PROMETH 4AN CHECK VALVE (NPT AN)

PROMETH 4AN CHECK VALVE (NPT-AN)

One-way check valve for water/methanol injection systems — prevents backflow into the pump/reservoir

This billet stainless steel check valve is designed for water-methanol injection setups, ensuring fluid flows in one direction only — toward the injection nozzle — and preventing backflow or siphoning back into the tank when the system is off or under boost pressure fluctuation.

Specs:

• Fitting: 1/8" NPT (male) to 4AN (male)
• Material: Stainless steel / nickel-plated brass fitting body
• Application: Water/methanol injection, nitrous purge lines, boost reference lines
• Cracking pressure: low-pressure opening (typical for WMI applications — confirm exact PSI spec if listing requires it)
• Prevents fluid backflow and vapor lock in injection lines