Nitrous Purge Kits

MPS Nitrous Purge KitNitrous pressure should be kept consistent to obtain optimum performance. All Nitrous systems are designed to work best with a bottle pressure of 900-950 psi. Pressure is determined by the amount of nitrous contained in the bottle and temperature. The chart below shows what happens to nitrous at various temperatures. Accordingly, it's a good idea to use an NOS or ARC bottle heater. Likewise, maintaining consistent line filling is important...which is why most racers use a purge valve to release nitrous vapor from the feed line. This provides liquid nitrous to the inlet of the solenoid(s) for better consistency and repeatability.

Purge Valves - Control System Pressure For Optimum Power! NOS Pressure Chart
The primary purpose of a purge valve is to release trapped air or gaseous nitrous from feed line(s). It helps to ensure consistent performances and it looks cool also. You've probably seen the Import or Pro Mod guys do it. Includes all required components.

NOS Ntimidator LED Purge Kit Features:NOS LED Purge Light

             NOS Purge Kit

TECH NOTE: The lower the ambient temperature, the lower the resultant bottle pressure leading to a potential fuel rich condition. Although usually not harmful to the engine, loss of optimal power can occur. On the other hand, very high ambient temperatures can lead to leaner burning conditions and loss of optimal performance as well as possible damage to engine components. Nitrous gauges are an excellent way to monitor problems before they can occur.

Part Number

Description Racer Price


 MPS -4 Purge Kit With Teflon Seals



 NOS -4 Purge Valve Assembly



 NOS Ntimidator LED Purge Kit



 NOS Blue LED Light Only