PTFE Seat Koei UNIC Actuated Electric Butterfly Valves

The PTFE Butterfly Valve features a non-toxic PTFE seal that also partially covers the outer body of the valve for perfect sealing with counter flanges. This makes them ideal for use in highly corrosive environments and higher service temperatures where traditional materials fail. The versatile Koei UNIC electric Actuator is an ideal choice for all your electrical actuating needs and site standardisation with more than 8 individual sizes available we're sure there's one that will fit all of your electric requirements perfectly. At Actuation Valve & Control all of our assembly and testing of actuated butterfly valves is done in-house by our highly skilled team engineers offering Direct Mount, Plate Adaptor & Custom Build Bracket/Shaft Assemblies.

Key Features

Key features and benefits of the 20WP4040F0TEK Actuated Butterfly Valves.
1

Key Features

The High Performance Wafer Pattern PTFE Butterfly Valve is a high-temperature, chemical resistant valve that can handle extreme conditions. The internal seal of this unit consists of non-toxic and durable material.
2

Key Features

All of our actuated butterfly valves can be set up in either the Fail Safe Close/Open Position with several manual override features across the range. Control and Indication add-ons can be specified at the time of order.
3

Key Features

The Koei UNIC Electric Actuator features an easy to use Allen Key Manual Override, overload protection system and end of travel electric stop. It also includes a mechanical limit/mechanical switch for open and close indication on your control panel.

PTFE Seat Wafer Butterfly Valve Dims

A B C D E
1.5" 145.00 316.00 159.00 TBA 33.00
2" 155.00 358.00 208.00 TBA 43.00
2.5" 155.00 363.00 208.00 TBA 46.00
3" 187.00 379.00 257.00 TBA 46.00
4" 187.00 397.00 257.00 TBA 52.00
5" 187.00 416.00 257.00 TBA 56.00
6" 187.00 425.00 257.00 TBA 56.00
8" 187.00 465.00 257.00 TBA 60.00
10" 272.00 484.00 381.00 TBA 68.00
12" 272.00 516.00 381.00 TBA 78.00
14" TBA TBA TBA TBA TBA
16" TBA TBA TBA TBA TBA
18" TBA TBA TBA TBA TBA
20" TBA TBA TBA TBA TBA
24" TBA TBA TBA TBA TBA

PTFE Seat Wafer Butterfly Valve 3D

Actuated Valve Testing & Calibration

All actuated valve assemblies are fully tested and calibrated in house prior to packing and shipping from our expert team of technical engineers. This means that when they arrive at site, you're immediately ready to install and get your production back up and running.

Need More Dimensions?

No time for fancy software or your tekkers are just pretty substandard? We offer a full technical drawing service for our actuated valves. The Artists are ready to draw. Tell us what you need.

Valve Standards & Stuff

Body Material: GJS500-7 Ductile Iron Rilsan Coated
Disc Materials: Stainless steel (CF-8M), Duplex
Shaft Materials: AISI 316, 17-4PH, Duplex
Face To Face: ISO 5752 Series 20, BS 5155 Wafer, DIN 3202 Part 3, Series K1
Pressure Testing: EN 12266-1, DIN 3230, BS 6755, ISO 5208
Connections: PN10/16 ANSI 150, ISO 705, DIN 2501, BS 4504, ANSI Class 150 ANSI B16.5
Sealing Testing: ISO 5208, API 598

Frequent Interrogation

It’s an electric butterfly valve equipped with a chemically resistant PTFE seat and powered by a Koei UNIC electric actuator, providing reliable automated control for industrial flow applications.

PTFE delivers excellent resistance to corrosive chemicals, ensures a smooth low-friction seal, and prevents contamination—ideal for aggressive media or high-purity processes.

Koei UNIC actuators are manufactured in Japan with durable components, built-in manual override, precision gearing, and a strong enamel coating designed for long life in industrial environments.

Yes. The Koei UNIC actuator can be configured for simple on/off service or for accurate modulating control with the right control modules and position feedback.

They are ideal for chemical processing, pharmaceuticals, water treatment, food and beverage systems, and general process automation where chemical resistance and reliability are essential.

Absolutely. The PTFE seat provides excellent chemical compatibility, making the valve suitable for solvents, acids, and other challenging process fluids.

Maintenance is minimal. The PTFE seat offers long-term sealing performance, and the Koei UNIC actuator requires only basic periodic checks to maintain optimal operation.

In many installations, yes. Depending on the body style (lugged or wafer), the valve can be used to isolate portions of the pipeline for maintenance or inspection.

PTFE remains stable under elevated temperatures within its rated limits and offers complete insolubility, ensuring long-lasting sealing performance.

Yes. Replacement PTFE seats, seals, mounting hardware, and actuator components are all available to keep the valve operating reliably over many years.

Non Toxic FDA Approved PTFE

The wafer-pattern concentric design uses a non-toxic PTFE internal seal that also extends across part of the butterfly valve’s outer body, creating a tight, reliable seal against mating flanges. This prevents any risk of cross-contamination and delivers chemical and solvent resistance comparable to what you’d expect from a premium ball valve. With complete PTFE insolubility up to 300°C, the result is a butterfly valve engineered for demanding, high-purity applications.

Engineered Shaft Design

A one-piece shaft design delivers exceptional strength and stability to the butterfly valve, while allowing direct mounting of actuation components. This setup keeps the process fluid fully isolated from both the shaft and the valve body — a performance characteristic you’d typically associate with a high-quality ball valve. By removing the need for a customised mounting kit, it also cuts down on unnecessary cost and installation time.

Streamlined Butterfly Valve Discs

Greater CV Potential & Less Pipe Space

TTV’s streamlined discs produce a much greater Cv than other butterfly valves on the market resulting in low-pressure drops and reduced energy costs while maintaining a bi-directional zero leakage seal when in the closed position. Low operational torque and reduced friction reduces the costs of gear, pneumatic and electric actuation whilst extending the life of the valve seal. A silicone elasticised gasket facilitates the valve sealing. 

For applications which require abrasion resistance the option of a UHMWPE (Ultra-High-Molecular-Weight-Polyethylene) is available for this particular butterfly valve.

Less space, results in less material, bringing significantly lower costs in the process. As part of Isolation applications, our valves can be fully open or fully closed with quarter turn movement (90 Degrees) of the functioning lever or actuator. When closed, the reliable seal and disc can provide 100% leak tight downstream shutoff and low-pressure loss across the valve when opened through a streamlined, energy saving metallic disc. These types of valves can also be used to regulate flow pressure or temperature through a multi-position lockable lever or 4-20mA 3-15 psi control.

Actuated Butterfly Valves are available in both pneumatic and electric operation and can be beneficial for use in remotely accessed areas, valves that require larger torque figures to operate, timing or synchronisation and reliability. Pneumatically Actuated Butterfly Valves provide the quickest form of operational control for open/close functionality and are available in both double acting and spring return units with either direct/solenoid operation. Spring Return units can be set up in a fail-safe closed mode for critical lines were the Valve will return to the closed position upon the event of power failure through the loaded springs. Fail-safe open Valves are also available upon request.

Fail-Safe Battery Backup

Fail-Safe Battery Backup is available for this product. In the event of a possible power failure the Actuator will return the Valve to a desired position. Ideal for critical line applications where safety is paramount. Will need some additional details from you. Pick up the phone and we will get you sorted faster than it takes Kipchoge to run a Marathon fuelled by 5 Red Bulls. Supercharged Customer Service.
Request more information or Advice

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PTFE Seat Wafer Pattern Electric Koei UNIC Actuated Butterfly Valves