Wear-Resistant Elbows for Pneumatic Conveying
Solve wear, streamers/angel hair, and plugging at the bend. Our primary solution is the HammerTek® Smart Elbow® deflection elbow, with Ni-Hard elbows available as a lower-cost alternative for select applications.
HammerTek® Smart Elbow® — How It Works
Instead of slamming pellets into the outside radius, Smart Elbow® creates a rotating ball of material in a spherical pocket that gently deflects the stream around the turn—eliminating impact with the elbow wall.
Deflection, Not Impact
The spherical chamber lets a material “ball” rotate with the airstream, so incoming particles cushion against material—not metal. This prevents elbow wear and material damage.
Stops Streamers & Angel Hair
Eliminates frictional heating from pellet skidding—reducing fines, streamers, and angel hair that foul downstream equipment and degrade product.
Cast for Your Duty
45° and 90° elbows offered in cast iron, carbon steel, aluminum, stainless, and specialized alloys, with flanged or socket-weld ends in tube and Sch.10/80 sizes (≈1¼″–18″).
Flow Path Visualization
The Smart Elbow® design creates a rotating material pocket inside the bend that redirects flow without direct impact on the elbow wall. This unique deflection action reduces wear, prevents plugging, and eliminates streamers or angel hair in plastic pellets.
- Less Wear: Avoids abrasive impact against the outer radius.
- Cleaner Product: Minimizes fines, streamers, and heat-related defects.
- Lower Maintenance: Longer elbow life than sweeps or standard impact elbows.
Ni-Hard Elbows — Budget Wear Option
Abrasion-resistant cast iron elbows for pneumatic lines where initial cost is critical. Ni-Hard provides improved wear life over thin-wall sweep elbows, but may not prevent fines/streamers on plastic pellets like a deflection elbow.
Common Sizes & Geometries
Offered in 45°/90° bends and multiple diameters. Heavier sections yield longer wear vs. standard sweeps in abrasive service.
Applications
Minerals, sand, and abrasive powders where impact at the outer radius drives wear. Often used as a cost-sensitive retrofit.
Considerations
Ni-Hard resists wear but does not address frictional heating—so streamers/angel hair on plastic pellets may persist compared to a Smart Elbow®.
Which Elbow is Right for Your Line?
| Feature | HammerTek® Smart Elbow® | Ni-Hard Elbow |
|---|---|---|
| Wear Mechanism at Bend | Deflects with rotating material pocket; avoids wall impact. | Direct impact on outer radius; relies on hard iron thickness. |
| Fines / Streamers / Angel Hair (Plastics) | Greatly reduced by minimizing frictional heating at radius. | May persist due to pellet skidding/heat at radius. |
| Plugging / Build-up | Reduced – less surface impact/heat for sticky products. | Possible – impact and friction can promote build-up. |
| Alloys & Sizes | Cast iron, CS, Al, SS, specialized alloys; 45°/90°; tube & Sch.10/80; ~1¼″–18″. | Cast Ni-Hard iron; common 45°/90°; standard pneumatic sizes. |
| Capex vs Lifecycle Cost | Higher capex; lower lifecycle (less wear, quality losses, downtime). | Lower capex; lifecycle varies with abrasiveness & pellet behavior. |
Wear-Resistant Elbow FAQ
Can Smart Elbow® handle abrasive products like glass-filled resins?
Yes. By eliminating wall impact, Smart Elbow® dramatically reduces wear. With HammerLoy™ HL alloy (≈500–555 BHN), it’s suitable for abrasives up to ~8–9 Mohs within typical temperature limits.
Will Smart Elbow® stop streamers/angel hair on plastic pellets?
Yes, the deflection design minimizes frictional heating at the outer radius, significantly reducing fines, streamers, and angel hair versus conventional impact elbows.
When does Ni-Hard make sense?
If budget is the primary constraint and the product is mostly abrasive minerals (not heat-sensitive plastics), Ni-Hard can extend service life over standard sweeps. For plastics quality issues (streamers) or plugging, Smart Elbow® is usually the better value.
Need help sizing elbows for your conveying line?
Share your material, conveying rate/velocity, temperature, line size/schedule, and bend count. We’ll recommend the right deflection elbows or Ni-Hard alternatives to minimize wear, fines, and downtime.
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