Flowserve Durco Plug Valve G4E DN 15 PN16/40 Stainless Steel PFA TA-Air Hand Lever
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120-1100-04
Flowserve Durco sleeveline G4E DN 15, flange connection acc. to DIN EN 1092-1-PN16/40, face to face EN 558-1, series 1 (ISO 5752), plug & body made of stainless steel (1.4408), diaphragm made of PFA, approval TA-Luft with hand lever
Plug:
Stainless steel (1.4408)
Membrane :
PFA
Bushing/Seats :
PTFE
Cover :
Stainless steel (1.4408)
Nominal width :
DN15 - 1/2'' inch
Categories :
G4E - Plug Valve
Price
€267.75
€318.62 incl. VAT
Delivery Time:
in stock
Available:
In Stock
Flowserve DURCO G4Z Plug Valve 1 1/2'' inch Class150 Steel PFA TA-Air Fire Safe Hand Lever
Product number
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120-1141-08
Flowserve DURCO Sleeveline G4Z Plug valve 1 1/2'' inch, Flange connection acc. to ANSI B16.5. Class150, RF, Face to face acc. to ANSI B16.10, Reduced passage, Plug made of stainless steel 1.4408, Body made of steel 1.4408, Diaphragm PFA, Approval TA Luft, Fire safe with hand lever
Membrane :
PFA
Bushing/Seats :
PTFE
Plug:
316 SS / 1.4408 / ASTM A351 GR. CF8M
Cover :
Duplex / 1.4517 / ASTM A995 Gr. 1B CD4MCuN - Stainless steel
Nominal width :
DN40 - 1 1/2'' inch
Categories :
G4Z - Plug Valve
Price
€732.38
€871.53 incl. VAT
Delivery Time:
in stock
Available:
In Stock
Flowserve Durco T4E1 PFA Kükenhahn 1 1/2 Zoll Class150
Product number
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120-1210-08
Flowserve Durco Kükenhahn 1 1/2 ZollFlansch Anschluss
nach ASME B16.5-150lbs, Baulänge nach ASME B16.10-short pattern, Küken
Sphäroguss GGG40.3-PFA ummantelt, Gehäuse aus Sphäroguss GGG40.3-PFA
ausgekleidet, mit Handhebel
Membrane :
PFA
Plug:
Ductile iron EN-JS1049 / A395 Gr. 60-40-18
Nominal width :
DN40 - 1 1/2'' inch
Categories :
T4E1 - Plug Valve
Design :
2 ways
Face to Face length :
ANSI B16.10-Short
Price
€519.75
€618.50 incl. VAT
Delivery Time:
in stock
Available:
In Stock
Flowserve DURCO G4Z Plug Valve 4 Inch Class150 stainless steel PFA TA-Air Fire Safe Gear box
Product number
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120-1141-12
Flowserve DURCO Sleeveline G4Z Plug valve 4 inches, Flange connection acc. to ANSI B16.5. Class150, RF, Face-to-face length acc. to ANSI B16.10, Reduced passage, Plug made of stainless steel 1.4408, Body made of stainless steel 1.4408, Diaphragm PFA, Approval TA Luft, Fire safe with gear box
Membrane :
PFA
Bushing/Seats :
PTFE
Plug:
316 SS / 1.4408 / ASTM A351 GR. CF8M
Cover :
Duplex / 1.4517 / ASTM A995 Gr. 1B CD4MCuN - Stainless steel
Categories :
G4Z - Plug Valve
Nominal width :
DN100 - 4'' inch
Price
€2,409.75
€2,867.60 incl. VAT
Delivery Time:
in stock
Available:
In Stock
Flowserve DURCO G4Z plug valve 2'' Inch Class150 Stainless Steel PFA TA-Air Fire Safe Hand Lever
Product number
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120-1140-09
Flowserve DURCO Sleeveline G4Z plug valve 2 inch, Flange connection acc. to ANSI B16.5. Class150, RF, Face to face acc. to ANSI B16.10, Reduced passage, Plug stainless steel 1.4408, Body stainless steel 1.4408, Diaphragm PFA, Approval TA Luft, Fire safe with hand lever
Membrane :
PFA
Bushing/Seats :
PTFE
Plug:
316 SS / 1.4408 / ASTM A351 GR. CF8M
Cover :
Duplex / 1.4517 / ASTM A995 Gr. 1B CD4MCuN - Stainless steel
Categories :
G4Z - Plug Valve
Nominal width :
DN50 - 2'' inch
Price
€1,008.00
