Proportional Valves

The KB family of proportional valves offers a variety of features, flow rates and performance levels. These valves are equipped with integrated OBE with superior reliability and durability featuring digital electronics, IP67 environmental protection, reduced power consumption, valve enable, and ramp adjustment.

• Rated pressure up to - 350 bar (5000 psi)
• Rated flow up to - 700 LPM (185 GPM)
• Function - direction, pressure, flow
• Size - NG6-32 (D03-10)

Designed for Better Performance

Previous models of Vickers proportional valves featured control amplifiers built and pre-wired directly onto the valves for simple installation. Integration of the two produces a product that can be cost effective over previous models. The KB proportional valve takes the electronics integration concept a step further, by placing external electronics wiring inside the valve. This makes Vickers KB proportional valves less susceptible to failure.

Integrated Amplifiers Mean “Plug and Play”

Integrated amplifiers are factory preset and eliminate any adjustment of gain, deadband compensation, or dither required for separate card and valve combinations. Plus they eliminate the need for field adjustments and separately wired and mounted cardholders. Replacement valves can be fitted without adjusting or changing the control signals.

New Design Means New Applications

With Vickers KB proportional valves, design engineers now have a viable new control package that they’ve never had before...a new generation of integrated valves that redefine and expand industrial application design capabilities. Vickers proportional valves are much easier to understand and install than previous models using separate drive amplifiers. The only electrical inputs required are a power supply and a voltage command signal.

Built to Last

For durability, you can’t beat a KB proportional valve. The amplifier is housed in a durable metal enclosure, sealed against environmental contaminates such as cutting fluid spray, direct, water and fluid wash down. Seven-pin electrical mating connectors are supplied as standard. They are reliable, rugged and provide easy access for test equipment. Consistency of quality is assured with the KB proportional valve. Each valve/ amplifier combination is tested and calibrated as a total assembly with a variation of less than 5% from valve to valve. You can trust Vickers KB proportional valves to do the job as specified and perform consistently and reliably for years.

Specifications, Features and Benefits of KB Prop Valves

Danfoss proportional valve types

Single stage

KBS: Single solenoid analog valve. Spool goes to 4th position when power is removed. Amplifier has spool position feedback.

KBF: Dual solenoid analog valve. Spool stays in center position when power is removed. Amplifier has spool position feedback.

KBD: Dual solenoid digital valve. Spool stays in center position when power is removed. Amplifier does not have spool position feedback.

Dual stage

KBH: Pilot spool goes to 4th position when power is removed. Amplifier has pilot and main-stage spool position feedback.

KBF: Pilot spool stays in center position when power is removed. Amplifier has only main-stage spool position feedback.

KBD: Pilot spool stays in center position when power is removed. Amplifier has no spool position feedback.

Follow these steps to select the appropriate valve:

Step 1: Determine whether the application requires a valve with or without onboard electronics (OBE). Valves with OBE do not require an external controller (PAM card). The controller is built into the valve.

Step 2: Determine whether the application requires a single-stage or dual-stage valve. This decision is made primarily because of flow. For size 5 only, occasionally the lower pressure rating of a spool in body is needed.

Step 3: Determine which valve type is suitable for the application. The valve types listed within the chart include the options detailed to the right.

Step 4: Select the appropriate size.

Step 5: Refer to the specific product catalog for additional details such as pressure ratings, available spool types, power capacity curves, etc., to finalize selection.