Craftsman E104734 Air Compressor Bleed Valve Kit

Product Overview:

A compressor check valve creates a one-way airflow path that allows compressed air to move toward the storage tank while restricting reverse flow toward the pump. The Craftsman E104734 Air Compressor Check Valve is an OEM part that supports pressure retention by maintaining the intended direction of airflow between connected compressor components.

Compressed Air Flow Control:

The check valve controls the direction of compressed air between the compressor pump and storage tank. It allows air to move toward the tank while restricting reverse flow toward the pump after compression, separating the pumping circuit from the pressurized storage side.

Pressure Retention:

The check valve helps retain stored tank pressure by restricting compressed air from flowing back toward the pump after the compressor stops building pressure.

Replacement Guidelines:

Replacement of the Craftsman E104734 Air Compressor Check Valve may be appropriate when the valve permits reverse airflow, allows tank pressure to escape through the pump circuit after shutdown, or is otherwise identified as defective. Verify part number E104734 and the complete compressor model against applicable manufacturer parts documentation before purchasing.

Common Signs of Wear:

• Compressed air leaking after the compressor shuts off.
• Loss of stored tank pressure.
• Compressor starting difficulties caused by pressure remaining against the pump.
• Pressure-related operating issues caused by reverse airflow through the check valve.

Equipment Compatibility:

The Craftsman E104734 Air Compressor Check Valve is documented for Craftsman air compressor model 921152150. Before purchasing, verify part number E104734, the complete compressor model, and applicable manufacturer parts documentation. Compatibility should not be assumed based solely on a similar compressor model or visually similar check valve.

• What does the Craftsman E104734 Air Compressor Check Valve do?

  The Craftsman E104734 Air Compressor Check Valve allows compressed air to flow toward the storage tank while restricting reverse airflow toward the pump, helping retain tank pressure after compression.

• Why does an air compressor lose tank pressure after shutting off?

  A defective check valve may allow compressed air to escape back through the pump circuit, causing stored pressure to drop after the compressor stops.

• Can a faulty check valve make an air compressor difficult to restart?

  Yes. If reverse airflow leaves pressure against the pump, the compressor may experience starting difficulties. A defective check valve is one possible cause of this symptom.

• Which Craftsman air compressor model uses check valve E104734?

  The Craftsman E104734 Air Compressor Check Valve is documented for model 921152150. Verify the complete compressor model and part number against manufacturer parts documentation before ordering.

• When should the E104734 check valve be replaced?

  Consider replacement if the valve permits reverse airflow, contributes to pressure loss after shutdown, or is confirmed defective. This is identified as an OEM Craftsman part.