Features & Benefits:

  • Available in 11 heights, from 10"H to 44"H; and 10 square-flange sizes from 6" to 26".
  • Valve housing cast in North America; ensures superior strength and solidification of housing's metallurgy.
  • CNC-machined components and housing provide precision tolerances; eliminates axial shaft movement, extends maintenance cycles.
  • Outboard bearing design protects bearings in high-temperature and high-PSIG applications; removes bearings from direct path of damaging contaminants.
  • Easily manages pressure differentials up to 15 PSIG; with super-duty series up to 22 PSIG.
  • Excellent performance in high-temperature applications up to 750°F.
  • Cast iron housing.
  • 8-vane rotor with beveled tips and sides.
What to do if your valve becomes uncompliant (Because it will)

Options:

  • 304, 304L, 316, 316L, or 2205 cast stainless steel valve housing.
  • No. 4 finish on internal product contact surfaces of housing, and all rotor surfaces.
  • Interior coatings: hard chrome, tungsten, nickel, and epoxy.
  • Rotor types: closed-end, metering, shallow-pocket, adjustable-tip, and Teflon®-coated.
  • Adjustable rotor tip types: EPDM rubber, polyurethane, mild steel, AR400, stainless steel, and bronze.
  • Shaft seal types: ACST-4™ glandless Teflon® shaft seal, and packing gland.
  • Valve housing vent ports.
  • Shaft seal and rotor pocket air purge.
  • 6-vane, 10-vane, or 12-vane rotor.
  • Custom drive packages.
  • Application-specific accessories: blow-through adapter, shear plate deflector, surge hopper, motion speed switch assembly.
Rotary Valve Capacity (Cubic Feet/Hr.)
Valve Size 6 6 30 48 60 72 84 96 108 120 132
8 12 60 96 120 144 168 192 216 240 264
10 24 120 192 240 288 336 384 432 480 528
12 45 225 360 450 540 630 720 810 900 990
14 66 330 528 660 792 924 1056 1188 1320 1452
16 84 420 672 840 1008 1176 1344 1512 1680 1848
16T 120 600 960 1200 1440 1680 1920 2160 2400 2640
18 162 810 1296 1620 1944 2268 2592 2916 3240 3564
22 276 1380 2208 2760 3312 3864 4416 4968 5520 6072
24 384 1920 3072 3840 4608 5376 6144 6912 7680 8448
26 540 2700 4320 5400 6480 7560 8640 9720 10800 11880
1 5 8 10 12 14 16 18 20 22
Rotor Speed (RPM)

Customizations: CI Series

Rotors

Adjustable Polyurethane Tip Rotor Adjustable Polyurethane Tip Rotor Adjustable Rotor Adjustable Rotor Bolt-On Serrated Tips Rotor Bolt-On Serrated Tips Rotor Closed End Rotor Closed End Rotor Flex Tip Style Rotor Flex Tip Style Rotor Helical Metering Rotor Helical Metering Rotor Helical Rotor Helical Rotor Metering Rotor Metering Rotor Open End Rotor Open End Rotor Radius Pocket Rotor Radius Pocket Rotor Reduced Volume Rotor Reduced Volume Rotor Staggered Pocket Rotor Staggered Pocket Rotor

Kits

Combination Shaft Seal and Rotor Pocket Air Purge Kit Combination Shaft Seal and Rotor Pocket Air Purge Kit Rotor Pocket Air Purge Kit Rotor Pocket Air Purge Kit Shaft Guard Kit Shaft Guard Kit Shaft Seal Air Purge Kit Shaft Seal Air Purge Kit Zero Speed Switch Kit Zero Speed Switch Kit

