Roots RAM Whispair Gas Series (RAM-GJ)
Gas-tight RAM-J variant for biogas and process gas.

Overview
The gas-tight RAM-J. Double-lip seals and buffered purge ports make it the right frame for large landfill gas, digester gas and refinery vapor recovery duty where a standard RAM would leak to atmosphere.
Key features
- Gas-service double-lip shaft seals
- Purge port for buffered nitrogen service
- Explosion-proof motor and Class I Div 2 packaging available
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-GJ 409 | 180 – 1,150 | 15 PSIG | — |
| RAM-GJ 412 | 240 – 1,500 | 15 PSIG | — |
| RAM-GJ 616 | 700 – 3,500 | 15 PSIG | — |
| RAM-GJ 624 | 1,050 – 4,500 | 15 PSIG | — |
Related products
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 Gas Series (RAM-GJ) SKUs
7+ — 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



