Wholesale Wafer bf valve PTFE seat gear box operation Factories, Factory

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Wholesale Wafer bf valve PTFE seat gear box operation Factories, Factory

Type: Concentric Resilient Seated

Series: D71X

Size: DN40-DN600/2â€-24â€

Pressure rating: PN6/PN10/PN16/5K/10K/150LB

Design standard: EN 593, API 609

Service: OEM&ODM

The PTFE seat butterfly valve is specifically designed for corrosion-resistant and high-purity applications.

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Product Description

Valve Type:	Wafer butterfly valve	Structure:	Concentric
Standard:	EN593	Workmanship:	Investment casting
Sealing direction:	Bidirectional	Sealing grade:	Zero leakage
Temperature:	-20°C < T < 120°C	Operation:	Handle/Lever

Characteristics

PTFE butterfly valve is a quarter turn valve that controls flow by rotating the valve disc inside the pipeline. Rotate the actuator to rotate the valve stem and disc 90 degrees. When the disc is perpendicular to the flow direction, the valve is completely closed; When the valve disc is parallel to the flow direction, the valve is fully opened, and the position between the two can be used to adjust the flow rate.

Key Advantages

Super strong corrosion resistance performance: The PTFE lining on the inner cavity of the valve body and the surface of the butterfly plate has extremely high stability against most corrosive media such as strong acids (sulfuric acid, hydrochloric acid), strong bases, organic solvents, and salt solutions.
Compact structure, easy installation: The clamping design uses double headed bolts to directly clamp between two pipeline flanges, occupying minimal space. Especially suitable for scenarios with dense pipelines and limited installation space.
Excellent sealing performance and low leakage rate: Combined with PTFE valve seat and eccentric structure design, it achieves a tight fit and zero leakage effect. The low friction characteristics of PTFE also extend the sealing life.

Application Scenarios

In the chemical industry, it is a standard configuration for production lines such as sulfuric acid and chlor alkali; In the pharmaceutical industry, its clean characteristics that comply with GMP standards make it suitable for sterile medium delivery systems; In the desulfurization system of the power industry, it effectively solves the problem of valve flushing caused by limestone slurry.

Material Specifications

Body		Disc		Stem	Bushing	Seat
Name	Code	Name	Code	Name	Name	Name	Code	Temp Range
Cast iron	Z	Plated ductile iron	B1	Stainless steel	Lubrized bronze	NR	X1	-20~+85℃
Ductile iron	Q	Aluminum bronze	B2	-	-	Hypalon	X2	-23~+121℃
Aluminum bronze	T	Stainless steel	B3	-	-	EPDM	X3	-23~+121℃
Stainless Steel	P	Titanium steel	B4	-	-	Neoprene	X4	-7~+93℃
CF8M	R	CF8M	B5	-	-	NBR	X5	-23~+100℃
Carbon steel	C	Carbon steel	B6	-	-	Wear rubber	X6	-10~+100℃
CF8	-	CF8	B7	-	-	VITON	X7	-23~+200℃
-	-	-	-	-	-	PTFE	F4	+10~+150℃

Packing

Standard export wooden case packaging ensures safe transportation.

Dimensions

DN		A	B	C	D	L	H	D1	n-Φ	K
50	2"	161	80	42	52.9	32	84.84	120	4-Φ23	77
80	3"	181	95	45.2	78.8	32	61.23	160	8-Φ18	77
100	4"	200	114	52.1	104	32	70.80	185	4-Φ24.5	92
150	6"	226	139	55.8	155.6	32	91.08	238	4-Φ25	92
200	8"	260	175	60.6	202.5	45	112.89	295	4-Φ25	115
300	12"	337	242	76.9	301.6	45	105.34	407	4-Φ29	140

Frequently Asked Questions

Q1: What are the main benefits of using PTFE lining in butterfly valves? PTFE lining provides exceptional chemical stability and corrosion resistance, making the valve ideal for handling strong acids, bases, and organic solvents while protecting the metal body.

Q2: Can this wafer butterfly valve achieve zero leakage? Yes, the combination of a high-quality PTFE seat and precision disc design allows for a bidirectional zero leakage sealing effect under standard working conditions.

Q3: Is the wafer design suitable for limited installation spaces? Absolutely. The wafer design is compact, with a body thickness about one-third that of traditional flange valves, making it perfect for dense pipeline layouts.

Q4: What temperature range can the PTFE butterfly valve handle? The typical operating temperature range for these valves is between -20°C and +120°C, depending on the specific seat material selected.

Q5: Which industries commonly use these valves? They are widely used in chemical processing (sulfuric acid/chlor alkali), pharmaceuticals (sterile systems), and power plant desulfurization systems.

Q6: What operation methods are supported for this valve? This valve can be operated manually via a handle/lever, or it can be equipped with gearboxes, pneumatic actuators, or electric actuators for automated control.