Agilent Varian 949-9335S001 – Two-Stage Rotary Vane Vacuum Pump | S7900 / S9500 Platform
Engineering Background
The Agilent Varian 949-9335S001 is a factory-configured rotary vane vacuum pump assembly engineered for integration into Agilent Varian’s S7900 (P/N 162383, RFSM-1) and S9500 (P/N 162672, RFSM-2) turbomolecular pump systems. Driven by a Leroy Somer induction motor, this unit delivers the reliable roughing and backing vacuum required to sustain high-vacuum conditions in analytical and semiconductor process environments.
Product Positioning
Designed as a direct OEM replacement or system-level upgrade, the 949-9335S001 eliminates compatibility risk for maintenance engineers managing Varian turbo pump stations. Konmask.com supplies this unit from verified surplus and refurbished channels, with full traceability documentation available upon request.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number (OEM) | 949-9335S001 |
| Compatible System – 1 | Varian S7900 | Ref. P/N 162383 | RFSM-1 |
| Compatible System – 2 | Varian S9500 | Ref. P/N 162672 | RFSM-2 |
| Pump Type | Two-Stage Rotary Vane (Oil-Sealed) |
| Drive Motor | Leroy Somer AC Induction Motor |
| Ultimate Pressure | ≤ 1 × 10⁻³ mbar (typical) |
| Pumping Speed | Refer to S7900/S9500 system datasheet |
| Inlet Connection | NW25 / KF25 (system-matched) |
| Lubrication | Varian Vacuum Pump Oil (Type 19 or equivalent) |
| Gross Weight | 2.6 kg (pump assembly) |
| Country of Origin | United States |
| Condition Available | Refurbished / Tested Surplus |
Proven Application Environments
- Turbomolecular pump roughing / backing (S7900, S9500 stations)
- Mass spectrometry fore-vacuum systems
- Semiconductor process chambers (CVD, PVD, etch)
- Electron microscopy vacuum columns
- Analytical instrument vacuum maintenance
- Research laboratory high-vacuum systems
Engineering Advantages
- OEM-matched assembly – direct drop-in for S7900 / S9500 RFSM configurations, no adapter required
- Leroy Somer motor – industrial-grade induction motor with proven MTBF in continuous-duty vacuum service
- Two-stage vane design – achieves deep roughing vacuum to support turbomolecular pump start-up and operation
- Oil-sealed construction – stable ultimate pressure, low vibration, field-serviceable
- Verified surplus sourcing – each unit inspected and function-tested before shipment
System Architecture & Signal Flow
In a Varian S7900 / S9500 turbo pump station, the 949-9335S001 rotary pump serves as the fore-pump (backing pump) in a two-stage vacuum architecture:
- Roughing stage – rotary pump evacuates the chamber from atmosphere to ~1 × 10⁻² mbar
- High-vacuum stage – turbomolecular pump (S7900 / S9500) takes over, achieving pressures down to 10⁻⁷ mbar or lower
- Continuous backing – rotary pump maintains fore-line pressure during turbomolecular pump operation
The RFSM (Rotary Fore-pump Station Module) integrates the pump, motor, and mounting frame as a single serviceable assembly, simplifying maintenance and replacement logistics.
Sourcing & Quality Verification
- Units sourced from decommissioned OEM systems or authorized surplus channels
- Each pump inspected for shaft seal integrity, vane condition, and oil contamination
- Function-tested to confirm ultimate pressure performance prior to dispatch
- Original part number label and traceability documentation retained where available
- Packaging: anti-static foam, sealed poly bag, outer carton with fragile labeling
Procurement Process
- Confirm compatibility: verify your system P/N (162383 RFSM-1 or 162672 RFSM-2) matches your S7900 or S9500 station
- Contact Konmask.com for real-time stock status and lead time: [email protected] | +0086 19859288691
- Request inspection report or test data if required for maintenance records
- Place order – standard export packaging; DHL / FedEx international shipping available
- Receive unit with packing list and traceability sheet
Technical FAQ
Q: Is this pump compatible with both S7900 and S9500 systems?
A: Yes. The 949-9335S001 is the OEM pump assembly for both the S7900 (162383 RFSM-1) and S9500 (162672 RFSM-2) rotary fore-pump station modules.
Q: What oil should be used?
A: Varian Vacuum Pump Oil Type 19 (P/N 969-9011) or an equivalent low-vapor-pressure hydrocarbon oil is recommended. Do not use silicone-based oils.
Q: Is the Leroy Somer motor replaceable separately?
A: The motor is a matched assembly component. Konmask.com recommends replacing the full RFSM assembly (949-9335S001) to maintain system performance and warranty traceability.
Q: What is the lead time?
A: Subject to stock availability. Contact us for current inventory status. Typical dispatch within 3–5 business days for in-stock units.
Q: Can you provide a test report?
A: Yes, upon request. Function test data (ultimate pressure achieved, run time) is available for units in our verified inventory.
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Contact: [email protected] | +0086 19859288691
