BUCHI V-700 0800011508 Replacement Upgrade Solution

Product Overview

BUCHI V-700 0800011508 Replacement Upgrade Solution for Rotavapor Series: Seamless Transition from Legacy Vacuum Systems

Upgrading or replacing a failed BUCHI V-700 diaphragm vacuum pump (part number 0800011508) does not have to mean extended laboratory downtime. This oil-free, chemically resistant diaphragm vacuum pump delivers an ultimate vacuum of 2 mbar and is the direct OEM-specified replacement for the V-700 platform used across BUCHI’s Rotavapor R-100, R-200, R-210, R-215, and R-300 evaporator series. Whether your existing V-700 has reached end-of-service life, suffered diaphragm failure, or is simply being phased out of a multi-unit laboratory setup, this replacement unit restores full vacuum performance without requiring modifications to your existing glassware assembly, vacuum tubing, or controller wiring.

The V-700 operates at a flow rate of 1.5 m³/h and is engineered for continuous-duty solvent recovery applications involving aggressive media such as acetone, ethanol, methanol, dichloromethane, and ethyl acetate. Its PTFE-coated diaphragm and valve set provide chemical resistance equivalent to the original factory specification, ensuring compatibility with the same solvent profiles your laboratory has been running. When paired with the BUCHI V-855 vacuum controller or the integrated vacuum control module on the Rotavapor R-300, the replacement V-700 communicates via the same analog 0–5 V control signal, requiring no reconfiguration of the controller parameters or PID setpoints.

For laboratories transitioning from an older V-700 unit that was connected to a BUCHI B-491 heating bath or a Rotavapor R-200 with a separate V-800 vacuum controller, the replacement process is straightforward: disconnect the vacuum tubing at the pump inlet, unplug the power cord and the controller signal cable, remove the four M4 mounting screws from the base plate, and install the new unit in reverse order. The footprint, port orientation, and cable connector type are identical to the original 0800011508 specification, so no adapter fittings or bracket modifications are required.

Laboratories operating a multi-evaporator manifold — for example, a bank of three Rotavapor R-210 units sharing a single V-700 pump via a vacuum distribution manifold — should verify that the replacement pump’s flow capacity is sufficient for the combined load before returning the system to service. In high-throughput environments where vacuum demand exceeds the V-700’s 1.5 m³/h rating, an upgrade to the BUCHI V-600 or V-300 series pump may be appropriate. The V-600 offers a higher flow rate while maintaining the same 2 mbar ultimate vacuum and the same controller signal interface, making it a drop-in performance upgrade for demanding applications.

When replacing the V-700 as part of a broader Rotavapor system refresh, it is common practice to simultaneously inspect and replace the Rotavapor glassware set — including the evaporating flask, receiving flask, condenser coil, and vapor duct — as well as the PTFE sealing ring and the glass joint O-rings. These consumable components share a similar service interval with the pump diaphragm and are frequently replaced together to minimize future unplanned downtime. The BUCHI 11070025 seal kit and the 11070026 diaphragm replacement kit are compatible with the V-700 platform and are available as companion items for preventive maintenance programs.

For laboratories that have been operating a legacy BUCHI RE-111 or RE-121 rotary evaporator with a separate vacuum pump and are now migrating to a modern Rotavapor R-100 or R-300 platform, the V-700 0800011508 is the recommended vacuum source for the new system. The transition from a water aspirator or a legacy oil-sealed rotary vane pump to the V-700 diaphragm pump eliminates oil mist contamination, reduces maintenance frequency, and removes the need for a water trap or oil separator in the vacuum line. The V-700’s built-in solvent vapor trap protects the pump mechanism from condensate ingress, which is a common failure mode in older vacuum pump designs used with rotary evaporators.

Procurement teams sourcing this replacement unit should note that the 0800011508 part number supersedes earlier BUCHI vacuum pump references including the 1127-452-02 and 27220C catalog numbers, which appear in older service manuals and spare parts lists for the Rotavapor R-200 and R-210 series. All three references describe the same physical unit and are interchangeable for ordering purposes. The BTS10-2,5/8-24-RL-720 designation refers to the OEM pump mechanism specification and is included in the technical documentation for cross-reference validation.

Compatibility Comparison Table

Seamless Upgrade Solutions

A complete V-700 replacement or Rotavapor system migration typically involves more than the pump itself. During the upgrade process, engineers and lab managers commonly address the following companion components to ensure the entire vacuum evaporation system is returned to optimal condition:

The BUCHI V-855 vacuum controller is the recommended control interface for the V-700 pump in standalone configurations where the Rotavapor does not have an integrated vacuum module. It provides precise vacuum setpoint control via the same analog signal interface and is compatible with all Rotavapor R-series evaporators. For systems running the older BUCHI V-800 vacuum controller, the V-855 is the direct upgrade path and requires no rewiring of the pump signal cable.

