150 x 150mm Grade A Double-Triangular Surface Box

This Grade A double-triangular surface box is designed for underground utility valve access where a compact but heavy duty cover is required. It is commonly specified for gas, water and surface valve networks in estate roads, highways, service yards and pedestrian areas.

The double-triangular lid arrangement provides a stable non-rock seating and allows access without the need for one large single cover. Integral lifting key holes assist routine maintenance and inspection visits.

Manufactured from spheroidal graphite iron, this unit is intended for external installations where strength, impact resistance and long service life are required. The black surface coating provides temporary protection during storage and installation.

This listing combines the available lid badging options so the correct utility marking can be selected at point of order. Choosing the right badge improves identification on site and helps reduce service errors.

Where no marking is required, a blank lid option is available.

• Grade A heavy duty loading for roadsides, estate roads and utility areas
• Double-triangular non-rock design improves lid stability in service
• Compact 150 x 150mm clear opening suits valve spindle access points
• Ductile iron construction provides strength and crack resistance
• Available with blank, G, W or SV badging for service identification
• Integral lifting key holes allow planned maintenance access
• BSI Kitemark certified to BS 5834-2:2011
• Black coated finish for supply and installation protection

Manufactured from spheroidal graphite iron grade EN-GJS-500-7 to BS EN 1563. This ductile iron grade is widely used for access covers where strength, durability and resistance to impact loading are required.

Product type: Double-triangular surface box cover
Suitable Location: External
Clear opening: 150mm x 150mm
Overall frame size: 262mm x 262mm
Frame depth: 100mm
Material: Ductile iron, EN-GJS-500-7
Finish: Black coated finish
Seal type: None
Locking: Non-locking
Load rating: BS 5834 Grade A (Heavy)
Lifting method: Lifting key holes
Fixings supplied: None
Weight: 7.5kg
Standards: BS 5834-2:2011, BS EN 1563
Options: Blank lid, Gas (G), Water (W), Surface Valve (SV)