PTFE Fully Lined Lugged Butterfly Valve

Description

Technical Data Sheet

Fully Lined PTFE Lugged Butterfly Valve
(One-Piece Body Design)

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1. General Description

• Product Type: Lugged Butterfly Valve, One-Piece Body Design

• Lining Material: Fluoropolymer (PTFE / FEP / PFA), Fully Lined (Body flow passage and flange faces completely encapsulated)

• Body Construction: One-Piece Body – No split-body bolting, reducing potential leak paths

• Connection Type: Lugged Type, with threaded inserts (conforming to ISO or ASME standards)

• Design Standard: GB/T 12238 / API 609 / EN 593 / ISO 10631

• Face-to-Face: EN 558 Series 20 / ISO 5752 Series 20 / API 609 Table 1

• Flange Drilling: EN 1092-2 PN10/16, ASME B16.5 Class 150, GB/T 17241.6

• Test Standard: EN 12266-1 / API 598 / GB/T 13927 (Leakage Rate A – Zero Leakage)

• Temperature Range: -40°C to +200°C (depending on lining material and operating pressure)

• Pressure Rating: PN10 / PN16 / Class 150LB

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2. Application

• Suitable Media: Strong acids, alkalis, organic solvents, aqua regia, halogens, corrosive gases/liquids – virtually all corrosive media (except molten alkali metals and elemental fluorine)

• Typical Industries: Chemical, pharmaceutical, food processing, chlor-alkali, wastewater treatment, semiconductor, hazardous fluid handling

• Dead-End Service: Lugged design allows the valve to be used at line ends (e.g., connecting to a blind flange or equipment inlet) without support from the opposite flange

• Single-Side Dismantling: Allows maintenance on one side of the valve without disturbing the opposite piping

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3. Technical Parameters

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4. Materials of Construction

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5. Key Features & Benefits

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6. Dimensions & Weights (Lugged Type, One-Piece Body, PN10/PN16 – Reference Values)

*Note: Based on EN 558 Series 20. Lugged bodies are slightly longer (lug thickness) and heavier than wafer types. Request certified drawing from manufacturer for exact dimensions. *

(Note: Lug thread sizes are reference only; confirm with manufacturer. Weight includes body and lining, excludes operator.)

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7. Testing & Inspection

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8. Operation Options

• Lever Operation: Standard for DN50-DN150, with infinite positioning and locking device

• Gearbox Operation: Standard for DN200 and above, self-locking, handwheel for easy operation

• Pneumatic Actuator: Double-acting or spring-return; can be fitted with solenoid valves, limit switches, positioners

• Electric Actuator: On-off or modulating type with position feedback

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9. Selection Notes

1. Lining Material Selection:

   • PTFE (F4): -40°C to +180°C, suitable for most strong corrosive media

   • FEP (F46): -40°C to +150°C, good processability, smooth surface

   • PFA: -40°C to +200°C, best temperature resistance, suitable for high-purity applications

2. Lugged Installation:

   • Suitable for dead-end service, but confirm bolt length and strength

   • Valve can hold pressure on one side without the opposite flange (verify pressure rating)

   • For optimal sealing, it is recommended to tighten both flanges simultaneously during installation

3. One-Piece Body Advantage:

   • Eliminates split-body flange bolts – avoids risk of bolt corrosion and leakage in high-temperature or corrosive environments

   • Better body rigidity – suitable for higher pressures and more demanding applications

4. Flange Gaskets: Use PTFE or other corrosion-resistant gaskets. Ensure disc is in closed position during installation.

5. Do Not Over-Torque: Do not continue forcing the operator after the valve is fully closed, as this may damage the PTFE seat.

6. Static Electricity: For flammable media, select a valve with an anti-static device (stem-disc-body conductive path per ISO 5211).

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10. Ordering Information

To ensure correct selection, please specify:

• Valve Type: Fully Lined PTFE Lugged Butterfly Valve

• Body Construction: One-Piece Body

• Nominal Diameter (DN):

• Pressure Rating (PN/Class):

• Lining Material (PTFE/FEP/PFA):

• Body Material:

• Disc Material:

• Operation (Lever/Gearbox/Pneumatic/Electric):

• Flange Standard (EN 1092-2 / ASME B16.5):

• Media / Temperature Requirements:

• Special Requirements (Anti-static / Fire-safe / Extension Stem / Dead-End Service, etc.):

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This data sheet is a guideline based on standard industry practice for Fully Lined PTFE Lugged Butterfly Valves with One-Piece Body. Always refer to the manufacturer’s certified drawings for exact dimensions and ratings.