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The MIDLAND INDUSTRIES CDC-400-B1 is a Type DC brass dust cap designed to protect 4-inch female cam and groove couplings from contamination during storage and transport. Built for demanding fluid-transfer applications, this fitting features an NBR gasket and a solid brass body rated to 150 psi at 70 degrees F. The casting is rated for temperatures from -150 to 450 degrees F, while the gasket handles a range of -40 to 212 degrees F. It is commonly installed by plumbers, industrial maintenance technicians, and fluid-handling specialists working with cam and groove hose assemblies.
This dust cap is suited for use in industrial, agricultural, and commercial fluid-transfer systems where cam and groove couplings require a secure, contamination-free closure when not in service. The 4-inch female cam connection fits standard Type DC cam and groove fittings, making it a practical choice for tank trucks, chemical transfer lines, petroleum handling, and similar applications requiring a brass fitting with reliable sealing performance.
Designed as an OEM-style replacement dust cap for 4-inch female cam and groove couplings conforming to Type DC cam and groove fitting standards.
This dust cap is installed and removed by hand without tools, snapping onto a compatible 4-inch female cam and groove coupling. Before servicing any hose or coupling assembly, depressurize the line and confirm all flow has been stopped. Verify that the NBR gasket is seated properly and free of damage before placing the cap into service. Installation should comply with applicable industry standards and site safety procedures for the fluid being handled.
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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