Parker 222P-4-MI12 Brass Iso Port Adapter Nptf M12

Product Description

The PARKER 222P-4-MI12 is a brass ISO port adapter designed to connect NPTF-threaded fittings to M12x1.5 metric ports in hydraulic and fluid-power systems. It bridges imperial pipe threads to ISO metric port configurations, allowing technicians to integrate standard NPTF components into metric-ported equipment. The adapter is rated to 1,000 psi working pressure and operates across a wide temperature range, from -65 degrees F to elevated service temperatures typical of hydraulic circuits. A Viton seal is incorporated to provide chemical and heat resistance appropriate for hydraulic fluid, fuel, and related media. Licensed plumbers, pipefitters, and hydraulic system technicians are the primary installers.

This adapter is used in industrial hydraulic systems, mobile equipment, and fluid-power assemblies where NPTF pipe connections must mate with ISO 6149-3 metric ports. It is well-suited for equipment panels, manifold blocks, cylinders, and pumps that carry metric port bosses but require NPTF-threaded accessories or instrumentation. The 1/4-18 NPTF thread size fits standard quarter-inch pipe fittings, making it a common transition piece during system builds, retrofits, or repairs where mixed thread standards are encountered.

Key Features

• Brass construction provides corrosion resistance suitable for hydraulic, water, and fuel service
• 1,000 psi maximum working pressure rating for hydraulic circuit use
• M12x1.5 metric thread mates with ISO 6149-3 and SAE J2244-3 compliant ports
• 1/4-18 NPTF pipe thread on the opposite end for secure, pressure-tight imperial connections
• Viton seal material offers broad chemical compatibility and heat resistance
• Rated to -65 degrees F minimum operating temperature for cold-climate applications

Compatibility

Designed for use with ISO 6149-3 and SAE J2244-3 compliant metric port bosses. Accepts standard 1/4-18 NPTF pipe fittings on the imperial end. Confirm port thread form and boss geometry on the target equipment before installation.

Installation Notes

Installation is typically performed by licensed pipefitters or hydraulic system technicians. Depressurize and isolate the hydraulic or fluid circuit completely before removing or installing any adapter. Use thread sealant appropriate for the service fluid on the NPTF side; the ISO metric side relies on the Viton seal and machined port face for sealing, so do not apply sealant to the metric threads. Verify that port boss condition meets ISO 6149-3 surface finish requirements to ensure a proper seal.