General Wire S-4F 4" Flood-Guard Standpipe Model Threaded

Ultimate Standpipe Protection

Keep basement floors dry during sewer surcharges by giving backups somewhere else to go. The General Wire Flood-Guard™ S-4F is a standpipe-style backwater device for 4″ floor drains: when the main line backs up, water rises safely in a vertical standpipe instead of onto the floor. The S-4F threads into the drain body for a secure install and accepts a removable standpipe (field-supplied) to match your protection height—simple, effective, and service-friendly.

• Brand: General Wire / General Pipe Cleaners
• MPN: S-4F
• Type: Floor-drain backwater device, standpipe model, threaded
• Size/Capacity: Fits 4″ floor drains (standpipe height determines holding capacity)
• Material/Finish: Molded rubber sealing components with plated/stainless hardware
• Performance: Diverts sewer backup into a vertical standpipe to help prevent floor overflow
• Connections/Fit: Threaded mount for 4″ drain body; accepts a vertical standpipe (field-supplied; see manual for thread/pipe compatibility)
• Dimensions: Device height and footprint are drain- and layout-dependent (see installation guide)
• Included: S-4F standpipe model body with sealing hardware (standpipe not included)
• Certifications/Compliance: See manufacturer literature and local code requirements
• Warranty: Manufacturer limited warranty (see terms)

Protect Floors During Backups

Rather than letting sewage overflow onto the floor, the S-4F routes surcharged water up a vertical standpipe, buying time until pressure subsides or service arrives—ideal for heavy rain events and municipal surcharges.

Everyday Reliability

A straightforward standpipe design has no power, batteries, or electronics to fail. Once installed, it passively protects the space and resets automatically as conditions normalize.

Durable Materials, Simple Care

Tough gaskets and corrosion-resistant hardware are built for damp floor-drain environments. Periodic inspection and occasional gasket cleaning are typically all that’s needed.

Installer-Friendly Threaded Mount

The S-4F threads into a 4″ drain body for a secure, reversible install—no breaking concrete or repiping. Add a field-supplied standpipe to set your desired protection height (see manual for pipe/thread details).

Sized Right For 4″ Drains

Designed for standard 4″ floor drains in basements, utility rooms, and garages. For other sizes or float-type flood guards, see the matching models in the Flood-Guard™ family.

Plan For Your Site

Choose a standpipe height that keeps water in the pipe and away from finishes while remaining accessible for monitoring. Always follow local code and manufacturer guidelines.