PTFE Coated Butterfly Valve(Wafer Type) Introduction

PTFE butterfly valve is in order to adapt to some corrosive environment with strong acid, strong alkali, petroleum, chemical, food and many other special areas of the needs of the valve body made of polytetrafluoroethylene, which has a strong anticorrosive effect. It can replace the stainless steel valve body under regular conditions, and has a higher cost performance. The butterfly valve's butterfly plate is installed in the diameter direction of the pipeline. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, and the rotation angle is between 0° and 90°, and the valve is fully open when rotated to 90°.

Features of PTFE butterfly valve

Corrosion resistance: polytetrafluoroethylene (PTFE) is a material with high chemical stability, able to resist the erosion of most acids, alkalis, salts and other corrosive media, so PTFE butterfly valve has excellent corrosion resistance.
Good sealing performance: Since the valve flap is made of polytetrafluoroethylene (PTFE) material, it has low friction coefficient and good self-lubricating performance, so PTFE lined butterfly valve can realize good sealing effect in the closed state, effectively preventing the leakage of media.
Light operation: The valve flap of PTFE lined butterfly valve adopts butterfly structure, which makes the opening and closing torque of the valve smaller, and the operation is light. At the same time, the transmission mechanism can adopt various forms, such as manual, electric, pneumatic, etc., which is convenient for users to choose according to the actual needs.
Long service life: Polytetrafluoroethylene (PTFE) material has good abrasion resistance and anti-aging properties, making PTFE lined butterfly valves have a long service life and can be operated stably for a long time.

PTFE Coated Butterfly Valve(Wafer Type) drawing

Standard of implementation

Category	Details
Type	Wafer
Face to Face	API609, BS5155, DIN3202, ISO5752
Flange	DIN, BS, UNI, ISO, ANSI, AS, JIS
Mounting Flange	ISO5211
Working Pressure	PN16 (200PSI)
Application	HVAC, Water Supply & Sewage, Food & Beverage, Chemical/Petrochemical/Processing, Power and Utilities, Paper and Pulp, Ship Building

Standard Materials Of Main Parts

No.	Name	Material	Qty
1	Body	CI/DI	2
2	Down Shaft	SS410	1
3	Liner (Seat)	PTFE	1
4	Butterfly Spring	Spring Steel	8
5	Disc	CF8M+PTFE	1
6	Up Shaft	SS410/SS304/SS316	1
7	Seat Enerqizer	Silicone	2
8	Pressing Sleeve	Stainless Steel	2
9	Bushing	PTFE	1
10	Bolt	SS304	2/4

Test Pressure:

CWP: 10 BAR	Shell	Seal
Hydrostatic	15BAR	11BAR
Air

Standard Specifications:

Standard	Specification
Design	API609
Inspection & Test	API598
End Standard	EN1092-2 PN6/10/16/AS "D""E"/JIS B2220 10K/ASME B16.5 150LB
Face to Face	API609

Dimensions:(mm)

Size	D1 150LB	D1 PN10	D1 PN16	D1 10K	L	CXC	ISO5211	K	E	n-Ø
DN50	120.7	125	125	120	43	9x9	F07	90	70	50
DN65	139.7	145	145	140	46	9x9	F07	90	70	65
DN80	152.4	160	160	150	46	9x9	F07	90	70	80
DN100	190.5	180	180	175	52	11x11	F07	90	70	100
DN125	215.9	210	210	210	56	14x14	F07	90	70	125
DN150	241.3	240	240	240	56	14x14	F07	90	70	150
DN200	298.5	295	295	290	60	17x17	F10	125	102	200
DN250	362	350	355	355	68	22x22	F10	125	102	250
DN300	431.8	400	410	400	78	22x22	F10	125	102	300