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Specialists in Bespoke Solutions

Valves

We are professionals in valve design, manufacturing and distribution, with of a range of engineered waterworks valves and associated equipment for all industries. The range extends to complete project packages incorporating actuated valves, fabricated operating equipment, pipework, valves gearboxes, and ancillaries - visit our Custom Valves page to find out more.

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Read about some of our most challenging and interesting projects

Air Valves & Hydraulic Analysis Ensure Pumping Efficiency

One of Europe’s largest paper manufacturers came to our experts for air valve positioning on their new industrial effluent processing plant, set to pump waste 500m via a network of overhead steel pipes.

With needing to accommodate a pre-existing layout and the distance the medium was to be pumped, carefully positioned air valves were needed to ensure efficient flow.

Overhead pipeline system on an industrial site.Overhead pipeline system on an industrial site.

Non-Return Valves for the Thames Tideway Scheme

When a major Iraqi-based oil refinery required custom-actuated butterfly valves for a large-scale plant refurbishment, T-T Flow’s expert product knowledge, access to quality manufacturing partners and extensive export experience made us the ideal choice to deliver a robust, reliable and fully compliant customised solution both on-time and within budget.

In addition to the non-standard materials, the client specified actuator connectivity to integrate with existing control panels and operating philosophy.

Non-return valves.Non-return valves.

Custom Actuated Butterfly Valves for Oiler Refinery

When a major Iraqi-based oil refinery required custom-actuated butterfly valves for a large-scale plant refurbishment, T-T Flow’s expert product knowledge, access to quality manufacturing partners and extensive export experience made us the ideal choice to deliver a robust, reliable and fully compliant customised solution both on-time and within budget.

Custom actuated butterfly valves.Custom actuated butterfly valves.

Bespoke Replacement for Legacy Check Valves

While refurbishing a Water Treatment Works under Southern Water (treating over 62 million litres of water per day), contractors discovered an obsolete valve that they struggled to identify and replace. An off-the-shelf solution was an option for the replacement; however, the site would have needed to undergo costly pipework modification in order to accommodate the new valve.

The T-T Flow team worked closely with the site’s engineers to determine the valve's primary function and its necessary critical dimensions.

Bespoke DN600 WRAS approved check valve.Bespoke DN600 WRAS approved check valve.

General Valve FAQs

What is the blue fusion bonded epoxy coating?
What is the difference between WRAS approved components and fully WRAS approved products?
Which valves are WRAS approved?
What do the abbreviations on the valve product pages stand for?
How do you position a valve?
What colour are T-T Flow valves?
Can a valve have a different flange drilling to its pressure rating?
Are there any design constraints?
Can safety guards be fitted to either side of a swing check valve?
Does T-T Flow test every valve?
What is a valve interlock?
What are valve operating elements?
Can valves be operated remotely?
What does PN (Pressure Nominal) mean?

Check Valve FAQs

What are the different types of check valves?
What is the difference between a spring check valve and a swing check valve?
Can a swing check valve be installed vertically?
What is the swing check valve operating pressure?
What is better, swing check valves or ball check valves?

Gate Valve FAQs

Can a gate valve be used to throttle or regulate flow?
What is the maximum operating pressure of T-T Flow's swing check valves?
What is a knife gate valve?
What is the difference between a gate valve and a butterfly valve?
What is the difference between NRS and OS&Y gate valves?
What is the difference between cast iron and ductile iron?
What are the design constraints?
Can gate valves be used at end of line?
How are gate valves operated?

Air Valve FAQs

What are air valves?
How does air get into fluid management systems?
What are the different types of air valves?
Where should air valves be installed along pipe lines?
How do I select the right air valve for my application?

Isolation Valve FAQs

What are the different kinds of isolation valves?
Where are isolation valves used?
How do I select an isolation valve?
What is a penstock valve?

Control Valve FAQs

What is a pressure control valve?
Can control valves be used as isolation valves?
What are the main types of pressure control valves?
How do pressure control valves work?
What causes pressure build-up in a system?

Brass Valve FAQs

What brass valves does T-T Flow offer?
What are the advantages of brass valves?

Valve Accessory FAQs

What is a flange on a valve?
What is jointing?
What are male and female flanges?
What is BS EN 1092?
What are valve T-Keys?
What is an extension spindle?

Valve Gearbox FAQs

What is a valve gearbox?
What are the different types of gearboxes?
What is a valve actuator?