One-Way Check Valve for Air Compressor (Cast Iron)

This is a specific Cast Iron Check Valve designed for use as an accessory within an air compressor system, primarily to prevent compressed air from flowing back into the compressor head when the unit is off or unloading.

Key Specifications

Parameter	Detail
Valve Type	One-Way Check Valve
Function	Air Compressor Accessory; Prevents backflow of compressed air.
Material	Cast Iron
Number of Ports	2 (Inlet and Outlet)
Inlet Connection	Threaded
Outlet Connection	PEX (Designed for PEX tubing connection)
Drive Mode	Pneumatic (Flow-operated)
Specific Application	For Z-0.036 exhaust pipe of air compressors.
Valve Hole Specification	Approx. 21 x 16 x 10mm / 0.8 x 0.6 x 0.4in

Function and Application

This check valve is a critical component in the air compressor’s discharge line.

Prevents Backflow: It ensures that compressed air, after passing through the valve into the storage tank, cannot flow back into the compressor head. This is essential for:
- Protecting the compressor head from sustained pressure when the motor is stopped.
- Allowing the pressure switch to effectively bleed (un-load) the pressure line before the next start-up.
Durable Material: The cast iron construction provides strength and durability for the typical pressures and temperatures encountered in compressed air systems.
Connection Specificity: The inclusion of a PEX outlet connection shows this valve is intended for specific air dryer or distribution systems utilizing flexible PEX tubing, which is commonly found in certain automotive or lower-pressure industrial air networks.