ALEX® Rigid to Flexible Transition Coupling (Threaded)
(Spanish Reference: CONECTOR FLEXIBLE METÁLICO A TUBERÍA RMC CON HILO)
Product Definition
The ALEX® Rigid to Flexible Transition Coupling is a specialized industrial fitting designed to create a secure, vibration-proof bridge between Rigid Metal Conduit (RMC) and Flexible Metal Conduit.
Manufactured from high-strength zinc-plated steel, this connector features a dual-interface design: a threaded male hub that screws firmly into RMC, and a compression nut that grips the flexible conduit. This ensures a seamless transition for wiring systems in dynamic environments, such as motor connections, where vibration isolation is critical.
Key Features & Benefits
Secure Transition: Provides a fail-safe mechanical bond between static Rigid conduits and dynamic Flexible conduits without the need for a junction box.
Vibration Resistance: The compression nut mechanism tightens against an internal sealing ring, preventing loosening caused by industrial machinery vibration.
Grounding Continuity: Engineered to maintain a reliable electrical grounding path across the transition, ensuring system safety.
Corrosion Protection: The zinc-plated finish offers excellent resistance to rust and harsh industrial elements.
Technical Specifications & Size Chart
Metric Size (mm)
Material
Connection Type A
Connection Type B
20 mm
Zinc-Plated Steel
RMC Threaded Hub
Flex Compression Nut
25 mm
Zinc-Plated Steel
RMC Threaded Hub
Flex Compression Nut
32 mm
Zinc-Plated Steel
RMC Threaded Hub
Flex Compression Nut
40 mm
Zinc-Plated Steel
RMC Threaded Hub
Flex Compression Nut
50 mm
Zinc-Plated Steel
RMC Threaded Hub
Flex Compression Nut
63 mm
Zinc-Plated Steel
RMC Threaded Hub
Flex Compression Nut
75 mm
Zinc-Plated Steel
RMC Threaded Hub
Flex Compression Nut
90 mm
Zinc-Plated Steel
RMC Threaded Hub
Flex Compression Nut
110 mm
Zinc-Plated Steel
RMC Threaded Hub
Flex Compression Nut
Applications
Motor Connections: Ideal for transitioning from overhead rigid pipes to flexible drops feeding motors or pumps.
Control Cabinets: Creating secure entry/exit points for wiring in machinery.
Expansion Joints: Bridging gaps where slight movement or thermal expansion occurs between equipment.
Frequently Asked Questions (FAQ)
Q: Why use this coupling instead of a box?
A: This coupling allows for a direct, inline transition from Rigid to Flexible conduit. It saves space and installation time by eliminating the need to mount a junction box just to change conduit types.
Q: Does it include a sealing ring?
A: Yes. The flexible side is equipped with an internal sealing ring that compresses upon tightening, providing an airtight grip that prevents dust and moisture ingress.
Q: Is this compatible with EMT?
A: This specific model is designed for Rigid Metal Conduit (RMC) which has threaded ends.1 For EMT (unthreaded) transitions, please refer to our EMT to Flex Combination Couplings.
Q: Do you offer OEM services?
A: Yes. We support OEM production, private labeling, and custom packaging for distributors and project suppliers.
Q: What is the lead time?
A: Our standard lead time is approximately 4 weeks. We recommend confirming specific delivery schedules with our sales team before placing large orders.
