Dometic Vacuum Breaker + Hand Spray Kit | 385319055 | Old 510/511

Add hand sprayer functionality to your older Dometic Sealand 510, 511, or other compatible Dometic RV toilet with the Dometic 385319055 Vacuum Breaker with Extension and Spray Kit in white. This genuine Dometic OEM kit includes everything needed for a complete hand sprayer installation — vacuum breaker (with extension tube for added clearance), hand sprayer, and all mounting hardware. The right kit for buyers adding hand sprayer convenience to OLDER Dometic toilet models, including the original Sealand 510, 511, and many other pre-500+ generation toilets.

⚠️ For OLDER 500 Model Toilets — NOT for 500+

The single most important fitment detail: this kit is specifically for the older 500-series toilets and is NOT compatible with the 500+ (500 Plus) generation.

• WILL fit: Original/older Sealand 510, 511, and other listed older Dometic toilets
• WILL NOT fit: Sealand 500+, 510+, 511+ (Plus generation)

If your toilet is the Plus (+) generation, this kit will NOT work. Verify which generation you have before ordering — the Plus generation uses different hand sprayer hardware.

Have a 500+ Generation Toilet? Need a Newer Kit?

If your toilet is a Sealand 500+, 510+, or 511+ Plus generation, consider these alternatives instead:

• Dometic 385319054 Complete Vacuum Breaker + Hand Sprayer Kit — for pedal flush Series 100 through 3400 (includes 500 Plus compatibility per source documentation)

Complete Hand Sprayer Installation Kit with Extension

The 385319055 ships ready for complete hand sprayer installation:

• Vacuum breaker with extension tube — for extra clearance when connecting to your toilet (key feature for tight installations)
• Hand sprayer
• Mounting fasteners and hardware

The extension tube is the differentiator versus other hand sprayer kits — it provides the additional clearance needed for certain older toilet installations where the vacuum breaker has to be routed around existing components.

What This Kit Does

The hand sprayer adds two meaningful capabilities to your toilet:

• Bowl cleaning — direct rinse stream for stubborn waste or staining
• Personal hygiene — bidet-style functionality

The vacuum breaker is the critical safety component that stops backflow from your toilet back into your fresh water tank or city water source — preventing cross-contamination between the toilet system and your RV's potable water supply. Required for safe, code-compliant hand sprayer installations.

Wide Compatibility with Older Dometic Toilets

The 385319055 fits an extensive range of compatible older Dometic toilet series:

Older Series with Hand Sprayer Option

• 100 Series
• 200 Series
• 500H
• 510 (original, NOT 510+)
• 511 (original, NOT 511+)
• 700 Series
• 800 Series
• 900 Series
• 1000 Series
• 2000 Series
• 3000 Series
• 4000 Series

Specific Modern Model Compatibility

• 300 Series Weekender: 9108765630 (DOM84FR)
• 310 Series Part-Timer: 9108923943 (DOM97FR), 9108923944 (DOM47FR)
• 320 Series Full-Timer: 9108781899 (DOM39FR), 9108781898 (DOM59FR)
• 321 Series Full-Timer: 9108782781 (DOM49FR)
• 500 Series Full-Timer: 9108553010 (DOM29FR)

Verify your existing toilet's model and series before ordering. The kit also works with VacuFlush and Traveler RV toilets that use the same hand sprayer architecture.

Stops Backflow — Critical Safety Function

The vacuum breaker in this kit performs the essential safety job of preventing backflow contamination:

• Blocks contaminated water from flowing back from the toilet into the fresh water supply
• Protects fresh water tank and city water connection from cross-contamination
• Required for code compliance in most hand sprayer installations
• Maintains hygiene by ensuring water only flows one direction through the system

Made in the USA

The 385319055 is manufactured in the USA — a meaningful provenance credential that some buyers specifically look for in Dometic OEM replacement parts.

⚠️ Professional Installation Recommended

Toilet hand sprayer installation involves working with fresh water supply lines, vacuum breaker integration with extension tube routing, and bracket mounting on RV interior surfaces. Installation should be performed by a qualified RV service technician for code-compliant, leak-free results — particularly because the vacuum breaker provides critical backflow protection for your fresh water supply.

Genuine Dometic OEM Replacement

As a Dometic factory replacement part, the 385319055 is built to original specifications for a precise fit on compatible older Dometic toilet installations.

Key Features

• Genuine Dometic OEM hand sprayer kit
• Includes vacuum breaker WITH extension tube, hand sprayer, and mounting hardware
• For OLDER 510, 511, and other older Dometic toilets — NOT for 500+ generation
• Extension tube provides extra clearance for tight installations
• Wide compatibility: 100, 200, 500H, 510, 511, 700-4000 Series + specific 300/310/320/321/500 Series models
• Compatible with Dometic, Sealand, VacuFlush, and Traveler toilet systems
• White finish
• Stops backflow — critical fresh water safety protection
• Made in the USA
• Weight: 2 lbs

What's Included

• (1) Vacuum breaker with extension tube
• (1) Hand sprayer
• Mounting fasteners and hardware

Specifications

• Brand: Dometic
• Part Number: 385319055
• Type: Vacuum Breaker (with Extension) + Hand Sprayer Kit
• Application: Adding hand sprayer functionality to older compatible Dometic toilets
• Compatible Brands: Dometic, Sealand, VacuFlush, Traveler
• Compatible Series (older): 100, 200, 500H, 510, 511, 700, 800, 900, 1000, 2000, 3000, 4000
• Compatible Specific Models: 300 Series Weekender (9108765630/DOM84FR), 310 Series Part-Timer (9108923943/DOM97FR, 9108923944/DOM47FR), 320 Series Full-Timer (9108781899/DOM39FR, 9108781898/DOM59FR), 321 Series Full-Timer (9108782781/DOM49FR), 500 Series Full-Timer (9108553010/DOM29FR)
• NOT Compatible With: Sealand 500+, 510+, 511+ (Plus generation)
• Vacuum Breaker Cross-Reference: Includes 385230325 vacuum breaker
• Color: White
• Country of Origin: Made in USA
• Weight: 2 lbs