Pfa Lined Metal Butterfly Valve
Products Description
PFA Lined Metal Butterfly Valve is engineered for zero-leakage, bidirectional shutoff in extremely corrosive, high-purity, or chemically demanding environments. With a fully molded PFA liner and over-molded disc, it ensures chemical resistance, vacuum compatibility, and ultra-clean performance. The metal core ensures mechanical strength while the PFA lining protects against harsh media-making it ideal for applications like semiconductor manufacturing, chlor-alkali, and ultrapure water systems.
Product Detail
|
Specification |
Description |
|
Valve Type |
PFA Lined Metal Butterfly Valve |
|
Liner Material |
Fully molded PFA (Perfluoroalkoxy Alkane) |
|
Disc/Stem Material |
17-4PH Stainless Steel (PFA over-molded) |
|
Body Material |
Ductile Iron |
|
Seat Energizer |
Silicone / Viton™ |
|
Pressure Rating |
Up to 232 psi (16 bar for DN 50–150) / 150 psi (10 bar for DN 200–600) |
|
Size Range |
NPS 2"–24" / DN 50–600 |
|
Temperature Range |
-20°F to 320°F / -29°C to 160°C |
|
Vacuum Rating |
Up to 0.0002 psia / 1.03×10⁻² torr |
|
Standards Compliance |
API 598, ISO 5208, API 609, MSS SP-67, ISO 5211, SIL 3, ISO 15848-1 |
|
Connection Types |
Wafer / Lug, Flanged (ASME/JIS/PN) |
|
Applications |
Chemical, Semiconductor, Chlor-Alkali, RO Systems, Ultrapure Water, Wastewater |
Product Advantages & Features
|
Feature |
Description |
|
Full PFA Lining (Body & Disc) |
Ensures exceptional chemical resistance, prevents contamination, and withstands permeation. |
|
Zero Leakage Shutoff |
Bidirectional bubble-tight shutoff with zero emissions under ANSI/API/ISO standards. |
|
Triple Stem Seal System |
Primary PFA seal + Secondary over-mold protection + PTFE safety seal - meets ISO 15848-1. |
|
Vacuum-Compatible Design |
PFA disc over-molded onto metal core ensures structural integrity in deep vacuum conditions. |
|
360° Seat Energizer |
Uniform sealing pressure across the entire disc circumference for long-term reliability. |
|
High-Cycle Durability |
Flex-resistant liner with superior creep resistance and low particle shedding for clean services. |
|
Live-Loaded Sealing |
Automatic adjustment for thermal expansion and wear - extends maintenance intervals. |
|
Streamlined Disc Profile |
Optimized for high flow capacity with low pressure drop. |
|
Replaceable Seat Design |
Easy to service at the end of the line without removing the valve from pipeline. |
|
Corrosion-Proof Shaft Protection |
Extended PFA shaft encapsulation eliminates media contact with metal components. |
Why choose us?
Used at the project site
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FAQ
|
Question |
Answer |
|
What is a PFA lined butterfly valve used for? |
For aggressive chemicals, ultra-pure water, acids, solvents, and applications needing zero leakage. |
|
What makes PFA better than PTFE? |
PFA has higher purity, better resistance to flex fatigue, and superior performance in dynamic flow. |
|
Can this valve handle vacuum service? |
Yes, it is vacuum-rated up to 0.0002 psia and fully compatible with vacuum systems. |
|
Does the valve meet emission standards? |
Yes, it complies with ISO 15848-1 low fugitive emission standards. |
|
What sizes are available? |
NPS 2"–24" / DN 50–600. |
|
Is it safe for semiconductor or cleanroom environments? |
Absolutely. Low particle shedding and microbial resistance make it ideal for ultrapure systems. |
|
Can the seat be serviced or replaced in-line? |
Yes. The seat energizer is mechanically retained and allows full serviceability at pressure. |
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