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The MIDLAND INDUSTRIES DA-4030-SS is a Type DA cam and groove reducer coupler designed for quick-connect hose and fitting assemblies in fluid transfer applications. It connects a 4-inch female coupler to a 3-inch male adapter, allowing a direct size reduction in a single fitting. Constructed from 316 stainless steel, it handles a maximum operating pressure of 150 psi and a casting temperature range of -150 to 500 degrees F. The included NBR gasket extends the service temperature range from -40 to 212 degrees F. Licensed plumbers, pipefitters, and fluid-transfer technicians install this fitting in industrial, agricultural, and process piping systems.
This reducer coupler is suited for liquid and compatible fluid transfer lines where a quick-disconnect interface is required between mismatched hose or pipe sizes. The 316 stainless steel body resists corrosion in wet, chemical-exposed, and outdoor service environments. Applications include tank truck loading and unloading, irrigation systems, chemical transfer lines, and general industrial fluid handling where cam and groove connections are the standard. The fitting is compatible with standard cam and groove hose assemblies and adapters following common industry dimensional standards.
Designed as an OEM-style replacement or direct-install fitting for standard cam and groove hose assemblies requiring a 4-inch female coupler to 3-inch male adapter reducer connection.
Installation is typically performed by licensed pipefitters, plumbers, or qualified fluid-transfer technicians. Verify that the system is fully depressurized and drained before disconnecting or replacing any cam and groove fitting. Inspect the NBR gasket for wear or chemical incompatibility before placing the fitting into service. Ensure all cam arms are fully engaged and locked before resuming system pressure.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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