The BUCHI B-491 heating bath and its successor the B-495 heating bath are the standard thermal sources for the Rotavapor platform. When replacing the V-700 as part of a system overhaul, the heating bath temperature sensor and the bath fluid should be inspected and refreshed. The B-495 offers improved temperature uniformity and a wider operating range compared to the B-491, making it a worthwhile upgrade for laboratories processing heat-sensitive compounds.

The Rotavapor R-300 evaporator represents the current-generation platform for laboratories migrating from the R-200 or R-210. It integrates vacuum control, heating bath communication, and rotation speed management into a single interface, reducing the number of discrete components — including the need for a standalone V-855 controller — and simplifying the overall system footprint. The V-700 0800011508 is the specified vacuum pump for the R-300 platform.

Consumable items including the BUCHI 11070025 seal kit, the 11070026 diaphragm replacement kit, and the Rotavapor glassware set (evaporating flask, receiving flask, condenser, and vapor duct) are routinely replaced alongside the pump during scheduled maintenance intervals. Sourcing these items together with the V-700 replacement unit reduces future service visits and ensures the entire system is returned to factory specification in a single maintenance window.

For laboratories requiring vacuum measurement verification after pump replacement, a Pirani vacuum gauge or a capacitance manometer compatible with the DN 10 inlet port can be temporarily installed in the vacuum line to confirm that the replacement V-700 is achieving the specified 2 mbar ultimate vacuum before the system is returned to production use.

Retrofit Guidance FAQ

Q: Is the 0800011508 a direct replacement for the 1127-452-02 and 27220C part numbers?
A: Yes. All three part numbers refer to the same V-700 diaphragm vacuum pump. The 0800011508 is the current active OEM part number and supersedes the earlier references. No mechanical or electrical modifications are required.

Q: Will the replacement V-700 work with my existing V-800 vacuum controller?
A: Yes. The V-700 0800011508 uses the same analog 0–5 V control signal as the original unit and is fully compatible with the V-800 and V-855 vacuum controllers. No reconfiguration of controller parameters is required.

Q: Do I need to modify the vacuum tubing or fittings when installing the replacement pump?
A: No. The inlet port is a DN 10 hose barb, identical to the original V-700. Standard 10 mm vacuum tubing connects directly without adapters.

Q: Can the V-700 be used with a Rotavapor R-300 that has an integrated vacuum module?
A: Yes. The R-300’s integrated vacuum control module communicates with the V-700 via the same analog signal interface. The pump connects to the controller port on the R-300 base unit using the standard signal cable.

Q: What is the recommended procedure for verifying pump performance after installation?
A: Connect the pump to the vacuum line, close all glassware joints, and run the pump for 5 minutes with the system sealed. The vacuum gauge on the V-855 controller or the R-300 display should reach 2 mbar or below under no-load conditions. If the ultimate vacuum is not achieved, inspect the glassware joints, O-rings, and tubing connections for leaks before concluding that the pump is defective.

Q: Is the replacement pump compatible with halogenated solvents such as dichloromethane?
A: Yes. The PTFE-coated diaphragm and valve set are chemically resistant to dichloromethane, chloroform, and other halogenated solvents commonly used in rotary evaporation applications.

Warranty Assurance

Every BUCHI V-700 0800011508 unit shipped by TOPNLMS is covered by a 12-month warranty from the date of delivery. Prior to shipment, each unit undergoes a functional performance test to verify that the pump achieves the specified 2 mbar ultimate vacuum and that the motor, diaphragm, and valve assembly are free from defects. Units that do not pass the pre-shipment test are not dispatched.

In the event of a warranty claim, TOPNLMS provides a replacement unit or a full refund at the buyer’s discretion. Warranty claims are processed within 3 business days of receiving the defective unit and supporting documentation (including a brief description of the fault and photographic evidence where applicable). Return shipping for warranty replacements is covered by TOPNLMS for orders shipped within mainland China.

For international orders, TOPNLMS coordinates with the buyer to arrange the most cost-effective return logistics solution. Replacement units for confirmed warranty claims are dispatched within 5 business days of claim approval. TOPNLMS maintains stock of the V-700 0800011508 to ensure that warranty replacements are not subject to lead-time delays.

Buyers are encouraged to inspect the unit upon receipt and report any transit damage within 48 hours of delivery. Photographic documentation of packaging and unit condition at the time of receipt is recommended as a standard procurement practice for laboratory equipment.

For procurement inquiries, technical compatibility questions, or warranty support, contact the TOPNLMS team directly.