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Retrofit Dranjer FS2 Sump Seal (28010) Fits Most Sump Covers

Name: Retrofit Dranjer FS2 Sump Seal (28010) Fits Most Sump Covers
Brand: Dranjer
SKU: 2662
Price: 61.29 USD
Availability: InStock
Rating: 5.00 (111 reviews)

Model #: 28010

Condition: New

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Retrofit Dranjer FS2 Sump Seal (28010) Fits Most Sump Covers

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$61.29

Available to ship on or before:8/25/26 - 8/31/26

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Category: Vapor Barrier

Retrofit Sump Seal (28010) Dranjer FS2. Designed to attach to the bottom of a sump lid.

The Dranjer FS2 valve will not open at less than 0.9” of negative pressure yet allow for water flow.

The FS2 has a sealing ring that lifts when water enters the valve, allowing for the water to flow through the unit. In a no flow environment, the sealing ring prevents radon/ soil gas from passing through or past the unit. This effectively reduces radon/ soil gas levels in the dwelling.

	Inches	Centimeters

Retaining Ring Diameter	3.9	6.985
Below Grade Depth	3.75	9.525
Below Grade Width	1.7	4.318

Link to the technical data sheet.

Download Users Manual (PDF format).

When the flow stops the valve closes and radon/ soil gas can no longer flow up through the floor drain or sump cover. Effectively reducing radon/ soil gas levels in the dwelling.