CheckMate® Ultraflex™

The Inline Check Valve from TIDEFLEX

Providing low headloss and easy installation since 1998.

CheckMate Valves are cost-effective because they have a long life span and require no maintenance. Consider the Tideflex track record when making TOTEX decisions for your drainage asset management. Click here for a description of CheckMate valve benefits. If you are looking for a price for a particular CheckMate valve, fill in our quote request form today.

Odoo image and text block

Key Features

  • Low headloss maximises flow

  • Quick & easy to install & to retrofit

  • Fits into angled pipes

  • Does not protrude

  • DN75 - DN2100 standard sizes

  • Elliptical and Rectangular valves available

  • Slip In with C clamp or Flange

  • 1 year warranty standard - 3 & 5 year available

  • 25+ year design life

What Makes CheckMate® UltraFlex™ Valves Unique?

The CheckMate valve's unique elastomer-reinforced design provides a proven record of maintenance-free backflow protection, cost savings and results that no other inline check valve can match. The CheckMate valve has a 100% fabric and elastomer construction that eliminates corrosion problems. Because the CheckMate valve is made with a unibody construction, there are no mechanical components to catch debris, corrode or fail. The CheckMate valve offers the lowest headloss in the Tideflex range and is verified by in-house and independent testing.

The patented CheckMate UltraFlex Inline Check Valve features drastically improved hydraulic and performance characteristics to its predecessor, the original CheckMate Check Valve.  Strategically placed reinforcing ribs, segmented pads and the “Arc Notch” bill combine to significantly improve flow efficiency with significantly reduced headloss, while providing absolute backflow protection. 

These features result in significant savings over the long lifetime of the valve - both in time and overall costs.     

Contact us to discuss your design. We can provide technical information like drawings & dimensions, headloss charts, specifications and valve weight on request for projects.

CheckMate valve installation instructions can be found here.

There are also numerous documents available for download on our site and you can organise an office CPD here. 

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How To Fix A Leaking Flap Valve?

Install A CheckMate Valve Instead!

How Do CheckMate® UltraFlex™ Valves Work?

Odoo - Sample 1 for three columns


Odoo - Sample 2 for three columns

Partially Open

Odoo - Sample 3 for three columns

Fully Open

The CheckMate valve is a heavy duty, fabric ply-reinforced, vulcanized elastomer unibody product (larger sizes have integral wire reinforcement in the body as well). This makes it tough and durable, but flexible and easy to install.

Its "resting" position is closed with the saddle sealing against the body of the valve and so preventing unwanted entry into the upstream system, whether from backflow, smells or animals (such as rats). 

The CheckMate valve has a very low cracking pressure - upstream flows with as little as 1" (one inch) differential pressure across the valve will break the saddle seal and allow the system to drain.

The flat saddle area allows it to snap open under lower pressure than other types of similar valves, and when it closes again its flexible construction will seal around any debris until upstream flow can clear it away.

The valve is simply inserted into the pipe end and secured with internal expansion clamps in the end cuff (larger sizes require minimal pinning through the clamps). This makes it quick and easy to install on site.

Flanged valves, thimble inserts and valve arrays are also available. MeasurIT provide a complete advice and design service on these.