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Jianshi Biotechnology (Beijing) Co., Ltd.

Oilless Vacuum Pump with Buffer Bottle (TIVP-85)

The VP Series utilizes a dry-running, oil-free diaphragm mechanism, enabling continuous operation without the need for lubrication. Characterized by low acoustic noise, high pumping efficiency, and extended service life, this unit is an essential asset for modern laboratories. It is ideally suited for gas transfer and vacuum applications across chemistry, pharmaceuticals, and petrochemicals, including but not limited to vacuum distillation, solvent concentration, and solid-phase extraction (SPE).

Item number	Name	Specifications	Introduction	Price
TIVP-85	Oil-free vacuum pump (with buffer bottle)	Taiwan	Not corrosion-resistant; maximum vacuum level: 0.085 MPa; single‑nozzle pumping rate: 30 L/min.	2200

Keywords

Jianshi Bio VP Series Oil-Free Vacuum Pumps

Product Overview

Product Features

The design is aesthetically pleasing, ergonomically sound, and easy to operate.
Equipped with thickened rubber feet, it significantly reduces operational vibration, ensuring stable equipment placement.
The unit is lightweight, easy to move and transport, saves laboratory bench space, and features simple maintenance and servicing that can be performed independently.
The fuselage features a porous heat-dissipation structure, delivering excellent thermal performance and effectively extending the device’s service life.
Oil-free design ensures a clean, contamination-free experimental environment and low maintenance costs.
The aluminum alloy body, finished with an electrostatic powder-coating process, is robust, aging-resistant, and corrosion‑proof.
Equipped with a high-performance AC asynchronous motor, it delivers stable operation and long service life.
Single‑stage models come standard with a silencer, delivering excellent noise reduction; dual‑stage models enable simultaneous monitoring of positive and negative pressure, while the dual pump heads accommodate both vacuum and pressurization needs.
Equipped with a built-in automatic cooling and ventilation system, it supports long-term, uninterrupted, continuous operation.

Technical Specifications

Parameter Item	TIVP-85	TIVP-90	TIVP-85D	TIVP-90D
Input power supply	AC220V/50HZ
Power W	165	245	165	245
Display mode	Pressure gauge shows
Minimum scale division of the pressure gauge	Negative pressure gauge: -0.002 MPa		Negative pressure gauge: -0.002 MPa; Positive pressure gauge: 0.02 MPa
Traffic	30L/min	60L/min	30L/min	60L/min
Maximum vacuum level	-0.085MPa	-0.09MPa	-0.085MPa	-0.09MPa
Number of pump heads	1 piece	2 pieces	1 piece	2 pieces
Rotational speed range	≥1360rpm
Normal stress	/	/	20.3 psi (0.14 MPa)	26.8 psi (0.185 MPa)
Tracheal connector specifications	φ8mm	φ8mm	φ8mm	φ8mm
Noise	<60db	<60db	<60db	<62db
Net weight (kg)	5	6.2	5.3	6.5
Product dimensions (mm)	290×160×280

Core Advantages

Oil-free and clean : No lubricating oil required; no oil contamination of the sample.
Two-way optional : Single gauge measures only negative pressure; Type D dual gauge is a dual‑purpose instrument for both positive and negative pressures.
Low-noise vibration reduction Rubber feet + silencer, ensuring minimal vibration and low noise during operation.
Long-term operation Built-in automatic cooling and exhaust system for continuous, uninterrupted operation.

Technical Specifications

Power supply AC 220 V / 50 Hz, standard laboratory voltage
Vacuum level 85 series - 0.085 MPa, 90 series - 0.09 MPa
Traffic 85 model: 30 L/min, 90 model: 60 L/min
Interface Unified φ8mm standard air hose connector

Key Contraindications for Use

Prohibition Suction of corrosive, flammable, and explosive gases
Prohibition Do not operate with wet hands or use with mismatched voltage.
Prohibition Clean the pump head with organic or acidic solvents and apply lubricant.
Prohibition Operating the device with unauthorized disassembly or by covering the cooling vents.

Jianshi Bio VP Series Oil-Free Vacuum Pumps – High-Frequency FAQ

1. Can the JianShi Bio VP series oil-free vacuum pumps handle corrosive, flammable, and explosive gases?

Strictly prohibited: This vacuum pump is not designed with corrosion‑resistant or explosion‑proof features; the pumping of corrosive or explosive gases is prohibited.

Do not use in flammable or explosive environments, nor in underwater conditions with high humidity, and do not handle hazardous media. Forcibly operating the pump under such conditions may cause corrosion of the pump body and pose a risk of fire or explosion.

2. What are the key differences between the VP standard single‑display model and the 85D/90D dual‑display models? How should you choose the right model?

1. Functional differences: The single‑stage model performs only negative‑pressure suction; the dual‑stage model supports both negative‑pressure evacuation and positive‑pressure blowing, with dual pump heads capable of both suction and pressurization.

2. Instrument configuration: The single‑gauge model is equipped only with a negative pressure gauge and comes standard with a silencer for noise reduction; the dual‑gauge model features both positive and negative pressure gauges, enabling real-time monitoring of bidirectional pressure.