€1,199.52 incl. VAT
Delivery Time:
in stock
Available:
In Stock
Flowserve Durco Plug Valve G4E DN 80 PN16/40 Steel PFA TA-Air Hand Lever
Product number
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120-1101-11
Flowserve Durco sleeveline G4E DN 80 plug valve, flange connection acc. to DIN EN 1092-1-PN40, face to face EN 558-1, series 1 (ISO 5752), plug made of stainless steel (1.4408), body made of steel (1.0619), diaphragm made of PFA, approval TA-Luft with hand lever
Membrane :
PFA
Bushing/Seats :
PTFE
Plug:
316 SS / 1.4408 / ASTM A351 GR. CF8M
Cover :
316 SS / 1.4408 / ASTM A351 GR. CF8M - Stainless steel
Categories :
G4E - Plug Valve
Nominal width :
DN80 3'' inch
Price
€1,138.73
€1,355.09 incl. VAT
Delivery Time:
in stock
Available:
In Stock
Flowserve DURCO G411 Plug valve 1/2'' inch Class150 Stainless steel PFA TA-Air Hand lever
Product number
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120-1120-04
Flowserve DURCO G411 Plug valve 1/2'' inch, flange connection acc. to ANSI B16.5. Class150, RF, face-to-face length acc. to ANSI B16.10, plug stainless steel 1.4408, body stainless steel 1.4408, diaphragm PFA, approval TA Luft with hand lever
Membrane :
PFA
Bushing/Seats :
PTFE
Plug:
316 SS / 1.4408 / ASTM A351 GR. CF8M
Cover :
Duplex / 1.4517 / ASTM A995 Gr. 1B CD4MCuN - Stainless steel
Nominal width :
DN15 - 1/2'' inch
Categories :
G411 - Plug Valve
Price
€308.70
€367.35 incl. VAT
Delivery Time:
in stock
Available:
In Stock
Flowserve DURCO G4Z Plug Valve 1'' inch Class150 Stainless Steel PFA TA-Air Fire Safe Handle
Product number
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120-1141-06
Flowserve DURCO Sleeveline G4Z Plug valve 1'' inch, Flange connection acc. to ANSI B16.5. Class150, RF, Face to face acc. to ANSI B16.10, Reduced passage, Plug made of stainless steel 1.4408, Body made of steel 1.4408, Diaphragm PFA, Approval TA Luft, Fire safe with hand lever
Membrane :
PFA
Bushing/Seats :
PTFE
Plug:
316 SS / 1.4408 / ASTM A351 GR. CF8M
Cover :
Duplex / 1.4517 / ASTM A995 Gr. 1B CD4MCuN - Stainless steel
Categories :
G4Z - Plug Valve
Nominal width :
DN25 - 1'' inch
Price
€521.33
€620.38 incl. VAT
Delivery Time:
10-12 Woche
Available:
In Stock
Flowserve DURCO G4Z Plug Valve 4'' Inch Class150 Stainless Steel PFA TA-Air Fire Safe Transmission
Product number
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120-1140-12
Flowserve DURCO Sleeveline G4Z Plug valve 3'' inch, Flange connection acc. to ANSI B16.5. Class150, RF, Face to face acc. to ANSI B16.10, Reduced passage, Plug stainless steel 1.4408, Body stainless steel 1.4408, Diaphragm PFA, Approval TA Luft, Fire safe with gearbox
Membrane :
PFA
Bushing/Seats :
PTFE
Plug:
316 SS / 1.4408 / ASTM A351 GR. CF8M
Cover :
Duplex / 1.4517 / ASTM A995 Gr. 1B CD4MCuN - Stainless steel
Categories :
G4Z - Plug Valve
Nominal width :
DN100 - 4'' inch
Price
€2,857.05
€3,399.89 incl. VAT
Delivery Time:
in stock
Available:
In Stock
Flowserve Durco T4E1 PFA Kükenhahn 3 Zoll Class150
Product number
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120-1210-11
Durco PFA Kükenhahn 3 ZollFlansch Anschluss
nach ASME B16.5-150lbs, Baulänge nach ASME B16.10-short pattern, Küken
Sphäroguss GGG40.3-PFA ummantelt, Gehäuse aus Sphäroguss GGG40.3-PFA
ausgekleidet, mit Handhebel
Membrane :
PFA
Plug:
Ductile iron EN-JS1049 / A395 Gr. 60-40-18
Categories :
T4E1 - Plug Valve
Nominal width :
DN80 3'' inch
Design :
2 ways
