Butterfly Valve

Lined Butterfly Valves

A lined butterfly valve features a durable lining, such as PTFE, to protect against corrosive and abrasive fluids. This design ensures reliable sealing, reduces maintenance, and provides excellent chemical resistance, making it ideal for harsh industrial environments.


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Specifications

Butterfly Valve – Lined Size Range

NPS 2 to 24 / DN 50 to 600

Body Materials

Cast Iron,
Ductile Iron,
Stainless Steel,
Carbon Steel

Temperature Range

0°F to 392°F (-18°C to 200°C)

Stem Materials

17-4 PH Stainless Steel

Maximum Allowable Operating Pressure

150 psi (10 Bar)

Seat Materials

PTFE, Conductive PTFE, UHMWPE

Shutoff Rating

Bidirectional Bubble-tight

Disc Materials

Stainless Steel, PTFE/SS, PFA/SS, UHMWPE/SS, UHMWPE/DI, Hastelloy®, Titanium

Body Style

Wafer, Lug

Flange Drilling

ASME B16.1 Class 125, ASME B16.5 Class 150, EN 1092 PN 10, 16

Testing Standard

MSS SP-61, API 598, EN 12266-1

Certifications

ABS, ATEX, Bureau Veritas, DNV, PED, PE(S)R, SIL

Face To Face

MSS SP-67, API 609 Category A, EN 558 Series 20

Seat Energizer Material

Silicone | FKM

Features:

1. Corrosion-Resistant Lining: PTFE, PFA, FEP, or other durable linings protect against corrosive and abrasive fluids.
2. Durable Body Materials: Constructed from cast iron, ductile iron, stainless steel, or carbon steel for strength and longevity.
3. Versatile Disc Options: Discs made from stainless steel, ductile iron, or Hastelloy, often coated with corrosion-resistant materials.
4. Reliable Sealing: Seats made from PTFE, EPDM, NBR, or Viton ensure tight sealing and leak prevention.
5. Wide Size Range: Available in sizes from 2 inches to 48 inches (DN 50 to DN 1200) to suit various applications.
6. Pressure and Temperature Tolerance: Can handle pressures up to ANSI Class 150 and temperatures ranging from -20°C to 200°C (-4°F to 392°F).
7. Flexible Connection Types: Available in wafer, lug, and flanged connections for easy integration into different piping systems.
8. Multiple Actuation Options: Can be operated manually or equipped with electric, pneumatic, or hydraulic actuators for automated control.
9. Compliance with Standards: Meets standards such as API 609, ISO 5752, EN 593, and ASME B16.5, ensuring reliability and safety.

Benefits:

1. Versatility: The primary benefit of 4-way plug valves is their versatility in controlling flow direction and diverting fluids between different process lines or systems. They offer flexibility in system design and can replace multiple valves in certain applications.

2. Space Efficiency: By integrating multiple flow paths into a single valve body, 4-way plug valves can reduce the need for additional piping and valves, thereby optimizing space and simplifying installation.

3. Reduced Potential Leak Points: Compared to using multiple valves and fittings, 4-way plug valves minimize the number of potential leak points in a system, enhancing overall system reliability and safety.

4. Cost Savings: Consolidating multiple flow control functions into a single valve can lead to cost savings in terms of valve procurement, installation labor, and maintenance.

5. Efficient Flow Control: The design of 4-way plug valves allows for precise control over flow distribution and direction, making them suitable for applications requiring accurate flow management and process control.

6. Suitability for Complex Systems: They are well-suited for use in complex piping systems, such as in chemical processing, oil and gas, water treatment, and other industries where efficient flow routing and versatility are critical.

These features and benefits make lined butterfly valves an excellent choice for industries requiring robust and reliable fluid control solutions in challenging environments.

FAQs:

A. What is a lined butterfly valve?

A lined butterfly valve features a protective lining, such as PTFE or PFA, to resist corrosion and abrasion from harsh fluids.

B. Where are lined butterfly valves commonly used?

They are widely used in industries such as chemical processing, water treatment, pharmaceuticals, and food and beverage, where corrosion-resistant valves are essential.

C. What materials are used for the lining of these valves?

• Common lining materials include PTFE (Polytetrafluoroethylene), PFA (Perfluoroalkoxy), FEP (Fluorinated Ethylene Propylene), and PVDF (Polyvinylidene Fluoride).

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D. What are the advantages of using lined butterfly valves?

Lined butterfly valves offer excellent chemical resistance, durability, minimal maintenance, and long service life compared to traditional valves.

E. Can lined butterfly valves handle high temperatures and pressures?

Yes, they are designed to withstand a wide range of temperatures and pressures, depending on the specific lining and materials used.

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