Castair SA100M (C1) — Intake Noise Silencer, Factory Mounted for C1 Pumps
The Castair SA100M (C1) is the factory-mounted version of the SA100 intake noise silencer, configured specifically for Cast Air C1 single-cylinder pump applications. The M designation means this silencer ships already mounted to the intake fitting bracket — it arrives ready to bolt on rather than requiring you to source and fit the mounting hardware separately. If you have a C1 pump configuration and want to add intake noise reduction without any fabrication work, the SA100M is the correct choice.
C1 refers to the single-intake pump configuration in the Castair lineup. These pumps have one intake port, requiring one silencer. The SA100M is matched to that single-intake configuration with factory hardware included for direct bolt-on installation.
What the Silencer Does
Every piston compressor draws in a sharp burst of air on each intake stroke. The rapid opening and closing of the intake valve creates a pulse at the intake port that radiates as audible noise. On a compressor running in a shop near customer areas, offices, or any noise-sensitive space, this intake drone is one of the primary complaint points. The SA100M's internal acoustic baffling absorbs and diffuses that pulse before it radiates as sound — the result is a measurably quieter machine with no reduction in intake airflow or compression output.
Key Features
- Factory-Mounted Configuration: Arrives pre-assembled with mounting hardware — bolt-on installation for C1 pump applications
- C1 Pump Specific: Sized and configured for Cast Air C1 single-intake pump assemblies — not a universal fit
- Intake Pulse Damping: Internal baffling reduces the intake noise signature on every compression stroke
- No Airflow Restriction: Does not reduce pump output when filter element is clean and unobstructed
- Cast Air OEM Accessory: Manufactured to Cast Air specifications for correct fit on C1 pump intake ports
- Serviceable: Inspect and replace the filter element periodically to maintain airflow and noise reduction performance
Technical Specifications
- Part Number: SA100M (C1)
- Type: Compressor intake noise silencer, mounted
- Pump Compatibility: Cast Air C1 pump configuration (single intake)
- Quantity: 1 silencer, factory mounted
- Manufacturer: Cast Air (Castair)
- Price: 44.95
Available Configurations — Full Silencer Lineup
- SA100 — Single silencer, unmounted (18.58). For basic single-intake applications where you source your own mounting
- SA100M (C1) — Single silencer, factory mounted for C1 pumps (44.95). This product.
- SA100x2M (C2, C3) — Two silencers, mounted, for C2/C3 two-intake configurations (89.99)
- SA100x4M — Four silencers, mounted, for multi-compressor facilities (,030.92)
When Does a Shop Need the SA100M (C1)
Choose the SA100M (C1) when:
- You have a Cast Air C1 pump and want the cleanest possible bolt-on installation
- You prefer factory-mounted hardware over sourcing mounting components separately
- You are adding intake noise reduction to an existing C1 compressor that is located near noise-sensitive areas
- You are replacing a damaged or missing original silencer on a C1 pump
Step up to the SA100x2M when: Your pump has a C2 or C3 configuration with two intake ports — the SA100M only covers one intake.
Why Buy From Air Compressor Factory Direct?
- Authorized Cast Air dealer since 1991
- Free shipping on qualifying orders
- Free technical support at 866-217-0063 — confirm your pump is a C1 configuration before ordering
- Full manufacturer warranty
Call 866-217-0063 for quick answers and help!
