Roots Tri-RAM
Three-lobe RAM variant for pulsation-sensitive high-pressure duty.
Overview
The Tri-RAM combines the ductile-iron RAM cylinder with a three-lobe rotor pair. The result is smoother flow, lower pulsation and quieter operation than a two-lobe RAM at the same operating point — without giving up pressure or vacuum capability.
Key features
- Three-lobe geometry lowers pulsation and noise
- Ductile iron construction for heavy duty
- Common in pneumatic conveying and dense-phase service
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 |
|---|---|---|---|
| Tri-RAM 412 | 240 – 1,500 | 18 PSIG | — |
| Tri-RAM 418 | 360 – 2,300 | 18 PSIG | — |
| Tri-RAM 616 | 700 – 3,500 | 15 PSIG | — |
| Tri-RAM 621 | 900 – 4,000 | 15 PSIG | — |
| Tri-RAM 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 Tri-RAM SKUs
9+ — 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