Face to Face length :
ANSI B16.10-Short
Price
€711.90
€847.16 incl. VAT
Delivery Time:
in stock
Available:
In Stock
Flowserve Durco T4E2 Kükenhahn DN 100 PN16 PFA ausgekleidet
Product number
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120-1200-12
Flowserve Durco Kükenhahn DN 100Flansch Anschluss nach DIN
EN 1092-2-PN10/16, Baulänge EN558, Reihe-1, Küken Sphäroguss GGG40.3-PFA
ummantelt, Gehäuse aus Sphäroguss GGG40.3-PFA ausgekleidet, mit Handhebel
Membrane :
PFA
Plug:
Ductile iron EN-JS1049 / A395 Gr. 60-40-18
Nominal width :
DN100 - 4'' inch
Categories :
T4E2 - Plug Valve
Design :
2 ways
Face to Face length :
EN 558-1 series 1
Price
€1,414.35
€1,683.08 incl. VAT
Delivery Time:
in stock
Available:
In Stock
Flowserve Durco T4E1 Kükenhahn 1" Zoll Class 150 PFA ausgekleidet
Product number
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120-1210-06
Flowserve Durco Kükenhahn 1" Zoll, Flansch Anschluss
nach ASME B16.5-150lbs, Baulänge nach ASME B16.10-short pattern, Küken
Sphäroguss GGG40.3-PFA ummantelt, Gehäuse aus Sphäroguss GGG40.3-PFA
ausgekleidet, mit Handhebel
Membrane :
PFA
Plug:
Ductile iron EN-JS1049 / A395 Gr. 60-40-18
Categories :
T4E1 - Plug Valve
Nominal width :
DN25 - 1'' inch
Design :
2 ways
Face to Face length :
ANSI B16.10-Short
Price
€422.10
€502.30 incl. VAT
Delivery Time:
in stock
Available:
In Stock
Flowserve DURCO G4Z Plug Valve 1'' inch Class150 Stainless Steel PFA TA-Air Fire Safe Handle
Product number
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120-1140-06
Flowserve DURCO Sleeveline G4Z Plug valve 1'' inch, Flange connection acc. to ANSI B16.5. Class150, RF, Face to face acc. to ANSI B16.10, Reduced passage, Plug stainless steel 1.4408, Body stainless steel 1.4408, Diaphragm PFA, Approval TA Luft, Fire safe with hand lever
Membrane :
PFA
Bushing/Seats :
PTFE
Plug:
316 SS / 1.4408 / ASTM A351 GR. CF8M
Cover :
Duplex / 1.4517 / ASTM A995 Gr. 1B CD4MCuN - Stainless steel
Categories :
G4Z - Plug Valve
Nominal width :
DN25 - 1'' inch
Price
€582.75
€693.47 incl. VAT
Delivery Time:
in stock
Available:
In Stock
Flowserve Durco Plug Tap G431 1 1/2'' inch Class300 Stainless Steel PFA TA-Air Hand Lever
Product number
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120-1130-08
Flowserve Durco sleeveline G431 1 1/2'' inch plug valve, flange connection acc. to ANSI B16.5. Class300-RF, face-to-face length acc. to ANSI B16.10, plug stainless steel 1.4408, body stainless steel 1.4408, diaphragm PFA, approval TA-air with hand lever
Membrane :
PFA
Bushing/Seats :
PTFE
Plug:
316 SS / 1.4408 / ASTM A351 GR. CF8M
Cover :
Duplex / 1.4517 / ASTM A995 Gr. 1B CD4MCuN - Stainless steel
Nominal width :
DN40 - 1 1/2'' inch
Categories :
G431 - Plug Valve
Price
€1,086.75
€1,293.23 incl. VAT
Delivery Time:
10-12 Woche
Available:
In Stock
Flowserve Durco Plug Tap G431 1/2'' inch Class300 Stainless Steel PFA TA-Air Hand Lever
Product number
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120-1130-04
Flowserve Durco sleeveline G431 1/2'' inch plug valve, flange connection acc. to ANSI B16.5. Class300-RF, face-to-face length acc. to ANSI B16.10, plug stainless steel 1.4408, body stainless steel 1.4408, diaphragm PFA, approval TA-air with hand lever
Membrane :
PFA
Bushing/Seats :
PTFE
Plug:
316 SS / 1.4408 / ASTM A351 GR. CF8M
Cover :
Duplex / 1.4517 / ASTM A995 Gr. 1B CD4MCuN - Stainless steel
Nominal width :
DN15 - 1/2'' inch
Categories :
