User Manual
VLP-24 MagnaValve
Magnetic Valve for Wheel Machine Applications
Features
• Flow rate range of 200 - 1000 lb/min (91 - 453 kg/min)*
• Media ow control for wheels up to 25 Hp (19 kw)
• Regulates ow of steel media and grit
• Normally closed
• No moving parts for maintenance-free operation
• Provides controllable shot ow rates
• Easy retrot installation
• 24 Vdc Power
* Flow rate depends on media type
Description
The VLP-24 MagnaValve® is a normally closed magnetic valve that regulates the ow of steel shot and grit in wheel
blast machines. The VLP-24 is maintenance free — it has no moving parts so there are no parts to wear or break and
it is completely sealed to prevent media dust from entering the valve.
How It Works
The VLP-24 has rare earth permanent magnets for normally closed operation and an electromagnet for controlling
shot ow rates. With power applied, the magnetic eld is neutralized and shot is allowed to ow through the valve.
When no power is applied to the MagnaValve, the permanent magnets stop all ow. If the power is interrupted for
any reason, the permanent magnets securely hold the shot, thereby virtually eliminating shot leakage.
Closed or Open Loop Operation
For an “automatic” closed-loop operation, an Electronics Inc. (EI) AC-24 Controller will detect the current
load on the wheel motor and regulate the ow of media to the VLP-24. This closed-loop system will provide
accurate and repeatable ow rates over a 200 - 1000 lb/min (91 - 453 kg/min) range. The EI POT-24 Controller
(sold separately) provides “manual” open loop control. Data sheets available for download at www.electronics-inc.com:
AC-24 Controller, POT-24 Controller
A clear and comprehensive installation manual simplies installation of the VLP-24 MagnaValve. The valve is
factory tested and results are supplied upon request. In addition, the products are supported by the EI
application engineering sta.
Electronics Inc.
56790 Magnetic Drive
Mishawaka, Indiana 46545 USA
(574)256-5001
www.electronics-inc.com
Specication is subject to change without notice
Rev 3/13
MagnaValve is a registered trademark of Electronics Inc.
AC-24
Controller
Regulated Media Flow
Control Signal
Desired
Motor Current
Motor
Current
Ammeter
Media Accelerated
VLP-24
MagnaValve
Wheel
Media
Hopper
POT-24
Controller
Regulated Media Flow
Control Signal
Motor
Current
Ammeter
Media Accelerated
Media
Hopper
VLP-24
MagnaValve
Wheel
Desired
Motor Current
Closed Loop System with VLP-24 MagnaValve and AC-24 Controller
Open Loop System with VLP-24 MagnaValve and POT-24 Controller
AC-24 Controller
(sold separately)