Parker VSTI3/8EDCF Hollow Hex Plug 3/8 in Mbspp Steel

Product Description

The PARKER VSTI3/8EDCF is a hollow hex plug designed to seal hydraulic and instrumentation tube fittings in high-pressure fluid systems. It accepts a 3/8 inch MBSPP (Male British Standard Pipe Parallel) thread and is machined from steel for durability under demanding service conditions. Rated to 9,137 psi maximum working pressure, it is suited for use in hydraulic power units, industrial machinery, and instrumentation lines. Licensed plumbers, pipefitters, and hydraulic technicians install this plug to cap off unused ports or temporarily block flow during system maintenance or assembly.

This plug is used in industrial pipe and tube fitting assemblies that conform to DIN ISO 8434 standards. It is well suited for high-pressure hydraulic circuits, fluid power equipment, and industrial instrumentation systems operating across a wide temperature range. The MBSPP thread classification makes it compatible with British Standard parallel pipe thread port connections commonly found in European and internationally sourced hydraulic components and manifolds.

Key Features

• Maximum working pressure of 9,137 psi for high-pressure hydraulic and fluid power service
• 3/8 inch MBSPP male thread for compatibility with British Standard parallel pipe port connections
• Steel construction provides strength and resistance to deformation under pressure
• Rated for temperatures from -40 degrees F to 250 degrees F
• Conforms to DIN ISO 8434 standards
• Hollow hex drive allows installation with standard hex key tooling

Compatibility

Designed as an OEM-style replacement hollow hex plug for industrial hydraulic and fluid power systems using MBSPP-threaded port connections conforming to DIN ISO 8434.

Installation Notes

Installation is typically performed by licensed pipefitters, hydraulic technicians, or millwrights using a standard hex key or Allen wrench. Always depressurize and isolate the hydraulic circuit completely before removing or installing any port plug. Verify thread form and size against the port specification before installation to prevent cross-threading or leaks. Follow applicable industry and facility standards for hydraulic system service.