G431 - Plug Valve
Price
€666.23
€792.81 incl. VAT
Delivery Time:
in stock
Available:
In Stock
Flowserve DURCO G4Z Plug Valve 3/4'' inch Class150 Stainless Steel PFA TA-Air Fire Safe Hand Lever
Product number
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120-1140-05
Flowserve DURCO Sleeveline G4Z Plug valve 3/4'' inch, Flange connection acc. to ANSI B16.5. Class150, RF, Face-to-face acc. to ANSI B16.10, Reduced passage, Plug stainless steel 1.4408, Body stainless steel 1.4408, Diaphragm PFA, Approval TA Luft, Fire safe with hand lever
Membrane :
PFA
Bushing/Seats :
PTFE
Plug:
316 SS / 1.4408 / ASTM A351 GR. CF8M
Cover :
Duplex / 1.4517 / ASTM A995 Gr. 1B CD4MCuN - Stainless steel
Categories :
G4Z - Plug Valve
Nominal width :
DN20 - 3/4'' inch
Price
€475.65
€566.02 incl. VAT
Delivery Time:
in stock
Available:
In Stock
Flowserve Durco Plug Valve G4E DN 40 PN16/40 Stainless Steel PFA TA-Air Hand Lever
Product number
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120-1100-08
Flowserve Durco sleeveline G4E DN 40, flange connection acc. to DIN EN 1092-1-PN16/40, face to face EN 558-1, series 1 (ISO 5752), plug & body made of stainless steel (1.4408), diaphragm made of PFA, approval TA-Luft with hand lever
Plug:
Stainless steel (1.4408)
Membrane :
PFA
Bushing/Seats :
PTFE
Cover :
Stainless steel (1.4408)
Categories :
G4E - Plug Valve
Nominal width :
DN40 - 1 1/2'' inch
Price
€562.28
€669.11 incl. VAT
Delivery Time:
in stock
Available:
In Stock
Flowserve Durco T4E2 Kükenhahn DN 80 PN16 PFA ausgekleidet
Product number
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120-1200-11
Flowserve Durco Kükenhahn DN 80Flansch Anschluss nach DIN
EN 1092-2-PN10/16, Baulänge EN558, Reihe-1, Küken Sphäroguss GGG40.3-PFA
ummantelt, Gehäuse aus Sphäroguss GGG40.3-PFA ausgekleidet, mit Handhebel
Membrane :
PFA
Plug:
Ductile iron EN-JS1049 / A395 Gr. 60-40-18
Nominal width :
DN80 3'' inch
Categories :
T4E2 - Plug Valve
Design :
2 ways
Face to Face length :
EN 558-1 series 1
Price
€943.43
€1,122.68 incl. VAT
Delivery Time:
10-12 Woche
Available:
In Stock
Flowserve DURCO G4Z plug valve 2 inch Class150 steel PFA TA-air fire safe
Product number
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120-1141-09
Flowserve DURCO Sleeveline G4Z plug valve 2 Zoll inch, Flange connection acc. to ANSI B16.5. Class150, RF, Face-to-face length acc. to ANSI B16.10, Reduced passage, Plug made of stainless steel 1.4408, Body made of steel 1.4408, Diaphragm PFA, Approval TA Luft, Fire safe with hand lever
Membrane :
PFA
Bushing/Seats :
PTFE
Plug:
316 SS / 1.4408 / ASTM A351 GR. CF8M
Cover :
Duplex / 1.4517 / ASTM A995 Gr. 1B CD4MCuN - Stainless steel
Categories :
G4Z - Plug Valve
Nominal width :
DN50 - 2'' inch
Price
€787.50
€937.12 incl. VAT
Delivery Time:
in stock
Available:
In Stock
Flowserve Durco T4E2 Kükenhahn DN 25 PN16 PFA ausgekleidet
Product number
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120-1200-06
Flowserve Durco Kükenhahn DN 25Flansch Anschluss nach DIN
EN 1092-2-PN10/16, Baulänge EN558, Reihe-1, Küken Sphäroguss GGG40.3-PFA
ummantelt, Gehäuse aus Sphäroguss GGG40.3-PFA ausgekleidet, mit Handhebel
Membrane :
PFA
Plug:
Ductile iron EN-JS1049 / A395 Gr. 60-40-18
Nominal width :
DN25 - 1'' inch
Categories :
T4E2 - Plug Valve
Design :
2 ways
Face to Face length :
EN 558-1 series 1
Price
€384.30
€457.32 incl. VAT
Delivery Time:
in stock
Available:
In Stock
