LiftMaster 50103 Soft Rubber Air Hose for Pneumatic Sensing Edges
The LiftMaster 50103 pneumatic air hose is replacement soft rubber hose for compatible LiftMaster pneumatic sensing edge systems. It carries air pressure from the edge to the air switch when the edge is compressed.
Use this hose when the existing pneumatic edge hose is damaged or needs replacement. The correct hose size and length are important for reliable edge activation.
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster |
| Product Type | Pneumatic air hose |
| Part Number | 50103 |
| Material | Soft rubber |
| Inside Diameter | 1/2 in |
| Wall Thickness | 3/32 in |
| Application | Pneumatic sensing edge air line |
| Common Use | Commercial overhead door safety edge systems |
| Notes | Confirm sold length and quantity before ordering |
Also Known As / Related Part Numbers
- 50103
- 50-103
- LM-50103
- LiftMaster Pneumatic Air Hose
Compatible With / Common Applications
- Compatible LiftMaster pneumatic sensing edge systems
- Exterior air switch installations using matching hose size
- Commercial overhead door pneumatic edge applications
Technician Note
Small air leaks can make a pneumatic edge unreliable. When replacing hose, inspect the hose plug, air switch fitting, and edge connection instead of replacing only the visible damaged section.
Before Ordering
- Measure the hose size and required replacement length.
- Confirm the edge system uses pneumatic hose, not an electric or resistive edge only.
- Inspect the air switch and hose plug for leaks or damage.
- Route the hose so it does not kink or pinch as the door moves.
- Test edge activation after installation.
Professional Advisory
A pneumatic safety edge should not be ignored if it has a cut or leaking hose. Repair and test the edge system before returning the door to automatic operation.
Product Questions and Answers
What is LiftMaster 50103 used for?
It is replacement pneumatic air hose for compatible sensing edge systems on commercial overhead doors.
What size is this air hose?
It is commonly listed as 1/2 in inside diameter with a 3/32 in wall.
Does this hose include the air switch or plug?
No. This item is the hose only. Air switches, hose plugs, edge kits, and cord assemblies are separate parts.
Can a cracked hose cause the edge to fail?
Yes. A cracked or leaking hose may keep air pressure from reaching the air switch when the edge is compressed.
Should the edge be tested after replacing the hose?
Yes. Any time hose or edge components are replaced, the door safety edge response should be tested before normal operation.
