Midland Industries HNV38M Iso-b Quick Disconnect Pipe Plug

Product Description

The MIDLAND INDUSTRIES HNV38M is a steel ISO-B interchange quick disconnect pipe plug designed for hydraulic circuit applications. The plug features a 3/8-inch body size with a 3/8-18 female NPT connection on the inlet side and conforms to the ISO-B interchange standard, making it a reliable choice for closing off hydraulic lines during maintenance or equipment changeover. Rated to 4000 psi maximum operating pressure and capable of handling temperatures from -40 to 250 degrees F, this plug is built to perform in demanding industrial and mobile hydraulic systems. Installation is handled by hydraulic technicians and fluid power specialists.

This plug is suited for use in residential, commercial, and industrial hydraulic systems where ISO-B interchange quick disconnect fittings are the specified standard. Typical applications include mobile equipment, agricultural machinery, construction equipment, and industrial hydraulic power units. It is used to seal a quick disconnect coupler body when the mating half is disconnected, preventing fluid loss and contamination entry. The female NPT thread provides a straightforward connection to standard pipe-threaded ports and manifolds.

Key Features

• ISO-B interchange design for broad compatibility with ISO-B series quick disconnect couplers
• Rated to 4000 psi maximum operating pressure for high-demand hydraulic circuits
• Operating temperature range of -40 to 250 degrees F suits a wide range of hydraulic fluids and environments
• 3/8-18 female NPT thread for direct connection to standard pipe-threaded ports
• Steel construction provides durability and resistance to mechanical stress in industrial service
• 3/8-inch body size fits standard ISO-B series coupler bodies

Compatibility

Designed as an OEM-style replacement or service plug for hydraulic systems using ISO-B interchange quick disconnect fittings with 3/8-inch body size and 3/8-inch female NPT ported connections.

Installation Notes

Installation should be performed by a qualified hydraulic technician or fluid power specialist. Depressurize and lock out the hydraulic system completely before removing or installing any quick disconnect fitting or plug. Apply appropriate thread sealant to the NPT threads per the system fluid compatibility requirements. Inspect the plug seating surface and threads for damage before installation to ensure a leak-free seal at rated pressure.