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Wras Valves

TTV Ductile Iron Wafer Butterfly Valves

TTV Ductile Iron Wafer Butterfly Valves

£59.99 GBP
£59.99 GBP
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⚠️ Now Fully WRAS Approved – Valve & EPDM Seat

TTV Ductile Iron Wafer Butterfly Valves with EPDM Seat

The TTV Ductile Iron Wafer Butterfly Valves are now fully WRAS approved, with both the EPDM seat and the complete valve assembly certified for use in potable water applications. Designed for reliable performance across water treatment, HVAC, and industrial systems, these valves combine mechanical strength with certified safety for drinking water systems.

With a wafer-style body that installs easily between PN10/16 or ANSI 150 flanges, these valves offer low-pressure drop, tight shut-off, and smooth operation with minimal torque. Whether used manually or paired with an actuator, they provide robust and efficient control across a wide range of systems.

Key Features:

- WRAS Approved Valve & EPDM Seat – Fully certified for contact with potable water
- Ductile Iron Body – High strength and durability for long service life
- Wafer Style Design – Quick and secure installation between standard flanges
- Reliable Shut-Off – Bubble-tight EPDM sealing under pressure
- ISO 5211 Mounting Pad – Compatible with direct actuator installation
- Low Torque Operation – Smooth and efficient, ideal for automation
- Serviceable Construction – Replaceable seat and disc for simplified maintenance

A cost-effective and compliant choice for engineers and installers seeking dependable, fully WRAS-approved valves for potable water systems and beyond.

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FAQ's

What is the difference between a valve and an actuator?

A valve controls the flow of a fluid (such as water, gas, or steam), while an actuator is the device that operates the valve — automatically opening, closing, or positioning it. Actuators can be electric, pneumatic, or hydraulic, depending on the application and control requirements.

What types of actuators are available?

The main types of actuators are:

Pneumatic actuators – use compressed air for fast, reliable operation.

Electric actuators – use electrical power for precise control.

Hydraulic actuators – use fluid pressure for high-torque applications.

Each type offers unique advantages depending on the environment, media, and system control needs.

How do I choose the right actuator for my valve?

To select the correct actuator, consider:

Valve type and torque requirement

Power source available (air, electric, or hydraulic)

Operating environment (temperature, humidity, hazardous area)

Control signal type (on/off or modulating)

Matching actuator torque and compatibility with the valve’s ISO mounting ensures reliable performance.

What are the main types of valves used in automation?

The most common valves in automated systems include:

Ball valves – for tight shutoff and quick operation.

Butterfly valves – for larger flow control with compact design.

Globe valves – for precise throttling and flow regulation.

Check valves – to prevent backflow.

Gate valves – for full bore flow isolation.

What’s the difference between a double-acting and spring-return actuator?

Double-acting actuators use air (or power) to both open and close the valve.


Spring-return actuators use air to open (or close) the valve, and a built-in spring to automatically return it to a safe position when power or air is lost — ideal for fail-safe operation.

How often should valves and actuators be serviced?

Regular maintenance intervals depend on operating conditions, but a good rule of thumb is to inspect every 6–12 months.

This includes checking for leaks, lubrication, seal wear, and actuator responsiveness to prevent unexpected downtime.