3. Pressure parameters: Maximum positive pressure is 0.14 MPa at 85D and 0.185 MPa at 90D; noise levels are slightly higher than those of standard single‑meter models.

For vacuum concentration and reduced-pressure distillation, choose the standard model; for applications requiring gas sparging or positive-pressure purge in solid-phase extraction, select the D dual‑gauge model.

3. What are the causes of low pressure gauge readings and insufficient vacuum levels, and how can these issues be resolved?

Fault Causes and Corresponding Remediation Plans:

① Air leaks in piping, fittings, or vacuum tubes: Replace damaged vacuum tubes and reseal the pipe connections.

② Valve disc or diaphragm contamination/damage: Disassemble and clean the valve disc; if damaged, replace it with a new valve disc or diaphragm.

③ Pressure regulator loose: Tighten the pressure regulating valve.

④ Insufficient supply voltage: Ensure the equipment is powered by its rated AC 220 V. If the voltage does not match, install a transformer.

4. What is the standard operating procedure for vacuum pumping (vacuum distillation, solid-phase extraction)?

1. Place the device on a stable, dry, and non-slip surface.

2. Connect the vacuum tube between the vacuum pump’s exhaust port and the experimental apparatus, applying grease to the joint to ensure a tight seal.

3. Connect the power supply and turn on the machine; the motor will run, and the vacuum gauge pointer will move counterclockwise.

4. Perform operations once the required vacuum level has been achieved.

5. At the end of the experiment, first turn off the power supply, and disconnect the tubing only after the pressure in the pump has been relieved.

5. What are the do-nots when performing routine maintenance and cleaning of a vacuum pump? What are the correct maintenance procedures?

Washing contraindications: Do not use acids, corrosive substances, or flammable organic solvents to clean the pump head; do not lubricate any internal components, as this will significantly reduce the equipment’s service life. Only water-based solvents and alcohol may be used to clean the air chamber.

Standard maintenance procedure:

1. Completely disconnect the power supply; 2. Loosen the pressure valve to release the air pressure inside the pump, then remove the external piping.

3. Disassemble the pump head and air chamber, and inspect the sealing rings and valve discs.

4. Clean contaminated components with aqueous solvents, and remove dust using high-pressure air blow-off.

5. Replace damaged sealing rings and valve discs directly, then reassemble in the original sequence.

6. What should be done about excessive equipment noise and body vibration or displacement?

1. Inspect the rubber feet for loss or wear; they help cushion vibrations, and any missing ones must be replaced.

2. Check whether the pressure regulator is loose, and tighten it again.

3. Air leaks in the piping can exacerbate noise; replace any damaged vacuum hoses.

4. Clogged filter cotton and silencer can impede airflow and increase noise; clean the filtration media regularly.

5. Resonance-induced displacement can be reduced by operating at lower speeds, and the flat, non-slip worktable should be replaced.

7. What are the operating procedures for using the LC-VP-85D/90D dual‑meter model in positive‑pressure boost mode?

1. Place the vacuum pump steadily on a dry, level workbench.

2. Connect the pipeline of the pressurization device to the equipment’s inflation port, applying grease to the connection to ensure airtightness.

3. Turn on the power; you can feel a steady airflow when you touch the inflation port.

4. Monitor the positive pressure gauge reading and complete the pressurization procedure.

5. After use, disconnect the power supply and, once the pressure has been relieved, remove the connecting pipelines.

8. What are the strict environmental requirements for installing a vacuum pump in a laboratory?

Environmental Hard Norms:

1. The environment shall be clean, dry, and well-ventilated; use is prohibited in areas with high dust levels, high humidity, or flammable and explosive hazards.

2. Place the countertop on a level, stable, flame-retardant, and non-slip surface;

3. The ambient temperature shall not exceed 55°C; ensure adequate ventilation space around the equipment and do not cover the heat dissipation vents.

4. Power outlets must be reliably grounded to prevent the risk of electric shock.

9. After power is applied, the vacuum pump motor fails to start. How can you troubleshoot the issue step by step?

1. Verify the supply voltage; it must match AC 220 V/50 Hz. If the voltage does not comply, a transformer must be installed.

2. Inspect the power cord for signs of aging or damage; replace it immediately if it is aged.

3. Verify whether the equipment is started under pressure: First, loosen the pressure regulator to release all air from the pump, then start the machine.

4. Check the socket’s grounding and whether the power supply line is open-circuited, and troubleshoot the power supply circuit.

10. What are the equipment warranty terms? Which situations are not covered under the free warranty?

Warranty Policy: Within one year of purchase, for manufacturer‑originated quality defects arising from normal use, free repair and replacement of parts are provided (excluding consumables and wear‑and‑tear components).

The following scenarios are not covered under the free warranty and are eligible for paid repair only:

1. The warranty period has expired; 2. Damage caused by improper use, maintenance, or storage;

3. Unauthorized disassembly of the device by non‑official after-sales service; 4. Failure to provide valid proof of purchase;

5. Damage caused by force majeure events such as floods, typhoons, and earthquakes;

6. Improper use, such as pumping corrosive or explosive gases, can result in damage to the pump body.