Not always. Slot shapes and sizes vary by cover type and manufacturer. A universal kit with interchangeable T‑tips, J‑hooks and screw tips (often with a 250kg safe working load) covers most UK and European patterns and reduces the need for multiple sets.
Manhole Lifting Keys: Types, Uses and Compatibility
Manhole lifting keys are hand tools used to engage the lifting eyes or keyways on access covers so the lid can be raised safely for inspection and maintenance. This category typically includes paired T or D handle keys for standard slots, along with universal kits that add interchangeable tips (e.g., T‑tips, J‑hooks and M10/M12 screw tips) to suit different cover designs. Common materials include hardened or carbon steel for strength and corrosion resistance, with some ranges offering nylon or ductile‑iron options for specific weights and conditions.
Typical applications include lifting inspection chamber lids, drain gully covers and external access panels during blockage clearing, CCTV surveys or when setting out drainage runs. When removing or reseating lids, these keys work alongside Manhole Covers & Grates during routine checks, and they help create safe access when installing or altering Sewer Pipe & Fittings below ground. For paved areas, recessed trays can be handled with the appropriate tip pattern, which pairs naturally with surface finishing or channel runs in Line Drainage; where new services are routed, access is often required near Ducting, so compatible tips reduce the need for improvised tools.
Selection should consider the cover’s lifting slot pattern and expected loading. Cover load classes follow BS EN 124 (A15–F900) for site conditions, and BS 7903 provides UK guidance on features such as keyways and lifting arrangements, using a key that properly engages the slot reduces slip risk and helps maintain compliant practice. Practical use focuses on firm insertion, a stable stance and controlled, two person lifts for heavier lids; clearing debris, breaking any seal and using mechanical lifters where needed all improve safety and reduce strain.
Manhole Lifting Keys FAQ's
Match the tip to the lifting slot: T or D‑handle pairs suit many rectangular keyways and allow balanced two handed lifting; J‑type tips are commonly used for recessed trays and pressed steel patterns where a hook engagement is required.
Clear debris from the frame and keyways, confirm the tip fully engages, and plan where the cover will be placed. For stuck lids, free the seal first (e.g., gentle prising or a dedicated breaker), and switch to a mechanical lifter if resistance remains. Work in pairs for heavier covers.
Covers and gratings are specified to BS EN 124 (A15–F900) based on location and loading; BS 7903 adds UK guidance on design and installation details such as keyways. Choose keys that engage securely with the cover’s lifting feature and lift in a way that respects the cover’s rating and setting.
Yes, provided the tip matches the slot pattern. Many recessed trays accept J‑type or recessed cover keys; where compatibility is uncertain, a universal kit with multiple heads helps ensure proper engagement without damaging the tray