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The N-H420 CNG regulator is a high pressure regulator with for use with up to 275 HP engines.   This regulator is equipped with a silicone secondary diaphragm. This model provides adjustable positive pressure output with tamper proof cap.  


Model Specific: N-H420-PVA & N-H420-PVA+

  • @ 1.5 CFM, Output Pressure of PVA: +0.4" H2O
  • @ 1.5 CFM, Output Pressure of PVA+: +3" to 13" H2O

H420 Natural Gas Regulator, Adjustable Positive Pressure, Tamper Proof

  • Most Items come with warranty of 1 year from date of shipment. Please contact Customer Service to determine the eligibility for this specific part for refund or return. (

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