A90L-0001-0425 – Refurbished Leybold Vacuum Pump SV25


A90L-0001-0425

$4,000.00

A90L-0001-0425

A90L-0001-0425 – Leybold Refurbished SV25 Vacuum Pump

Laser Experts Part #: VCPFNLSV250425

The SOGEVAC SV 16 and SV 25 (A90L-0001-0425)  are single-stage, oil-sealed rotary vane pumps.

The anti-suck-back valve, gas ballast valve, and an exhaust filter, oil return circuit are integrated functional elements of the SOGEVAC. The pump is driven by a motor directly integrated into the housing.

The rotor (7/3), mounted eccentrically in the pump cylinder (7/6), has three vanes (7/4) which divide the pump chamber into several compartments. The volume of each changes periodically with the rotation of the rotor.

As the rotor rotates, the intake portion of the pumping chamber expands and sucks in gas through the intake port (8/A). The gas passes through the dirt trap and the open anti-suck back valve and enters the pump chamber.

As the rotor rotates further, the vane separates part of the pump chamber from the intake port.

This part of the pump chamber is reduced, and the gas is compressed, then the gas is expelled from the chamber via the exhaust valve (7/7-8). Oil injected into the pump chamber serves to seal, lubricate and cool the pump.

The oil injected with the compressed gas is coarsely trapped in the bottom part of the oil case. Then fine filtering occurs in the integrated exhaust filter elements (8/52). The proportion of oil in the exhaust gas is thus reduced below the
visibility threshold (over 99 % entrapment rate). The oil trapped in the exhaust filters is returned to the oil cycle at the anti-suck back valve. The oil return is controlled by a float valve (8/55).

Oil from the oil reservoir (8/67) is injected directly, so as over the end flange bearings via bores in these end flanges in the pump.The oil flow is ensured by the difference of pressures within the pump.

By opening the gas ballast valve (8/62), a dosed quantity or air – so-called “gas ballast” – is admitted into the pump chamber. This gas ballast prevents condensation (up to the vapor tolerance specified in the Technical Data) when pumping condensable gases or vapors. Unintentional venting of the vacuum chamber, as well as oil, suck back when switching the
pump off is prevented by the built-in anti-suck back valve (8/64).

When the pump is switched off, the pump chamber is vented with gas from the oil pump via a bore in the exhaust valve. Since a pressure in the inner pump section is then higher than in the intake line, the anti-suck back valve close. The gas flowing into the pump chamber also prevents oil from entering the chamber when the pump is idle. A fan attached to motor generates the air flow needed to cool the pump.

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When it comes to quality, Laser Experts refuses to cut corners as we aim to be the best at everything we do. At the core of Laser Expert’s competitiveness is an all-encompassing commitment to guaranteed quality.

That’s why all phases of Laser Expert’s business including research and development, refurbishing, quality control, sales as well as technical service, are designed to deliver top quality products and services. One example of this commitment is that all turbo blowers, power supply units, and vacuum pumps are 100% tested at full current.

 

SKU: VCPFNLSV250425 Category: Tag:
Weight 60 lbs
Dimensions 22 × 15 × 15 in
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New or Refurbished

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