Thetford Aqua-Magic V Water Module Assembly 31705 — Replacement Valve Kit, Fits High & Low Toilets

The Thetford 31705 Aqua‑Magic V water module assembly is a direct replacement valve kit designed to restore reliable flushing and water control in Aqua‑Magic V high and low toilets.

When your RV, boat, or mobile restroom starts showing leaks, weak flushes, or inconsistent water flow, replacing the toilet’s water valve is often the most efficient fix. Thetford’s OEM 31705 module supplies the valve, necessary hardware, and step‑by‑step instructions so you can get the toilet back to proper operation without guessing or mismatched parts. This assembly is engineered for compatibility with Aqua‑Magic V models and is produced by a company known for decades of sanitation solutions for mobile living.

How will this replacement valve resolve leak or flow problems?

Old or worn valves commonly cause drips at the inlet, poor flush pressure, or continuous water feed. Swapping in the 31705 module replaces the worn internal components and seals, eliminating common failure points and restoring tight shutoff and correct flow.

• Includes a pre‑matched valve designed for Aqua‑Magic V geometry to avoid fit issues.
• New seals and moving parts reduce leaks and restore proper water shutoff.
• Hardware provided for secure attachment to existing toilet mounting points.

Is installation something I can do myself, and how long does it take?

The kit ships with illustrated instructions to guide owners through a straightforward swap; basic hand tools are typically all that’s needed. An average DIYer familiar with RV or marine fixtures can finish the job in under an hour, depending on accessibility and plumbing layout.

• Step‑by‑step instructions included to simplify the process.
• No special tools or custom parts required—uses existing toilet connections.
• Typical install time: 30–60 minutes for accessible toilet installations.

Will this module fit both high and low Aqua‑Magic V models?

Yes—the Thetford 31705 assembly was made specifically to be compatible with both the high and low configuration variants of the Aqua‑Magic V line. That compatibility reduces the need to identify submodel differences before purchasing.

• OEM part matched to Aqua‑Magic V design specifications.
• Suits both high‑profile and low‑profile Aqua‑Magic V toilets.
• Eliminates uncertainty about cross‑compatibility for replacement parts.

What comes in the kit and what should I check before starting?

The 31705 package contains the new valve module, mounting hardware, and installation instructions so you have everything needed for the swap. Before beginning, shut off the water supply, drain remaining water, and verify the toilet model to confirm compatibility.

• Complete valve assembly plus all required screws and fasteners.
• Printed instructions with diagrams to guide assembly steps.
• Confirm toilet is Aqua‑Magic V and prepare basic tools (screwdriver, wrench).

Who is this for: The Thetford 31705 Aqua‑Magic V water module assembly is intended for RV owners, boat operators, fleet maintenance teams, and facility caretakers who need an exact replacement valve to eliminate leaks or restore flush performance. It’s a practical, cost‑effective option for anyone looking to repair an Aqua‑Magic V toilet without replacing the entire fixture, and it’s particularly useful for DIY maintenance or service professionals who require OEM‑matched parts for reliable results.