Engineered Controls Vapor Relief Valve 1/4″ M NPT 18 PSI Brass LP Gas Propane

Overview

Upgrade safety and compliance in your propane, LP, or natural gas systems with the Engineered Controls 3139 Series Vapor Relief Valve.Designed for first-stage regulators in accordance with NFPA 58 2.5.7.5 requirements, this valve features a pop-action design that minimizes product loss while ensuring reliable overpressure protection.Perfect for installations downstream from 1580 Series regulators, this relief valve is rated at 18 PSIG set pressure with a start-to-discharge setting of 18 and a regulator setting of 10 PSIG. The 1/4″ M NPT connection makes it ideal for integration into a variety of industrial gas systems.Key Benefits:Compliance Ready – Meets NFPA 58 requirements for first-stage regulator relief valves.Durable Construction – Brass body with seat disc assembly ensures long service life.Efficient Flow – Install with a tee downstream from the regulator outlet for maximum relief flow.Versatile Use – Works with propane (LP) and natural gas vapor systems.

Specifications

Set Pressure: 18 PSIGConnection: 1/4″ M NPTMaterial: BrassBrand: Engineered ControlsModel: 3139-18Compatible Gases: LP Gas, Natural GasWhether you’re maintaining bulk storage, transfer stations, or other industrial gas operations, this valve ensures safety, reliability, and performance.

Product details

Part / SKU	3139-18

Package includes

• Engineered Controls Vapor Relief Valve 1/4" M NPT 18 PSI Brass LP Gas Propane

Included components and any stated pack quantity are as described in this listing. Optional accessories shown separately are sold separately unless expressly included above.