Description

4″-150LB-Lugged PFA Lined Butterfly Valve – Technical Data Sheet (Corrected – Category A)

1. Product Overview

The 4″-150LB-Lugged PFA Lined Butterfly Valve is a lug‑style butterfly valve with a full PFA (perfluoroalkoxy) lining. It is designed for severe corrosive chemical services, semiconductor ultrapure water systems, and pharmaceutical applications. The lugged body allows independent bolting to each pipeline flange, enabling dead‑end service and easy downstream line removal for maintenance. All wetted surfaces are completely encapsulated by precision‑molded PFA lining, ensuring no contact between the process media and metal parts, and providing bidirectional bubble‑tight shut‑off.

Key Features:

• Full PFA lining – Valve body cavity, disc, and stem contact surfaces are completely encapsulated with PFA; excellent corrosion resistance, no permeation risk.

• Bidirectional zero leakage – Spherically molded PFA lining mates with disc for ISO 5208 Rate A / ANSI Class VI shut‑off.

• Blow‑out proof one‑piece disc/stem – Integral disc and stem eliminates mechanical connections, avoiding lining damage.

• ISO 5211 mounting pad – Top flange conforms to ISO 5211 for direct mounting of manual, electric, or pneumatic actuators.

• 15 kV high‑voltage spark test – All lined components are 100% spark tested at 15 kV to ensure pinhole‑free lining.

• Lugged body advantage – Supports dead‑end service; downstream piping can be removed without draining the upstream line.

2. Technical Specifications

3. Design & Manufacturing Standards

4. Valve Dimensions (4″ / DN100, Class 150LB, Category A)

5. Main Component Materials

6. PFA Lining Material Properties

Chemical resistance: PFA offers outstanding chemical resistance at high temperatures. It withstands strong mineral acids, strong alkalis, inorganic oxidizers, and most organic compounds. Only molten alkali metals, gaseous fluorine, and some complex halides (e.g., chlorine trifluoride) will attack PFA.

Thermal aging & creep resistance: PFA exhibits excellent creep resistance and thermal aging stability, ensuring long‑term sealing reliability under high‑temperature service.

7. Pressure‑Temperature Rating

Note: Ratings are based on ASME B16.34 pressure‑temperature tables and limited by the PFA lining material. Always verify suitability with actual service conditions.

8. Performance Parameters

9. Actuator Interface & Operation

10. Inspection & Testing

11. Typical Applications & Industries

• Chemical & petrochemical – Strong acids, strong alkalis, chlor‑alkali solutions, organic solvents

• Semiconductor manufacturing – Ultrapure water, high‑purity chemical delivery

• Pharmaceutical industry – Active pharmaceutical ingredient (API) synthesis, high‑purity process media

• Food & beverage – FDA‑compliant sanitary applications

• Water treatment – Reverse osmosis (RO), ultrafiltration, UV disinfection systems

• Vacuum service – Chemical vacuum lines

• Electroplating & surface finishing – Pickling tanks, galvanizing lines

• Hydrometallurgy & mining – Corrosive slurry lines

12. Important Notes

1. Media cleanliness – Avoid fluids containing hard solid particles (crystals, weld spatter, sand, etc.) which may scratch the PFA lining.

2. Installation – Ensure proper alignment. Tighten flange bolts evenly and in a cross pattern. Lugged valves can be installed independently on either flange; downstream piping can be removed without draining the upstream system.

3. Temperature limits – Standard PFA: 160°C max; high‑performance PFA/TFM: up to 200°C max. Do not exceed the rated temperature.

4. Pressure limits – Due to PFA mechanical strength, a Class 150LB valve should be used within PN16 (approx. 232 psi) maximum.

5. Vacuum service – Suitable within -10°C ~ +160°C (limited by lining elastic recovery).

6. Spark testing – All lined components are 100% high‑voltage spark tested at 15 kV before shipment.

7. Actuator sizing – Select actuator based on actual operating frequency, temperature, differential pressure, and break‑away torque.

8. Storage & transport – Store in dry, ventilated area away from direct UV exposure. Protect from impacts that could damage the PFA lining.

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This technical data sheet is prepared in accordance with API 609 Category A, MSS SP‑67, ASME B16.10, ISO 5208, ISO 15848, and related standards. Actual specifications may vary slightly between manufacturers. Always verify final details with the supplier before selection.