Valterra Universal Bayonet Adapter Thetford-to-3" 3" White — Tool-Free, Leak-Resistant

The Valterra T05-2285VP is a compact white universal adapter that converts a Thetford 3" bayonet waste valve to accept standard 3" bayonet fittings.

When you need to link a standard waste hose or fitting to a Thetford-style valve, this small, purpose-built adapter saves time and eliminates makeshift connections. Molded in durable white plastic, the unit fits between a Thetford valve and common 3" bayonet accessories so you can swap hoses, seals, or dump fittings without modifying the RV or toilet valve itself.

How does this adapter make connecting waste fittings easier?

The adapter creates a direct, compatible join between Thetford bayonet valves and standard 3" bayonet fittings so you can use off-the-shelf hoses and couplers. Installation is tool-free and reversible, preserving the original valve for future use.

• 3" standard bayonet one side, 3" Thetford bayonet on the other for cross-compatibility
• Push-and-twist bayonet interface for quick attachment and removal
• No permanent alterations to RV plumbing or valve hardware

Will the adapter keep connections leak-free during dumping?

Designed to match bayonet dimensions, the adapter provides a snug fit that minimizes gaps and reduces splashing or drips during transfer. Properly seated fittings and routine inspection of seals ensure the tightest connection.

• Outer diameter 3.5" and inner diameter 2.5" for correct alignment
• Ear-to-ear width of 4" for stable mounting and engagement
• Use with compatible bayonet hoses and inspect rubber seals regularly

What are the physical dimensions and materials I should expect?

This adapter is lightweight yet sturdy, sized to work with standard RV bayonet fittings while keeping a low profile. Its white plastic finish resists corrosion and stands up to the handling typical of dump station use.

• Outer diameter (O.D.): 3.5" for external mating accuracy
• Inner diameter (I.D.): 2.5" to preserve flow capacity
• Ear-to-ear dimension: 4" ensures reliable bayonet engagement

Who is this for? RV owners, campground maintenance staff, and anyone servicing mobile sanitation systems who needs a simple, reliable way to adapt Thetford-style valves to widely available 3" bayonet fittings will find this adapter useful. It’s ideal when you want a quick, reversible solution to connect different hose styles without buying a new valve. Keep one in your service kit for roadside fixes, campsite hookups, or when upgrading hose assemblies.