Plug Valve vs. Ball Valve: Technical Differences and Correct Selection
Both ball valves and plug valves serve for reliable shut-off of gases, vapors and liquids. The crucial difference lies in the closing principle and the resulting suitability for application. The ball valve uses a rotatable ball with a bore and enables quick, tight shut-off with a quarter turn. It is often the first choice for clean gases or liquids.
The plug valve, on the other hand, convinces where the ball valve reaches its limits: With abrasive or highly viscous media, the metallic or with high-quality plastics such as PFA lined cone seat of the plug offers significantly higher resistance to wear. Due to the conical or cylindrical shape, the flow can not only be opened or closed, but also continuously regulated, which enables more precise control. In short: Where fast switching and tightness are required, the ball valve is suitable. For difficult media, precise regulation and absolute residue-free operation, the plug valve is the superior technology.
FERGO's Portfolio: High-quality Flowserve DURCO plug valves for every standard. As a partner, FERGO offers a comprehensive program of high-quality plug valves of the Flowserve DURCO brand. This range covers common international standards and is available in various material combinations.
Product Series & Type |
Technical Specifications & Materials |
Ideal for & Application |
Special Advantages & FERGO Expertise |
|---|---|---|---|
|
G4E / G4Z Series Sleeveline design • PFA membrane |
Nominal diameters: DN15 to DN150 (e.g., DN25, DN40, DN80) |
Aggressive chemicals, corrosive media, processes with high purity requirements. |
|
|
T4E2 / T4E1 Series Fully PFA-lined • Premium |
Nominal diameters: DN15 to DN150 / 1/2″ to 6″ |
Highest requirements for media purity, highly aggressive chemicals, pharmaceutical and food industry. |
|
|
G411 Series Compact • ANSI |
Nominal diameters: 1/2″ to 8″ (e.g., 1/2″, 2″) |
American market, ANSI plants, processes with compact designs. |
|
The valves are available in various nominal diameters: For DIN systems from DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125 to DN150. For ASME/ANSI systems accordingly in inches, such as 1/2″, 1″, 1 1/2″, 2″, 3″, 4″, 6″, 8″. The connection is optionally according to DIN EN 1092-1 (e.g. PN16/40) or ANSI/ASME B16.5 (e.g. Class150). Further advantages of the DURCO plug valves include approvals such as TA-Luft and fire-safe versions for use in demanding safety areas.
Conclusion: Plug Valves for Maximum Process Reliability
In summary, FERGO plug valves, particularly the Flowserve DURCO series, represent a highly specialized solution for industrial applications that exceed the capabilities of standard ball valves. Their key advantages include reliable handling of abrasive, viscous, or highly aggressive media, a completely residue-free flow path, and the option for precise flow regulation.
Thanks to a wide range of material options—such as stainless steel plug valves and PFA-lined versions—as well as various pressure ratings and international connection standards, an optimal valve solution is available for almost every requirement in the chemical, pharmaceutical, and petrochemical industries.
As an experienced specialist in industrial valve technology, FERGO is pleased to support you with expert consultation to help select the most suitable plug valve for your specific process and application.
