Stainless Steel Speed Controllers (PSA/PSL/PSS Series)
Precision in Stainless: A Quick Look at AirTAC’s PSA, PSL, & PSS Speed Controllers
In the world of pneumatic automation, speed controllers act as the reins that hold back the horsepower of your cylinders, dictating the precise rhythm of your machine. However, standard valves have a fatal weakness: harsh environments.
For demanding food, pharmaceutical, and marine applications, AirTAC engineered the Stainless Steel PSA, PSL, and PSS Series. These valves deliver the exact micro-control expected from AirTAC, but encased in a rugged body that laughs at corrosion and complies with strict "Copper-Free" manufacturing mandates.
1. The Material Mandate: Why SUS304?
A speed controller operates by throttling the cross-sectional area of airflow. Standard aluminum or brass valves perform flawlessly in clean factories, but they rapidly degrade in aggressive washdown areas.
- Lithium Battery Compliance: The SUS304 body meets strict "No Copper" requirements, eliminating the risk of battery contamination.
- Hygienic Resilience: Ideal for Food & Pharma, the stainless body withstands daily washdowns with hot water and cleaning chemicals without flaking or rusting.
- Internal Armor: Even the internal copper actuation parts are specially nickel-plated to double down on comprehensive corrosion resistance.
⚠️ Engineering Best Practice: When building a full system, pair these valves exclusively with AirTAC’s stainless steel cylinders and fittings. Mixing metals (e.g., threading aluminum valves onto stainless piping) creates a battery effect, leading to rapid galvanic corrosion. Keep the system unified for maximum lifespan.
2. The Geometry Matrix: PSA, PSL, and PSS
AirTAC provides three distinct geometries to optimize your plumbing layout without sacrificing flow linearity:
- PSA (Straight): Inline design where the pipe and valve share the same axis. Ideal for clean, linear piping runs.
- PSL (Elbow): The industry standard L-shaped 90° turn. Designed to mount directly on cylinder ports to minimize vertical height.
- PSS (Universal): A fully rotating banjo-style swivel. The outlet can point in any direction (360°), making complex, dynamic routing in tight spaces manageable.
Technical FAQ
What is the difference between PSA and PSL?
It is purely a matter of geometry. PSA is Straight (Inline), while PSL is an L-shaped Elbow. Their internal throttling mechanisms are identical; base your choice entirely on your tubing approach angle.
Is the PSS "Universal" type the best option?
It offers the most convenience because the head rotates 360°, allowing you to position the tube release button exactly where needed. The trade-off is that the swiveling head can be accidentally bumped out of position more easily than the rigid PSL body.
How do I choose the correct control type?
You must specify Meter-Out (restricting exhaust air) for standard double-acting cylinders to ensure smooth motion, or Meter-In (restricting supply air) for single-acting cylinders or vertical load applications.
Uncompromising Precision
The AirTAC PSA/PSL/PSS Stainless Series proves that engineers do not have to sacrifice precision to gain durability. Featuring drop-proof needles, pre-coated threads, and highly adaptable geometries, they are a direct, drop-in upgrade for environments where standard valves deteriorate. Whether battling salt spray or adhering to strict hygiene codes, these stainless valves ensure your automation runs smoothly, cleanly, and reliably.