Lever-Gear Operated Butterfly Valves

The TTV 20WP4040F0 PTFE seat Butterfly Valves offer superior performance to that of a soft seat rubber lined valve. This includes higher pressure ratings and temperatures as well as further resistance to chemicals and abrasion. The split body design allows for efficient future maintenance requirements with replacement seats readily available as required. This is particularly common for the aforementioned abrasive mediums providing a more cost effective option to that of a complete new Valve. A sustainable isolation solution.

Key Features

Key features and benefits of the 20WP4040F0 Wafer Pattern Butterfly Valves.
1

Key Features

TTV Butterfly Valves feature an innovative disc design that greatly increases Cv values resulting in lower energy costs and improved efficiency with no sacrifice in performance or durability compared to other manufacturers valves on the market.
2

Key Features

The TTV PTFE range of butterfly valves feature a state of the art design from years of research and development with corrosive and aggressive chemical manufacturers as well as food and beverage. The bubble tight shutoff provides complete isolation when you need it most.
3

Key Features

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.

Top Notch.

All Butterfly Valves come as standard with a Top Notch Lock Plate. Adjustable at set degrees throughout the Valve travel cycle. Are your current supplies as good? We very much doubt it.

Valve Standards & Stuff

Body Material: GJS500-7 Ductile Iron Rilsan Coated
Disc Materials: PTFE, PFA, UHMWPE Stainless steel (CF-8M)
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

A lever-operated butterfly valve is manually opened and closed using a handle for quick shut-off in smaller sizes, while a gear-operated valve uses a handwheel and gearbox for easier operation on larger or higher-torque valves.

Gear operation is preferred for valves typically above DN150, or where higher torque is required due to pressure, flow rate, or tight sealing. Lever operation is more practical for smaller valves needing fast manual control.

Common body materials include cast iron, ductile iron, carbon steel, and stainless steel, while discs are typically made from stainless steel, aluminium bronze, or nickel-plated iron depending on the application.

Seats are available in EPDM, NBR, Viton, and PTFE, providing compatibility with a range of fluids, gases, and operating temperatures.

Yes, lever and gear operated butterfly valves can be used for both on/off isolation and flow regulation, offering cost-effective and precise throttling control.

For smaller systems requiring quick manual adjustment, a lever is ideal. For larger or high-pressure systems, gear operation provides smoother control and reduced operator effort.

Standard lever and gear operated butterfly valves are rated up to PN16 or ANSI 150, though higher pressure options are available depending on material and design.

Yes. Most lever and gear operated butterfly valves are designed with an ISO 5211 mounting pad, allowing easy retrofitting of a pneumatic or electric actuator if automation is later required.

They are widely used in water treatment, HVAC, marine, food processing, power generation, and chemical industries, providing reliable flow isolation and control.

Non Toxic FDA Approved PTFE

The wafer pattern concentric design incorporates a non-toxic PTFE internal seal that extends slightly over the outer body, ensuring a tight, reliable seal against counter flanges. This construction eliminates any risk of cross-contamination while delivering exceptional resistance to chemicals and solvents, maintaining complete insolubility even at temperatures up to 300°C.

Engineered Shaft Design

A one-piece shaft design provides exceptional strength and stability while allowing direct mounting of actuation assemblies. It also keeps the process fluid completely isolated from both the shaft and valve body, removing the need for any customised mounting kit and reducing additional installation costs and time.

Immense Stocks

Powerful Specifications

Size Range: DN32-DN300 (1 1/4"-12")
Body Materials: Rilsan Coated Ductile Iron
Disc Materials: Stainless Steel (CF8M), Duplex
Seat Materials: PTFE
Shaft Materials: 316 Stainless Steel, 17-4PH, Duplex
Applications: Chemical, Petrochemical, Pharmaceutical, Petroleum, Food & Beverage, Consumer Health, Abrasive, Solvent, High Temperature, Sea Water
Pressure Rating: PN10/16 ANSI 150
Temperature Rating: Max 200°C
Actuation: Lever Operated, Hand Wheel / Gear Box Operated, Extended / Extension Chain Wheel

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.

Request more information or Advice

Please feel free to request information and advice using the form below or call us on 0151 547 1221

PTFE Seat Wafer Pattern Butterfly Valves

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