Fully lined PTFE wafer butterfly valve for pharmaceutical

PTFE-lined butterfly valves deliver superior performance across the harshest corrosive applications, ensuring the safe and efficient handling of highly corrosive materials. They offer high CV values and zero leakage with bidirectional bubble-tight shutoff. These valves excel in the most demanding service areas in the Chemical, Petrochemical, Pulp and Paper, and Food industries. Metal disc material can be encapsulated with PTFE, and solid PTFE discs are also available.

Product Details

Product Features:
1. PTFE can be applied to highly corrosive chemical media.
2. It adopts a split design, making disassembly and replacement of parts more convenient.
3. The upper and lower cover design effectively prevents leakage.
4. The product has a wide range of applications: chemical industry, pharmaceuticals, food, papermaking, etc.

Pressure test		PN10	PN16
Shell		15bar	24bar
Seal	Water	11bar	17.6bar
Seal	Air	6bar	6bar

Working Temperature: -20~200℃

PTFE lined wafer butterfly valve.png

Material for main parts:

No.	Part Name	Materials	No.	Part Name	Materials
1	Cover	DI	9	Junk ring	Q235
2	Bottom body	DI	10	Spring plate	Steel
3	Pressing sleeve	Q235	11	Upper body	DI
4	O ring	EPDM	12	Pressing sleeve	Q235
5	Seat	EPDM	13	Gland	DI
6	Disc	DI+EPDM	14	Gasket	Silicone
7	Upper shaft	SS410	15	Wormgear	DI
8	O ring	EPDM

Dimension: mm

DN	L	A	B	∅F	n-∅d1	S	H	PN10			PN16
DN	L	A	B	∅F	n-∅d1	S	H	∅D	∅D1	N-∅d	∅D	∅D1	N-∅d
50	43	122	71	70	4-∅10	11	25	165	125	4-18	165	125	4-18
65	46	132	81	70	4-∅10	11	25	185	145	8-18	185	145	8-18
80	46	142	90	70	4-∅10	14	25	200	160	8-18	200	160	8-18
100	52	158	105	70	4-∅10	14	28	220	180	8-18	220	180	8-18
125	56	172	122	70	4-∅10	14	28	250	210	8-18	250	210	8-18
150	56	190	136	102	4-∅12	17	28	285	240	8-22	285	240	8-22
200	60	225	168	102	4-∅12	17	35	340	295	8-22	340	295	12-22
250	68	258	202	125	4-∅14	22	40	395	350	12-22	405	355	12-26
300	78	293	236	140	4-∅18	27	40	445	400	12-22	460	410	12-26
350	78	335	263	140	4-∅18	27	40	505	460	16-22	520	470	16-26
400	102	365	303	140	4-∅18	27	50	565	515	16-26	580	525	16-30
450	114	422	327	165	4-∅22	32	50	615	565	20-26	640	585	20-30
500	127	453	366	165	4-∅22	32	60	670	620	20-26	715	650	20-33
600	154	531	426	254	8-∅18	40	70	780	725	20-30	840	770	20-36

A PTFE lined butterfly valve is a type of butterfly valve that uses a disc made of PTFE (polytetrafluoroethylene) to control the flow of fluid. PTFE is a type of plastic that is known for its chemical resistance, high temperature tolerance, and low friction properties. The PTFE lining is applied to the disc, which is attached to a stem that runs through the valve body. As the stem is rotated, the disc moves into and out of the flow path, allowing or blocking the flow of fluid. The main advantage of a PTFE lined butterfly valve is that it offers excellent chemical resistance against a wide range of acids, alkalis, and other chemicals. This makes it suitable for use in applications where the fluid being transported is highly corrosive or toxic. PTFE lined butterfly valves are available in a wide range of sizes and pressure ratings, and can be made from materials such as carbon steel, stainless steel, and alloy steels. They are also available in different designs, such as wafer, lug and double flange, and also with different types of actuators and accessories to meet specific requirements. PTFE lined butterfly valves are known for its tight shut off and are available in both manual and actuated (pneumatic or electric) operation. They are also suitable for use in a wide range of temperatures, making them suitable for use in a variety of industries such as chemical, petrochemical, pharmaceutical, and power generation. They are also suitable for use in high-purity applications, as PTFE is highly resistant to contamination and does not release any toxic substances into the fluid.