Frequently Asked Questions – PFA Valves
A PFA-lined valve combines the mechanical strength of a ductile iron (GGG40.3) outer body with a seamless inner lining of PFA (Perfluoroalkoxy) – a fully fluorinated thermoplastic from the PTFE family with near-universal chemical resistance. The construction principle:
- Outer body: Ductile cast iron EN-GJS-400-15 (GGG40.3) provides the pressure-bearing shell, flange geometry, and mechanical robustness. The iron never contacts the process medium.
- PFA lining: All wetted surfaces – body bore, flanges, closure element (ball, disc, plug), stem seal area, and internals – are completely encapsulated in a thick, monolithic PFA liner. The liner is bonded or compression-fitted to the iron body to form a single leak-free unit.
- No metallic contact with medium: Because the PFA liner fully isolates all iron and steel components from the process fluid, PFA valves can handle virtually any chemical that would corrode or contaminate stainless steel – including concentrated acids, halogens, and ultra-pure fluids where even trace metal ion contamination is unacceptable.
- Closure elements: The ball (in ball valves), disc (in check valves), plug (in plug valves), and strainer basket are also fully PFA-encapsulated or PFA-moulded, ensuring zero metal exposure at any flow-wetted surface.
- Near-universal chemical resistance – resistant to almost all acids, alkalis, solvents, and oxidising agents at concentrations from dilute to concentrated
- Operating temperature: −60°C to +180°C (liner); most Flowserve models rated to +150°C continuous process service
- Extremely low surface energy (non-stick, anti-fouling) – media does not adhere to or contaminate the PFA surface
- Electrically insulating – prevents galvanic corrosion and electrostatic product contamination
- FDA-compliant grades available for pharmaceutical and food-contact applications
FERGO is an authorised Flowserve partner and stocks the complete Flowserve PFA valve programme under the renowned Atomac and Durco brand names. The range covers 5 valve types for a complete PFA pipeline system:
- PFA Ball Valves – Quarter-turn shut-off; full-bore PFA-lined ball and body; ISO 5211 actuator interface for pneumatic or electric automation; flanged PN10/16 and ANSI Class 150; DN15–DN150. The most commonly specified PFA valve type for on/off isolation in aggressive chemical service.
- PFA Check Valves – Wafer and flanged non-return valves with PFA-lined body and PFA disc; prevent backflow of aggressive or ultra-pure media without any metal contact; PN10/16, ANSI Class 150; DN15–DN300.
- PFA Sight Glass – Flow observation windows with PFA-lined body and borosilicate glass sight window; visual process monitoring in aggressive chemical pipelines; flanged PN10/16; DN15–DN200.
- PFA Plug Valves – Quarter-turn plug (cock) valves with PFA-lined conical plug and body; reliable shut-off with minimal dead volume; suitable for slurries, viscous fluids, and media where a full-bore straight passage is critical; flanged PN10/16; DN15–DN200.
- PFA Strainers – Y-type and basket strainers with PFA-lined body and PFA-coated strainer basket; protect downstream equipment from particulates in aggressive media pipelines; flanged PN10/16; DN15–DN400.
