Split Steel Couplings & Fittings
Ironhed FMP couplings and fittings complete the split steel conduit system with direction changes, size transitions, conduit connections, and sealed assemblies—all manufactured in the same split two-piece design as the straight sections. Every FMP fitting installs around live utilities without service interruption. Galloway stocks FMP bends, rotator couplers, and gasketing kits from Ironhed.
Features
The options below are how you spec a fitting — standard angles and the part-numbering that identifies an exact bend, with custom radii, larger sizes, and gasketed versions for anything the standard range doesn't cover.
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All fittings maintain the split two-piece FMP design
Install around occupied conduit without pulling cables
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FMP Bends available in standard angles
15°, 22.5°, 30°, 45°, 60°, and 90° in all standard sizes
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Custom radius bends
Engineered for specific project routing requirements
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Rotator Couplers (12" and 15" lengths)
Re-round and join oval or misshapen HDPE innerduct—especially effective in handholes and tight spaces
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Gasketing kits available for all FMP sizes
Seal along all flanges and butt seams for waterproofing or secondary containment
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Larger sizes up to 60" available
Gasketed versions available for sealed systems
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Systematic part numbering:
S(Size) x (Degree) x (Radius) / (Gauge)—e.g., S4x90x36/10 for a 4", 90°, 36" radius bend in 10-gauge
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Custom engineering available:
Oversized casing to 144", four-piece assemblies for 42"+ diameters, lifting eyes, powder coating
Hardware Reference
All FMP sections, bends, and couplers ship with appropriate hardware included:
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Wall Thickness |
Hardware Size |
Type |
Max Torque |
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0.074"–0.137" |
5/16" x 1" to 1.25" |
Gr. 5 zinc flange bolt & nut |
13 ft-lbs |
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0.237"–0.312" |
3/8" x 2.5" |
Gr. 5 zinc flange bolt & nut |
23 ft-lbs |
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0.375"–0.500" |
1/2" x 2.5" |
Gr. 5 zinc flange bolt & nut |
57 ft-lbs |
Upgraded hardware available on request: hot-dip galvanized, stainless steel, and Grade 8 yellow zinc.
Rotator Coupler Specifications
- Standard wall: 10-gauge galvanized
- Each coupling includes stainless steel fasteners
- Available in all standard FMP conduit sizes
- 12-inch and 15-inch coupling lengths
Gasketing System
All FMP sizes—including rotator couplers—are available with a separate gasketing kit that seals along all flanges and butt seams. The gasketing system provides fluid barrier protection against water, soil, and debris, and converts FMP into sealed secondary containment for industrial applications involving fuel, chemical, or pressurized lines—eliminating the expense and liability of welding near live utilities.
You may also need
Split Steel Conduit — FMP
Ironhed's two-piece split steel casing — the straight-run system these bends, couplers, and gasket kits complete.
Steel Pipe & Fittings
Solid steel casing pipe — for the new bored or jacked crossings on the same utility-protection project.
Brands we carry
Need FMP Fittings for your next build?
We stock the complete FMP system—straight sections, bends, couplers, and gasketing kits. For complex projects involving custom radii, oversized casing, or specific loading calculations, we coordinate directly with Ironhed to your project timeline. Tell us your conduit sizes, bend angles, and application—we'll match you with the right fittings.
Not sure exactly what you need? Call and let’s talk about what you’re building — we’ll help work it out.