VL

VL

Valtek VL series spring cylinder linear actuators are powerful, compact, high-performance pneumatic actuators that provide solid throttling or on-off operation for automatic control valves. The positioner supplies air to both sides of the piston, providing stiff, precise movement and high-frequency response and quick stroke speeds.

Brand: Valtek
Category: Modulating
Type Piston Cylinder
Action Linear
Sizes 25, 50, 100, 200, 300, 400, 600
Fluid Power Pneumatic
Pressure Rating 150 psig
Life Cycles Standard: 150,000 to 500,000; UHC Design: 2,000,000
Fail Safe Operation Last, Closed, Open
Enclosure Zinc Plated Steel, Painted Carbon Steel, Painted Anodized Aluminum
Manual Override Side-Mounted, Top-Mounted and Push-Only Handwheel
Options Ultra High Cycle, Extended Spring, Carbon Steel Cylinder, Fail Last Lock-Ups, External Volume Tanks

Double-acting configuration responds quickly to signal changes

Supply pressure is modulated to both sides of piston for stiff, precise actuator operation

Small air volume between the piston and the bottom of the cylinder provides powerful pneumatic stiffness, without plug slamming

Cylinder design uses less supply air than comparable diaphragm actuators

150 psi (10.3 Bar) operating pressure allows substantially higher thrust capabilities than comparable diaphragm actuators

Longer strokes provide better process control, VL25 has a 11/2-inch (38 mm) stroke, compared to linear diaphragm actuator with 3/4-inch (19 mm) stroke

For easier installation and maintenance, spring cylinder linear actuators are substantially lighter and more compact than comparable linear diaphragm actuators

Periodic maintenance is easy to perform since the spring cylinder actuator only requires the removal of three parts to access all internal parts

Spring cylinder linear actuators have one-third the number of parts as diaphragm linear actuators; wear parts cost 10 percent of those for diaphragms, and less inventory is required to maintain actuators

Failure mode is easily reversed without additional parts