
Connectors & adaptors
Connectors and adaptors form the interface between tubing runs and threaded equipment, valves, instruments, or bulkhead penetrations. Built on a two-ferrule compression design, each connector uses a body, front ferrule, back ferrule and nut to grip the tube outer diameter and form a leak-tight, metal-to-metal seal without requiring the tube to be flared. The range covers male and female threaded connections (NPT/BSP), reducing adaptors for joining different tube sizes, bulkhead connectors for panel-to-panel or compartment penetrations, and tube-to-thread adaptors for direct connection to ported equipment. This modular approach allows a single fitting family to cover the majority of transition points found in instrumentation, process, and utility tubing systems.
Description
Connectors and adaptors form the interface between tubing runs and threaded equipment, valves, instruments, or bulkhead penetrations. Built on a two-ferrule compression design, each connector uses a body, front ferrule, back ferrule and nut to grip the tube outer diameter and form a leak-tight, metal-to-metal seal without requiring the tube to be flared. The range covers male and female threaded connections (NPT/BSP), reducing adaptors for joining different tube sizes, bulkhead connectors for panel-to-panel or compartment penetrations, and tube-to-thread adaptors for direct connection to ported equipment. This modular approach allows a single fitting family to cover the majority of transition points found in instrumentation, process, and utility tubing systems.
Features
Two-ferrule compression design for reliable, leak-tight sealing
No tube flaring required prior to installation
Male and female NPT/BSP thread options for direct equipment connection
Reducing adaptors for joining different tube sizes within the same line
Bulkhead connectors for sealed panel and compartment penetrations
Tube-to-thread adaptors for direct interface with ported equipment
Tool-free disassembly and remake without loss of sealing integrity
Wide size range from 1/16" to 2" tube OD
Corrosion-resistant 316 stainless steel construction
Heat-code traceable material certification available
Specifications
| Product Type | Connectors & Adaptors (Two-Ferrule Compression Design) |
| Range Covered | Male Connector, Female Connector, Reducing Adaptor, Bulkhead Connector, Tube-to-Thread Adaptor |
| Construction | Body, front ferrule, back ferrule and nut |
| Material | Stainless Steel 316 (SS316) |
| Tube OD Range | 1/16" to 2" (imperial); metric equivalents available |
| Thread Range | 1/16" to 2" NPT male/female (BSP available on request) |
| Sealing Method | Metal-to-metal, two-ferrule compression seal (no flaring required) |
| Applicable Standards | ASTM A276 / ASTM A479 / ASME SA479 (bar stock), ASTM A182 / ASME SA182 (forged fittings) |
| Reference Series | FCF/MC (Male Connector NPT, Imperial) |
Technical Specifications
| Part No. | OD (in) | P1 NPTM | A (in) | OD1 (Tube, in) | H (mm) | F Hex | L (in) |
|---|---|---|---|---|---|---|---|
| FCF/MC/1I-1T | 0.05 | 1/16 | 0.34 | 1/16 | 20.00 | 5/16 | 0.94 |
| 0.60 | 1/4 | 9/16 | 1/4 | 30.48 | FCF/MC/4I-4T | 1.49 | 0.19 |
| 0.41 | 38.86 | FCF/MC/8I-8T | 1/2 | 1.93 | 1/2 | 7/8 | 0.90 |
Applications
Available Configurations
Male Connector
Joins tubing to a male-threaded (NPT/BSP) port on valves, instruments, or equipment.
Female Connector
Joins tubing to a female-threaded (NPT/BSP) port.
Reducing Adaptor
Connects two tube sizes of different outer diameters.
Bulkhead Connector
Passes tubing through a panel, bulkhead, or compartment wall.
Tube-to-Thread Adaptor
Provides a direct transition between tubing and a threaded port.
Benefits
Typical System Components

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