We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Donaldson P112803 Vacuator Valve, black rubber valve assembly

Donaldson

Donaldson P112803 Vacuator Valve

SKU CH-RSZJ-HT5YY

Automotive vacuator valve for heating, ventilation and air conditioning systems

  • Automatically ejects moisture to protect air-system components
  • Genuine Donaldson manufacture ensures exact fit for HVAC applications
  • Simple valve design allows quick inspection and replacement
  • First listed by manufacturer in February 2022
  • Direct-from-manufacturer supply chain reduces handling steps

HVAC Vacuator Valve

The Donaldson P112803 Vacuator Valve is a heating, ventilation and air-conditioning component built for RV systems. It provides a direct-fit replacement for original equipment and installs without modification. The part is supplied new and ships directly from the manufacturer.

Sustained moisture evacuation

Under continuous operation the valve expels accumulated moisture from the HVAC ducting, preventing water build-up during long trips or humid conditions. Its mechanical design maintains consistent flow without electrical power or moving parts that can fatigue. The valve continues to function as long as the system generates condensate.

Upgrade from clogged or missing valves

This valve replaces a factory unit that has become blocked, cracked or lost, restoring proper drainage and protecting downstream components from water damage. The improvement is worthwhile whenever the original drain fails to clear condensate, which can lead to odours, mould or reduced airflow. Buyers who need a different thread size or a heated drain assembly will not be served by this part.

Highlights

  • Automatically ejects moisture to protect air-system components
  • Genuine Donaldson manufacture ensures exact fit for HVAC applications
  • Simple valve design allows quick inspection and replacement
  • First listed by manufacturer in February 2022
  • Direct-from-manufacturer supply chain reduces handling steps

Specifications

BrandDONALDSON

Questions about this item

How much operating noise or heat does the Donaldson P112803 Vacuator Valve produce during continuous use?

The Donaldson P112803 Vacuator Valve is a passive component with no moving parts or power draw, so it generates no noise or heat while the HVAC system runs all day.

What existing fittings or hose sizes are required to install the Donaldson P112803 Vacuator Valve?

The valve is designed to integrate with standard RV HVAC ducting and drain connections; match the inlet and outlet ports to your current duct diameter for a direct fit.

Will the Donaldson P112803 Vacuator Valve work with an older RV air-conditioning unit manufactured before 2022?

Yes, the valve operates on simple vacuum principles and fits the same duct interfaces used on legacy RV air-conditioning systems, so it functions alongside older hardware without modification.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.