PFA offers near-universal chemical resistance – one of the broadest of any engineering material. This is the defining reason to specify PFA-lined valves over stainless steel or other alloys. Key media that PFA handles where stainless steel fails or is unsuitable:
Mineral acids (all concentrations):
Mineral acids (all concentrations):
- Hydrochloric acid (HCl) – all concentrations; stainless steel corrodes severely above ~2% HCl; PFA is fully resistant
- Sulphuric acid (H₂SO₄) – dilute to concentrated (including fuming); highly corrosive to SS at intermediate concentrations
- Hydrofluoric acid (HF) – highly aggressive to glass, SS, and most metals; PFA is resistant at concentrations up to ~60% at moderate temperatures
- Nitric acid (HNO₃) – dilute and concentrated; PFA resists even fuming nitric acid
- Phosphoric acid (H₃PO₄) – all concentrations; routine PFA service
- Sodium hydroxide / potassium hydroxide (NaOH / KOH) – concentrated caustic lyes; PFA is fully resistant
- Chlorine (Cl₂), bromine (Br₂), fluorine (F₂) – gaseous and liquid halogens; among the most aggressive oxidising agents; PFA resists all three
- Hydrogen peroxide (H₂O₂) – dilute to concentrated; PFA resistant; SS may be used at low concentrations but PFA is preferred for high-purity applications
- Sodium hypochlorite (NaOCl) – bleach and chlorination chemicals; PFA fully resistant
- Aromatic solvents (toluene, xylene), ketones, esters, chlorinated solvents (DCM, TCE) – PFA resistant across the range
- Dimethyl sulfoxide (DMSO), dimethylformamide (DMF) – aggressive solvents used in pharma/chemical synthesis; PFA resistant
- PFA is the liner material of choice for ultra-high-purity (UHP) water, piranha solution (H₂SO₄/H₂O₂), SC1/SC2 cleaning chemicals, and HF/HNO₃ etch solutions in semiconductor fabs – where even sub-ppb metal ion contamination from stainless steel is unacceptable
The choice between PFA-lined and stainless steel (or exotic alloy) valves depends on the medium, concentration, temperature, and purity requirements:
Choose a PFA-lined valve when:
Choose a PFA-lined valve when:
- The medium corrodes stainless steel: HCl above ~2%, concentrated H₂SO₄ at intermediate concentrations, HF at any concentration, Cl₂/Br₂ wet gas, or any medium shown as incompatible with SS 316 in chemical resistance tables
- Metal contamination is unacceptable: Pharmaceutical APIs, UHP semiconductor chemicals, food-grade acids, and high-purity process streams where even ppb-level iron, chromium, or nickel contamination causes product failure or process excursions
- Cost vs exotic alloys: Hastelloy C-276, titanium, or tantalum valves offer corrosion resistance comparable to PFA for some media, but at 5–15× the cost per valve. A GGG40 + PFA-lined valve covers the same chemical service at a fraction of the price.
- Complete system consistency: When the pipeline is already PFA-lined, using PFA valves avoids introducing dissimilar materials at valve connections – maintaining lining continuity throughout the system
- Operating temperature ≤ +180°C: Within the PFA liner's service range; for temperatures above +180°C, alternative materials must be evaluated
- The medium is compatible with SS 316 (1.4408) – water, steam, neutral process fluids, mild acids/alkalis at low concentration
- Operating temperature exceeds +180°C – PFA liner is outside its service range; SS or carbon steel is required
- High pressure rating (PN40 or above) is required – PFA-lined valves are rated to PN10/16 / ANSI Class 150; SS valves can reach PN40 and higher
- Mechanically demanding service (abrasive slurries, high flow velocity causing liner erosion risk, or frequent actuation with high differential pressure) where liner integrity could be compromised over time
The Flowserve PFA valve range available from FERGO covers the following technical parameters:
Nominal sizes by valve type:
Connection standard: Flanged face-to-face per EN 558 / ASME B16.10 as applicable. Wafer (face-to-face) construction available for check valves and some sight glass models for compact installation between standard PN10/16 or ANSI 150 flanges.
Actuation (ball valves and plug valves): ISO 5211 actuator mounting pad integral to the valve body allows direct mounting of pneumatic or electric part-turn actuators – same interface as standard stainless steel ball valves. FERGO can supply complete actuated PFA valve assemblies with pneumatic actuator, NAMUR solenoid valve, and limit switch box.
Nominal sizes by valve type:
- PFA Ball Valves: DN15 – DN150
- PFA Check Valves: DN15 – DN300
- PFA Sight Glass: DN15 – DN200
- PFA Plug Valves: DN15 – DN200
- PFA Strainers: DN15 – DN400
- PN10 / PN16 – flanged per EN 1092-1, compatible with DIN PN10/16 pipeline flanges throughout
- ANSI Class 150 – flanged per ASME B16.5, for projects with American pipe specifications or export installations requiring ANSI flanging
Connection standard: Flanged face-to-face per EN 558 / ASME B16.10 as applicable. Wafer (face-to-face) construction available for check valves and some sight glass models for compact installation between standard PN10/16 or ANSI 150 flanges.
Actuation (ball valves and plug valves): ISO 5211 actuator mounting pad integral to the valve body allows direct mounting of pneumatic or electric part-turn actuators – same interface as standard stainless steel ball valves. FERGO can supply complete actuated PFA valve assemblies with pneumatic actuator, NAMUR solenoid valve, and limit switch box.
