PTFE Lining Anti-Corrosion Control Valve

Body type: Straight through type, angle type, jacket insulation type
Plug type: Multistage throttle spool
Nominal diameter: DN15~350mm, NPS 1/2″~14″
Nominal pressure: PN 0.6~2.5MPa; CLASS 150LB
Applicable temperature: -30~+180°C (Optional according to working conditions)
Type of connection: Flange (RF side, FM side)
Flange distance: Meet IEC 60534, Non-standard customization
Gland type: Bolt compression type
Sealing gasket: Serrated metal gasket
Packing: PTFE, flexible graphite
Actuator: Pneumatic actuator, Electric actuator

Product Overview

The series of PTFE lining anti-corrosion control valve is produced by TangoValve Group. High pressure injection molding process is adopted for the contact medium part; and its internal lining is made of PTFE corrosion-resistant material, which can resist corrosion and aging by the media, such as hydrochloric acid, sulfuric acid, nitric acid, hydrofluoric acid, etc. The valve is sealed with PTFE bellows, and widely used in theprocess control of acid, alkali and other strong corrosive media, as well as toxic and volatile gas and liquid media in various processes.

Model Preparation

Z	Actuator
Z Series Control Valve	J: Pneumatic diaphragm actuator R: Electric 3810L actuator D: Electric PSL actuator
H	Structural Style
H Straight Stroke	PF: Fluorine-lined single-seatcontrol valve

Product Features

The series of PTFE lining anti-corrosion control valve is of the fluorine lining structure on valve body and internal parts, which effectively obstructs the corrosion of metal materials in the valve caused by corrosive medium. The inner cavity of the meta valve body is processed by tooth type processing, which makes the lining completely connected with the metal, and extends the service life and performance of the lining-F46 bellows seal and PTFE packing are used to seal the valve rod, which completely eliminates the possibility of medium leakage from the valve rod. The unbalanced full lining structure is especially suitable for the extremely corrosive medium under the condition of low pressure and normal temperature.

Design Features

1. With top guide structure

2. The inner cavity and inner parts of the valve body are all covered with Teflon.

3.Tefon bellows seal can be installed

4.Double seal protection,no leakage

5.Suitable for corrosive occasions

Carbon steel for body material*

No.	Component	Material
1	Body	WCB	LCB	WC9
2	Lining	F46/F4
3	Plug	304	304	304
4	Gasket	PTFE
5	Screw nut	304	304	304
6	Bonnet	WCB	LCB	WC9
7	Stem	304	304	304
8	Packing	PTFE
9	Lock nut	304	304	304
10	Pressing sleeve	WCB	LCB	WC9
11	Plate	WCB	LCB	WC9

Body Materials Stainless Steel*

No.	Component	Material
1	Body	CF8	CF8M	CF3M
2	Lining	F46/F4
3	Plug	304	316	316L
4	Gasket	PTFE
5	Screw nut	304	316	316L
6	Bonnet	CF8	CF8M	CF3M
7	Stem	304	316	316L
8	Corrugated pipe	PTFE
9	Packing	PTFE
10	Lock nut	304	316	316L
11	Pressing sleeve	CF8	CF8M	CF3M
12	Plate	CF8	CF8M	CF3M

Note: 1.The above is of standard confguration structure; The valve seat is metal seal, and the valve seat is soft seal, grade Vl optional. lt can provide valve trim of spray welding cemented carbide. 2.The conventional materialis carbon steel and stainless steel, and the special material regulating valve products can be customized according to the user’s work conditions.

Specification Parameters

Specifcation Parameter

Inside Diameter (mm)		20	25	32	40	50	65	80	100	125	150
Inside Diameter (in)		3/4″	1″	1-1/4″	1-1/2″	2″	2-1/2″	3″	4″	5″	6″
Flow Coefficient (Kv)		5	10	16	25	38	63	80	120	220	300
Pneumatic Actuator		HA/B-23				HA/B-34			HA/B-45
Pneumatic Actuator		350 cm²				560 cm²			900 cm²
Mode of Action	Spring Range	Allowable differential pressure(MPa)
Gas Opening	20–100 KPa	1.16	0.7	0.44	0.28	0.18	0.17	0.11	0.07	0.07	0.05
	40–200 KPa	3.34	2.14	1.31	0.84	0.53	0.51	0.33	0.21	0.22	0.15
	80–240 KPa	6.4	4.99	3.05	1.95	1.25	1.18	0.78	0.5	0.51	0.36
Gas Off	20–100 KPa	2.23	2.14	0.87	0.56	0.35	0.34	0.22	0.14	0.15	0.1
	40–200 KPa	6.4	6.4	5.86	3.64	2.3	2.21	1.43	0.91	0.95	0.66
	80-240Kpa	6.4	6.4	5.04	3.18	3.06	1.98	1.26	1.32	1.32	0.92
Electric Actuator		Allowable differential pressure(MPa)
Thrust(N)	800	2.38	1.52
	2000	4.77	3.05	1.86	1.19	0.76
	3000			2.79	1.79	1.14
	5000			4.66	2.98	1.91	1.13	0.6	0.47
	6500						1.35	0.8	0.57	0.39	0.26
	10000									0.61	0.42

