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Digital Vacuum Regulator ∙ 120 Vac ∙ Catalog# DVR-200

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Digital Vacuum Regulator ∙ 120 Vac ∙ Catalog# DVR-200

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Quick Overview

An ideal instrument for laboratory vacuum regulation. 

Connect the regulator to any vacuum pump or vacuum source and then to any piece of equipment to regulate pressure in most cases to ± 1 torr. 

A pressure ramp feature evacuates equipment at a user defined rate to eliminate bumping due to solvent degassing or over-evacuation. 

The vacuum regulator is ideally suited for large volume distillations, rotary evaporators and vacuum chambers. 

Recover > 99% of solvent from rotary evaporators


NO Mercury

100% digital pressure entry and control

Wetted parts are 100% stainless steel and Teflon

Vacuum ramping feature eliminates bumping

USB port and free software for PC control

Resists: All organic solvents Acids Bases Water

Not recommended for small volume distillations or applications which involve a continuous purge with gas, these applications are better performed by J-KEM’s Precision Vacuum Regulator, Model DVR-1000.

Two Styles of Regulators to Choose From

Model DVR-200

Designed for continuous vacuum sources, such as oil-filled vacuum pumps, aspirators, or systems that are “always on”, like in-house vacuum systems. The DVR-200 regulates pressure by opening and closing a valve that separates the vacuum source from the system being evacuated. In most cases, the DVR-200 is the best choice.

Model DVR-280

Designed for use with diaphragm vacuum pumps that regulate pressure by turning the pump On and Off. The DVR-280 doubles the life of diaphragm pumps by starting the pump at atmospheric pressure before connecting it to the vacuum system.

Product Description

New in 2014

USB port with free KEM-Net software and KEM-IO feature

At the heart of J-KEM’s 200-Series controllers is a new, high speed microprocessor that performs 3 functions:

1. Power Regulation J-KEM’s original power control computer is replaced by a next generation microprocessor. The power control computer is J-KEM’s patented technology that adjusts power to the heater 2048 times per second resulting in 0.1o C regulation.

2. USB Communications PC communications and free KEM-Net software enable remote PC control, GLP/GMP compliant data collection, and multi-temperature ramps built in an Excel-like table.

3. KEM-IO Allows the controller to turn other pieces of equipment On/Off, change the temperature set point, or Start/Stop heating based on external inputs, temperature, or time.



Turn heating off when the hood door is opened. Turn it back on when closed.

Open a 120 Vac cooling valve if the reaction exotherms to 110°C.

When the temperature reaches 85°C, start a reagent addition pump or stirrer.


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