Roots RAM Whispair Series (RAM-J)
RAM heavy-duty frames with Whispair jet-porting.
Overview
The RAM-J adds Whispair porting to the ductile-iron RAM frame — the combination most often specified for large aeration duty at high pressure or on plants sensitive to pipe pulsation and blower noise.
Key features
- Whispair porting reduces discharge pulse magnitude
- Ductile iron construction for continuous heavy duty
- Uni-directional — pay attention to rotation on install
- Preferred for large municipal aeration blowers
Available models
Representative sizing across the range. Our applications team confirms the right frame for your operating point.
| Model | Flow (ICFM) | Max Pressure / Vacuum | Notes |
|---|---|---|---|
| RAM-J 409 | 180 – 1,150 | 18 PSIG | — |
| RAM-J 412 | 240 – 1,500 | 18 PSIG | — |
| RAM-J 418 | 360 – 2,300 | 18 PSIG | — |
| RAM-J 616 | 700 – 3,500 | 15 PSIG | — |
| RAM-J 624 | 1,050 – 4,500 | 15 PSIG | — |
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Talk to an Expert
Ready to specify?
Tell us the flow, pressure and gas conditions — we'll come back with a right-sized recommendation, package options and lead time.
(800) 955-6188Roots RAM Whispair Series (RAM-J) SKUs
8+ — engineered to your operating point.
Fast Response
Applications engineers on the line Mon–Fri, 7am–5pm PT.
Ready to move on your project?
Send us your operating conditions or a P&ID. Our applications team responds within one business day with sizing, package options and lead time.
- Flow, pressure and gas conditions review
- Frame size and drive recommendation
- Package, enclosure and accessory options
- Lead time and firm quote