Sporlan ESX Manual

STEP MOTOR EXPANSION VALVE
Features & Benefits Summary
1.
2. Precise 500 step flow resolution
3. Compact, fully hermetic design—no mechanical joints, no leaks
4. " Dry" stator design
5. Tight shutoff for high efficiency systems
6. Efficient low power design; no holding current required
7.
8. Bi-flow capable for heatpump applications
9. Compatible with nearly all HCFC and HFC refrigerants
Step Motor Valve Function
Step motors accurately achieve and maintain a controlled position making them
ideal actuators for precision flow control valves. Like a conventional DC mo-
tor, the model ESX has a permanent magnet rotor and a stator; however, they
are specially designed for precise positioning, low power, and refrigerant
®
compatibility.
The model ESX step motor expansion valve is the newest
addition to Sporlan Valve Division's complete line of high
quality refrigerant controls. The ESX expansion valve
provides precise flow control for virtually every refrig-
to its compatibility with most halocarbon refrigerant systems,
and most step motor controllers. Installation and operation of
the highly reliable ESX is simple and straightforward; enabling
any type system to be more efficient, more versatile, and more
reliable. The model ESX step motor expansion valve provides
maximum system value through precise, energy efficient flow
control.
Highly reliable direct drive step motor
Compatible with bipolar and unipolar type controllers
■
Rugged design
■
No maintenance or re-calibration required
■
10 position choices - movable and replaceable stator coil
■
Eliminates the need for a separate liquid line solenoid valve
■
Durable needle valve construction for reliable 10 year life
■
Rapid response; less than 6 seconds full stroke
Bulletin 100-20-2
February 2006
eration, air-conditioning, and heatpump ap-
plication, from basic to complex, and in a
wide range of environments. This step mo-
tor expansion valve is the ideal choice due