380 x 230mm Grade A Surface Box

Name: 380 x 230mm Grade A Surface Box
Brand: Clark Drain
SKU: CD 847
Availability:  InStock

Clear Opening: 380mm x 230mm
External Dimensions: 490mm x 340mm x 100mm

Heavy duty ductile iron surface box cover for valve chambers in highways, estate roads and pedestrian areas. Choose one-piece solid top or double-triangular lid styles, with blank or utility badged options.

BS 5834 Grade A loading with robust iron construction for external service access points exposed to regular traffic loading.

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SKU:CD 847

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380 x 230mm Grade A Surface Box

Description

This 380 x 230mm surface box cover range is designed for underground utility access chambers where a larger clear opening is needed for valves, controls or service equipment. It is commonly specified across highways, estate roads, footways and utility infrastructure.

This multi listing combines two proven lid styles with the same clear opening size. The solid top version uses a one-piece lid for straightforward access and secure seating. The double-triangular version uses two lifting sections with a non-rock seating design, often preferred where repeated maintenance access is expected.

Both models are manufactured from spheroidal graphite iron for strength, durability and resistance to repeated traffic loading. Integral lifting key holes are provided for planned access.

Badged versions are available to identify the service below, helping maintenance teams locate the correct chamber quickly. Depending on lid style, options include Air Valve, Surface Valve and blank covers.

This combined listing simplifies selection while keeping one clear product page for the 380 x 230mm size.

Key Features

BS 5834 Grade A heavy duty loading for trafficked external areas
380 x 230mm clear opening suits larger valve chambers
Choice of solid top or double-triangular lid style
Double-triangular option offers sectional lifting and non-rock seating
Solid top option provides simple one-piece access cover
Ductile iron construction delivers long service life
Integral lifting key holes for maintenance access
Available blank or utility badged options
Black coated finish for supply and installation protection

Material Composition

Manufactured from spheroidal graphite iron grade EN-GJS-500-7 to BS EN 1563. This ductile iron grade is commonly used where access covers must withstand repeated loading and outdoor service conditions.

Product Specifications

Product type: Surface box cover
Suitable location: External
Clear opening: 380mm x 230mm
Overall frame size: 490mm x 340mm
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: Solid top 18kg / Double-triangular 20kg
Standards: BS 5834-2:2011, BS EN 1563
Options: Solid top or double-triangular lid, Blank, Air Valve (AV), Surface Valve (SV)

About this collection

Surface Box Covers

Surface box covers are access covers designed to protect and provide access to underground utility valves. They are commonly installed in footpaths, verges and roadways for water, gas and other service connections.

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FAQs

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What is the difference between solid top and double-triangular?

Solid top uses one lifting lid. Double-triangular uses two sections with a non-rock seating design.

Are both options the same size?

Yes. Both provide a 380mm x 230mm clear opening with a 100mm deep frame.

What badge options are available?

Options depend on lid style and include:

Blank
Air Valve (AV)
Surface Valve (SV)

Is this suitable for roads?

Yes. These models are Grade A heavy duty units intended for estate roads, highways and pedestrian areas, subject to project requirements.

Which lid style should I choose?

Choose solid top for straightforward access. Choose double-triangular where frequent access or sectional lifting is preferred.

380 x 230mm Grade A Surface Box