Brett Martin 315mm Chamber Riser 185mm Invert (Inc. Seal)

Key Features & Benefits:

• Watertight Seal Included: Supplied with a factory-fitted rubber ring for leak-resistant, push-fit installation.

• Regulatory Compliant: Tested to EN 13598-1, meeting UK Building Regulations Part H1 guidelines.

• Trim to Fit: Easily cut with a hand saw to fine-tune invert levels on-site.

• Durable Construction: Built with a high-strength ribbed structure to withstand ground loading.

• Simple Integration: Fits standard 315mm shallow access chamber bases (such as B3156 or B3150) and matching cover frames.

Achieve the exact height required for underground drainage inspections with the Brett Martin B3157 Shallow Access Chamber Riser.Engineered for 110mm underground drainage layouts, this 315mm diameter riser provides an effective 185mm invert depth and comes complete with a secure, factory-fitted rubber seal to guarantee a watertight push-fit connection.

Fully compliant with Building Regulations Part H1 and BS EN 13598-1, this riser is suitable for both adoptable and non-adoptable shallow access chamber installations up to a maximum depth of 600mm.Designed for durability and ease on-site, the riser features connecting lugs for enhanced stability during assembly and can easily be cut down with a standard hand saw to meet your precise finished ground level.

Trade Note: To build a complete shallow access chamber up to a 600mm depth, use 1x 315mm Chamber Base, up to 2x B3157 Risers, and a compatible 315mm Cover & Frame (e.g., B3153 or B3154). Always use pipe lubricant on the elastomeric seal during assembly.

Product Specifications

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