16-Φ22	248
400	16″	216	565	515	480	26	4	16-Φ26	289
450	18″	222	615	565	530	28	4	20-Φ26	320
500	20″	229	670	620	580	28	4	20-Φ26	343
600	24″	267	780	725	680	34	5	20-Φ30	413

Main External Connection Dimensions of PN16

DN	NPS	L	D	K	d	C	f	n-Φz	H
50	2″	108	165	125	100	18	3	4-Φ18	63
65	2 1/2″	112	185	145	120	18	3	8-Φ18	70
80	3″	114	200	160	135	20	3	8-Φ18	83
100	4″	127	220	180	155	20	3	8-Φ18	105
125	5″	140	250	210	185	22	3	8-Φ22	115
150	6″	140	285	240	210	22	3	8-Φ22	137
200	8″	152	340	295	265	24	3	8-Φ22	164
250	10″	165	405	355	320	26	3	12-Φ22	206
300	12″	178	460	410	375	28	4	12-Φ26	230
350	14″	190	520	470	435	30	4	16-Φ26	248
400	16″	216	580	525	480	32	4	16-Φ30	289
450	18″	222	640	585	550	40	4	20-Φ30	320
500	20″	229	715	650	610	44	5	20-Φ33	343
600	24″	267	840	770	720	54	5	20-Φ36	413

Main External Connection Dimensions of PN25

DN	NPS	L	D	K	d	C	f	n-Φz	H
50	2″	108	165	125	100	20	3	4-Φ18	63
65	2 1/2″	112	185	145	120	22	3	8-Φ18	70
80	3″	114	200	160	135	24	3	8-Φ18	83
100	4″	127	235	190	160	24	3	8-Φ22	105
125	5″	140	270	220	190	26	3	8-Φ26	115
150	6″	140	300	250	215	28	3	8-Φ26	137
200	8″	152	360	310	275	30	3	12-Φ26	164
250	10″	165	425	370	335	32	3	12-Φ30	206
300	12″	178	485	430	395	34	4	16-Φ30	230
350	14″	190	555	490	450	38	4	16-Φ33	248
400	16″	216	620	550	505	40	4	16-Φ36	289
450	18″	222	670	600	550	46	4	20-Φ36	320
500	20″	229	730	660	610	48	5	20-Φ36	343
600	24″	267	845	770	720	58	5	20-Φ39	413

Specification Applications

The Fluorine Lining Control Butterfly Valve is an ideal solution for applications requiring corrosion resistance, cleanliness, and precise flow regulation. It is widely used in chemical processing, petroleum, pharmaceuticals, food and beverage, iron and steel smelting, papermaking, hydropower, and wastewater treatment industries. This valve is designed for handling aggressive media, including acids, alkalis, salts, oxidants, and organic solvents, as well as high-purity and semi-liquid materials. With its compact design, excellent sealing performance, and ability to operate at temperatures below 180°C, the valve provides reliable closure and flow control for gas, liquid, and semi-liquid systems.