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Adjustable Pressure Switch 50 psi EFI - Normally Open

Brand NOS Reference 15685NOS

Adjustable NOS pressure switch for monitoring the fuel pressure of a nitrous system and cutting the supply if pressure is insufficient. Normally open contact.

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Available from the manufacturer 6 in stock at factory
Expected delivery to you on Nov 13, 2026
This lead time is an estimate and may change due to circumstances beyond our control

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Adjustable NOS pressure switch for monitoring the fuel pressure of a nitrous system and cutting the supply if pressure is insufficient. Normally open contact.

50 psi adjustable pressure switch (normally ope PI). You do not want to inject nitrous into the engine if fuel pressure is below what is needed to supply the extra fuel required.

Key features

  • Heavy-Duty Specialty Switch
  • Controls Fuel Pressure

Technical specifications

  • Brand: NOS (Nitrous Oxide System PI)
  • Manufacturer part number: 15685NOS
  • Normal position: Open
  • Maximum load: 8 A
  • Maximum pressure: 50 psi (3.45 ba PI)
  • Set pressure: 50 psi (3.45 ba PI)
  • Adjustable: Yes
  • Inlet thread: 1/8 NPT

Good to know

  • Call the NOS Tech Line for additional info in selecting what's best for your application.

Important: this product runs on nitrous oxide (N2 PI), a gas we do not supply and which is currently difficult to obtain. It is your responsibility to find a local supplier of gas for professionals. NOS bottles do not comply with CE standards (they do not carry the PI mark): only CE-approved bottles may be used. European manufacturers offer bottles approved to contain this gas; please check the applicable standards and verify the manufacturer's origin and compliance before purchasing. NOS fittings are not metric (AN / NPT threads depending on the part numbe PI): plan for the adapters needed for your installation. Please comply with the regulations in force in your country.

Product family: Engine
Engine Engine Sensors
Produit mis à jour le: 2026-10-23 15:38:12