Midland Industries DD-3040-A Cam Groove Spool Coupler

Product Description

The MIDLAND INDUSTRIES DD-3040-A is a Type DD cam and groove spool coupler designed to connect two female coupler ends in aluminum construction. This fitting joins a 3-inch female coupler on one end to a 4-inch female coupler on the other, making it a reducing spool adapter for hose and fluid transfer systems. It handles a maximum operating pressure of 150 psi and is rated for casting temperatures from -150 to 250 degrees F. The included NBR gasket is rated for fluid contact between -40 and 212 degrees F. This fitting is installed by plumbers, pipefitters, and industrial maintenance technicians in liquid transfer and process piping applications.

The DD-3040-A is suited for industrial hose assemblies, tank truck connections, agriculture irrigation lines, and general fluid transfer setups where a female-to-female cam and groove spool is required. The reducing configuration accommodates transitions between 3-inch and 4-inch hose or pipe connections within the same cam and groove system. Its aluminum body keeps weight manageable while maintaining structural integrity under typical operating pressures found in these applications.

Key Features

• Type DD cam and groove spool coupler with female connections on both ends
• Reducing design: 3-inch female coupler to 4-inch female coupler
• Maximum operating pressure of 150 psi
• Aluminum body rated for casting temperatures from -150 to 250 degrees F
• NBR gasket rated for fluid contact from -40 to 212 degrees F
• Cam and groove quick-connect design for fast hose coupling and decoupling

Compatibility

Designed as an OEM-style replacement or direct-fit component for Type DD aluminum cam and groove hose coupling systems using 3-inch and 4-inch female coupler connections.

Installation Notes

Installation is performed by qualified pipefitters, plumbers, or industrial maintenance technicians. Verify system pressure does not exceed the 150 psi maximum operating pressure rating before putting the fitting into service. Ensure the NBR gasket is properly seated before engaging the cam arms, and confirm that fluid temperature at the gasket contact point stays within the -40 to 212 degrees F rating. Depressurize and drain the line fully before disconnecting or servicing cam and groove fittings.