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Manhole cover range comparison chart

Manhole range comparison chart

Manhole cover features Tristar Highway Unite
CD 534 v0.1.0 compliant ✗ ✔ ✔
BSI Kitemarked to BS EN 124:2015 ✔ ✔ ✔
Safety keyway
Ensures lifting keys are held captive in the keyway during the lifting process, prevents accidental drops 		 ✔ ✔ ✔
BS 7903 flange gussets
Increases frame rigidity and reduce vibration transfer, extending the life of the installation		 ✔ ✔ ✔
Low wear seats
The cover and frame are designed to reduce seating wear, increasing installation life		 ✔ ✔ ✔
Asset identification badge
A location on the cover is available to retrofit an identification badge		 ✗ ✔ ✔
Simple and safe frame manoeuvring
The frame has lifting key points to enable simple and safe manoeuvring on site		 ✗ ✔ ✔
Hinged rectangular covers in range (safety stop hinge)
Hinge and lift out (Halohinge) covers, allowing covers to hinge open to 100° and be secured in place, prevent covers from falling, once opened, but can also be lifted out with standard lifting keys from a closed position		 ✗ ✔ ✗
Anti-flex covers
Prevents the causes of cover seating wear, eliminating excessive noise and catastrophic failure		 ✗ ✗ ✔
Mortar sympathetic frame features
Improves the bedding mortar adhesion to the frame, reducing lateral shift and mortar breakdown		 ✗ ✗ ✔
70+ PSRV
Tested and proven to achieve in excess of 70+ PSRV (Polished Slip/Skid Resistance Value) at the top surface of the chequer, by UKAS accredited third party		 ✔ ✔ ✔
Options / Accessories

Safety grille
Our factory-fitted safety grilles prevent accidental chamber falls and can be fitted with signage

 ✔ ✔ ✔

Screwlift compatible
Compatible with our Screwlift height adjustment system

 ✔ ✔ ✔

Gritblocker compatible
Keyway insert that prevents the keyway from becoming blocked with dirt and debris (included as standard on all Unite products)

 ✔ ✔ ✔

Flood and odour control (factory fitted)
A flood and odour control plate can be factory fitted on request

 ✔ ✔ ✗

Retrofittable seal plate (to leakage class 1, 2 or 3)
Simple to install on-site and can be drilled to provide low leak performance

 ✗ ✗ ✔

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