PFA valves are the standard valve solution in any process where the medium is incompatible with metallic wetted surfaces. Key industries:
- Chemical manufacturing: Chlor-alkali plants (Cl₂, NaOH, HCl); sulphuric acid production and handling; hydrofluoric acid (HF) processes; nitric acid, phosphoric acid, and mixed acid systems; bleaching agents (NaOCl, H₂O₂); aggressive organic synthesis solvents. PFA valves replace Hastelloy, tantalum, or rubber-lined valves in these services at significantly lower cost.
- Semiconductor and electronics manufacturing: UHP (ultra-high purity) chemical distribution systems; wet bench etch processes (HF/HNO₃, buffered oxide etch, piranha solution); SC1/SC2 wafer cleaning chemicals; photolithography chemical supply. PFA is the dominant lining material in semiconductor fabs because it introduces zero metal ion contamination into process chemicals.
- Pharmaceutical and fine chemicals: API synthesis and handling involving aggressive solvents or acids; highly corrosive intermediate streams; sterile process lines where FDA-compliant PFA grades eliminate metallic contamination risk. PFA sight glasses provide visual monitoring without stainless steel contact.
- Water treatment and environmental: Chlorination and fluoridation chemical dosing (Cl₂, NaOCl, HF); acid/alkali pH correction dosing (H₂SO₄, HCl, NaOH); reverse osmosis chemical cleaning systems; industrial effluent neutralisation.
- Food and beverage: Acid cleaning-in-place (CIP) circuits; citric acid, phosphoric acid, and caustic soda (NaOH) handling; FDA-compliant PFA grades for direct food-contact applications where SS passivation is insufficient.
- Pulp and paper: Bleaching chemical circuits (ClO₂, H₂O₂, NaOCl); acid washing; aggressive bleach plant chemical handling where PFA replaces titanium or rubber-lined equipment.
Yes – PFA ball valves and PFA plug valves from the Flowserve Atomac/Durco range are designed with an ISO 5211 actuator mounting pad integrated directly into the valve body (or top flange). This is the same standardised interface used on conventional stainless steel ball valves, which means:
FERGO supplies complete actuated PFA valve assemblies – valve + actuator + solenoid + limit switch – factory-assembled, tested, and ready to install. Contact shop@fergo-valve.com for project configurations.
- Direct mounting of standard pneumatic or electric part-turn actuators without brackets or adapters
- Full compatibility with FERGO's pneumatic actuators (double-acting and spring-return / fail-safe) and J4C electric part-turn actuators
- NAMUR solenoid valve interface for pneumatic control from a DCS or PLC via NAMUR solenoid valves
- Position feedback via limit switch box or inductive sensors
- ATEX-certified actuator options for installation in explosive atmosphere zones (Zone 1 / Zone 2) – relevant for chemical plants handling flammable solvents alongside corrosive media
FERGO supplies complete actuated PFA valve assemblies – valve + actuator + solenoid + limit switch – factory-assembled, tested, and ready to install. Contact shop@fergo-valve.com for project configurations.
Flowserve is one of the world's largest and most established industrial valve manufacturers, with a dedicated PFA-lined valve programme under two specialist brands:
Why source PFA valves from FERGO?
- Atomac – Flowserve's European PFA valve brand, engineered and manufactured for demanding chemical process applications. The Atomac range covers PFA ball valves, check valves, sight glasses, plug valves, and strainers to EN / DIN standards (PN10/16, EN 1092-1 flanges).
- Durco – Flowserve's internationally recognised PFA and lined valve brand with ANSI/ASME-standard products (Class 150, ASME B16.5 flanges) for global export projects and US-specification installations.
Why source PFA valves from FERGO?
- Authorised Flowserve partner: FERGO is an authorised distributor of Flowserve PFA valves – all products are genuine Atomac/Durco with full manufacturer documentation and traceability
- Stock availability: Most standard PFA valve models and sizes are held in FERGO stock for immediate or next-day delivery – critical for unplanned maintenance and production shutdowns
- Complete system supply: FERGO supplies PFA valves alongside actuators, PTFE flange gaskets, solenoid valves, and all ancillary equipment needed for a complete PFA pipeline installation
- Technical application support: 20+ years of industrial valve experience; expert guidance on media compatibility, size selection, and actuator specification for aggressive chemical service