Accessories

Adjustable Inlet Shear Protector: Spool Style for Square Valves Adjustable Inlet Shear Protector: Spool Style for Square Valves Discharge Blow-Through Adapter for Square Valves Discharge Blow-Through Adapter for Square Valves Discharge Finger Guard for Square Valves Discharge Finger Guard for Square Valves Inlet Shear Protector: Half-Moon Style for Square Valves Inlet Shear Protector: Half-Moon Style for Square Valves Inlet Shear Protector: Spool Style for Square Valves Inlet Shear Protector: Spool Style for Square Valves Inlet Shear Protector: Spool Style for Square Valves, Vented Inlet Shear Protector: Spool Style for Square Valves, Vented Inlet Shunt with Tip Cleaner for Square Valves Inlet Shunt with Tip Cleaner for Square Valves Maintenance Slide Gate for Square Valves (Air Operated) Maintenance Slide Gate for Square Valves (Air Operated) Maintenance Slide Gate for Square Valves (Manually Operated) Maintenance Slide Gate for Square Valves (Manually Operated) Vent Box for Square Valves Vent Box for Square Valves

Specifications

Inlet/Outlet Flange Sizes: 11 sizes from 6" to 26"
Material of Construction: Cast Iron, Stainless Steel
Pressure Differential: Up to 20 PSIG
High Temperature Range: 750°F
Industries
Systems
Types

Videos

Why is rotor maintenance so important?
Why is rotor maintenance so important?

Rotor tips wear down over time, causing issues with material flow. Our video illustrates why rotor maintenance is so critical to the overall efficiency of your rotary airlock valve.
Ordering valves from ACS: How does it work?
Ordering valves from ACS: How does it work?

It's easy to order a new valve from ACS and have it get to you. Here's how the process works from start to finish.
Drive Side Endplate Removal for ACST-4 Seals
Drive Side Endplate Removal for ACST-4 Seals

Need a guide to removing the drive side endplate on your ACST-4 seals? Watch a quick visual breakdown of the process. The video is silent.
ACS Valves: It Will Fit
ACS Valves: It Will Fit

Our valves will fit literally anywhere. Watch the video to find your industry.
Rotor Assembly Tolerance Check
Rotor Assembly Tolerance Check

Keep valves compliant by ensuring rotor-to-housing clearance stays below 0.0079.
What you need to know about DHAs and NFPA 652
What you need to know about DHAs and NFPA 652

Every material is different, so every valve has to be designed to handle each combustible dust in order to prevent deflagration.
Yes, you have to remove our endplates to replace the shaft seal
Yes, you have to remove our endplates to replace the shaft seal

We're facing our critics head on.
Understanding Airlocks: The key to increasing ROI
Understanding Airlocks: The key to increasing ROI

Learn the fundamentals of airlock performance, how to minimize air leakage and how improve efficiency.
Why you can't afford an unreliable valve
Why you can't afford an unreliable valve

Choosing the right rotary valve can improve your productivity. Choosing the wrong one can do the opposite.
ACS Valves Rotary Airlock Valve Test Center
ACS Valves Rotary Airlock Valve Test Center

Our test center is designed to test your materials to determine which airlock valve/feeder is best suited for your application.
ACS Valves Standard Valve Assembly
ACS Valves Standard Valve Assembly

This simple rotary valve re-assembly sequence shows the significant labor and downtime savings associated with this rotary valve design
ACS Valves Airlock Testing Process
ACS Valves Airlock Testing Process

Each rotary valve goes through a thorough inspection process before leaving ACS.
ACS Valves Vertical CNC Machining Center
ACS Valves Vertical CNC Machining Center

Production operations include CNC machining of rotor blades, rotor adjustable tips, slide-gate parts, inspection panels, and metering-s
ACST-4 Glandless Shaft Seal Removal Sequence
ACST-4 Glandless Shaft Seal Removal Sequence

ACST-4 Glandless Teflon Shaft Seal can be easily removed and reassembled in just a few minutes using basic hand tools.
ACST-4 Glandless Shaft Seal versus Packing Gland Seals
ACST-4 Glandless Shaft Seal versus Packing Gland Seals

Eliminates the need for conventional packing gland-style shaft seals.
CI Series rotary valve, side view
Explore in our 3D gallery.
CI valves with ruler lines.
Try the valve sizing tool

Brochures

The ACS CI Series Valve: One valve to rule them all

The ACS CI Series Valve: One valve to rule them all

With ACS CI Series valves, expect endless combinations of features and options for your application, your material and for your industry. Check out the options in this brochure.

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