AWWA C504 ptfe butterfly valve, as a type of cast iron butterfly valve, are used in water and wastewater systems for shutting off liquid and gas media. Double eccentric design with resilient seat provides tight shutoff, are easy to operate even with large pressure differential and requires little space for installation. High strength ductile iron body used for lowering the weight and improving long term durability. AWWA C504 teflon coated butterfly valve can be used for isolation or throttling application. Double eccentric design butterfly is used for lowering the friction between the disc and the seat. The shaft and disc are connected by tangential pins. These provide a strong connection and are exchangeable to increase the lifetime of the valve. Valve design is compliant with AWWA C504 & API 609. These Butterfly Valve systems are widely used in industrial valve service environments. Such products deliver stable performance in demanding operating conditions.

Features for PTFE teflon butterfly valve

Soft Rubber Seat in Body

When the rubber seat of a teflon lined butterfly valves is located on the moving disc edge, it will erode or tear away as it plows its way through line buildup, causing the valve to leak. KFTE AWWA C504 ptfe lined butterfly valve with a rubber seat in body design, the stainless steel disc edge provides the resistance necessary to plow through line buildup without seat-on-disc edge damage.

Stainless Steel Disc Edge

Solid 316 stainless steel disc edge provides the corrosion and abrasion resistance essential for long-lasting, maintenance-free service. The stainless steel disc edge is on all disc materials including iron, carbon steel and aluminum bronze discs.

Offset Disc Design

The offset disc provides an uninterrupted 360° sealing surface. The sealing surface is not interrupted by the valve shaft and does not have any continuous contact points between the rubber seat and the disc edge. This results in a longer seat life.

Adjustable, Replaceable Seat

As required by AWWA C504, the rubber seat in body design offers field adjustment and replacement capabilities. Proper field adjustment can be performed from either the upstream or downstream side of a pressurized valve.

There are many teflon lined butterfly valve manufacturers, but we are the best choice for you.

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EN593 Cast Iron Eccentric rubber lined valve is one type of double eccentric flanged butterfly valve. KFTE double rubber lined butterfly valve are designed with tilted and fixated disc for extended service life and easy operation. The disc seal is made of drinking water approved EPDM rubber featuring an excellent compression set and thus ability to regain its original shape. EN558-1 series 14 long type flanged eccentric butterfly valve is one type of high performance butterfly valve long pattern length, which is with eccentric action reduces torque and seat contact during operation, extending valve service life. Its seat can be repaired on site, no needing dis-assembly. The double flanged eccentric butterfly valve is suitable for 90° on-off operation and regulation service. The double eccentric butterfly valve long time face to face is according to ISO5752 series 14. These Butterfly Valve systems are widely used in industrial valve service environments. Such products deliver stable performance in demanding operating conditions.

Features for epdm lined butterfly valves

STANDARDS

Design & manufacturing: EN593-2004

Face to face: EN558-1 series 14, DIN3202-F4

Flanged ends: ISO7005-2, EN1092-2, DIN2501

Top flange: ISO 5211

Inspection & testing: EN12266

TECHNICAL SPECIFICATIONS

Pressure: ANSI 125/150LB, PN1.0/PN1.6MPa

Size: 2″~96″ (50~2400mm)

Materials: A126 B (GG25), A536 65-45-12 (GGG40)

Epoxy coating with thickness ≥ 250μm

Applicable medium: water, sewage, sea water, air, corrosive liquids

Applicable temperature: -45℃~+150℃ (higher temperature is available upon request)

1. Polished disc edge provides full concentric sealing with lower torque and long service life.

2. Bi-directional sealing which is suitable for normal flow and contraflow working condition.

3. Cylindrical pin enables a vibration free connection between the shaft and the disc.

4. Rubber seats vulcanized on the body in such a way that the seats protrude a little outside the valve body (this eliminates need for a flange gasket).

5. Replaceable seal held with seat ring on the disc allows easy maintenance.

FEATURES

Eccentric action reduces torque and seat contact during operation, extending valve service life

Suitable for 90° on-off operation and regulation service

The seat can be repaired on site, no needing dis-assembly

Epoxy coating for corrosion resistance and long service life

Good sealing capability, no leakage

APPLICATIONS

Water works, water projects

Environment protection

Public facilities

Power plant

Building industry, real estate

Petroleum, chemical industry

Steel work, metallurgy

For more information about butterfly valve rubber and asian industrial valves & instruments, please feel free to contact us!

There are many rubber lined butterfly valve manufacturers, but we are the best choice for you.

Pressure Seal Globe Valve are ideal for unidirectional, controlled flow in modern industrial valve service applications. The flow characteristics of a globe valve are repeatable, consistent, and easy to control at various open positions, which makes them ideal for general flow regulation. pressure seal bonnet globe valve represent robust, emission-free solutions for managing hazardous fluids from superheated steam to unstable chemicals. These advanced products include engineered configurations such as the cast globe valve, designed to ensure durability and sealing integrity under extreme operating conditions. Their distinguishing tapered bonnet design indents resilient seals against the body and stem using precise metal-to-metal contact force. This achieves non-degrading barriers able to withstand extreme pressures and thermal shocks above 1,500 psi without external leakage. Pressure seal construction proves critical for protecting assets, processes, and personnel through leak-tight reliability. Their capacity to contain fluids makes them cornerstones of safety programs across risk-intensive industries.

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A Pressure Seal Swing Check Valve is a specialized type of check valve designed for high-pressure and high-temperature applications, commonly used in power plants, oil and gas refineries, and steam systems. It combines the reliability of a swing check valve with a pressure-sealing mechanism to ensure leak-free performance under extreme operating conditions in modern Pressure Seal Check Valve service environments.. Pressure Seal Bonnet:Utilizes a self-energizing pressure seal design, where internal system pressure compresses a metallic gasket (typically graphite or soft iron) against the bonnet and body. This creates a tighter seal as pressure increases, preventing leaks in high-pressure systems (e.g., steam lines above 1000 psi/69 bar), making it one of the key engineered products in critical applications. Robust Construction:Manufactured from high-strength materials such as forged steel, stainless steel, or alloy coatings (e.g., Inconel, Stellite) to withstand temperatures up to 1200°F (650°C) and resist corrosion, erosion, and thermal stress. The Pressure Seal Check Valve is critical for systems where safety, efficiency, and leak prevention are paramount. Its ability to maintain integrity under extreme conditions makes this forged check valve indispensable in modern power generation and industrial fluid control systems.

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