Actuator parameters

Model	Pneumatic film actuator	Electronic electric actuator
Form	ZH22~ZH56	3810L, RSL
Type	Multi spring	Intelligent integrated type
Purpose	Adjustment, switch	Regulating
Drive	Air pressure (spring range): 140 (20~100) KPa G 240 (40~200) KPa G 280 (80~240) KPa G	Power supply: AC 220 V ±10% 50Hz AC 380 V ±10% 50Hz
Joint	Rc 1/4	Common type: 2–PF(G1/2”) Flameproof type: 2–PF(G3/4”)
Positive Action	Air pressure increases to push the valve to close	Control signal increases to push the valve to close
Reaction	Air pressure increases to push the valve open	Control signal increases to push the valve open
Control Signal	4~20mA.DC (With positioner)	Input output 4~20mA.DC
Lag	≤1% FS (With positioner)	≤0.8% FS
Linearity	2% FS (With positioner)	≤±1% FS
Ambient Temperature	-10°C ~ +70°C
Surface Coating	Black phosphating treatment Actuator: Acrylic polyurethane paint
Optional Accessories	Optional accessories, Hand wheel, Magnetic valve, Travel switch, Lock up valve	Heater

Main Performance Parameters

Flow Characteristics	Equal percentage, Straight line
Adjustable Range	50:01
Rated Cv Value	Equal percentage: 10~1400 Straight line: 11~1500
Allowable Leakage	Hard seal: Level-IV (0.01% rated flow of valve) Soft seal: Level-V
Drive Mode	Pneumatic	Electric
Intrinsic Error (%)	±1.0	±1.0
Return Difference (%)	≤1.0	≤1.0
Dead Zone (%)	≤0.6	≤1.0
Constant Point Deviation (%)	±2.5	±2.5
Rated Stroke Deviation (%)	≤2.5	≤2.5

Connection Dimension of Pneumatic Control Valve

DN (In)	20 (3/4″)	25 (1″)	32 (1-1/4″)	40 (1-1/2″)	50 (2″)	65 (2-1/2″)	80 (3″)	100 (4″)	125 (5″)	150 (6″)
L	150	160	180	200	230	290	310	350	450	480
H	52.5	57.5	75	75	85.5	92.5	100	110	142.5	158
H1	132	132	158	170	179	214	221	234	270	294
H2	285	285	285	285	285	360	360	360	470	470
H3	336	338	402	402	405	627	628	635	698	702
H4	153	153	153	153	153	181	181	181	247	247
A	200	200	200	200	200	240	240	240	350	350
C	282	282	282	282	282	360	360	360	470	470

Connection Dimension of Electric Control Valve

DN (In)	20 (3/4″)	25 (1″)	32 (1-1/4″)	40 (1-1/2″)	50 (2″)	65 (2-1/2″)	80 (3″)	100 (4″)	125 (5″)	150 (6″)
L	150	160	180	200	230	290	310	350	450	480
H	52.5	57.5	75	75	85.5	92.5	100	110	142.5	158
H1	132	132	158	170	179	214	221	234	270	294
H2	373	373	456	456	538	538	548	548	725	725
H3	336	338	402	402	405	627	628	635	698	702
H4	88	88	88	88	88	95	95	95	95	110
A	225	225	225	255	255	255	255	255	310	310

Note: 1.The dimensions in the table are standard data without accessories. The dimensions of accessories are calculated according to the actual configuration.2.Due to the technical innovation and improvement of the product, the size may change. Please contact the technical department of the Company for the latest information. 3.The actuated valve can be customized according to the actual size.

Specification Applications

PTFE lining anti-corrosion control valves are essential in industries requiring reliable flow control of aggressive and corrosive media. Their exceptional chemical resistance makes them suitable for handling strong acids, alkalis, and other reactive substances. These valves are commonly utilized in chemical processing plants, oil and gas refineries, pharmaceutical manufacturing, and water treatment facilities. The PTFE lining ensures durability and longevity, reducing maintenance needs and enhancing operational efficiency. Additionally, their ability to operate effectively across a wide temperature range broadens their applicability in various industrial processes.