
MD Series
Rotary Valve for Metering, Feeding and Airlock ApplicationsFor long-term savings, ACS designed this valve to reduce total lifecycle maintenance requirements. The MD Series housings are cast in North America and CNC-machined to precise tolerances, eliminating axial shaft movement, seal leakage, and shortened bearing life.
Features & Benefits:
- Available in 7 heights, from 7 3/8"H to 23 1/2"H; and 7 flange diameters from 4" to 16".
- 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.
Options:
- 304 or 316 cast stainless steel valve housing.
- RotorRail™ feature provides tool-less access to rotor and internal surfaces; speeds cleaning and inspection; ensures fast, accurate rotor and endplate re-alignment.
- 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, 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.) | |||||||||||
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4 | 2 | 8 | 12 | 15 | 18 | 21 | 24 | 27 | 30 | 33 |
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 | |
1 | 5 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | ||
Rotor Speed (RPM) |
Customizations: MD Series
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Accessories









Specifications
Videos

Watch a quick 3D demonstration of material flow and pocket fill in an MD series rotary airlock valve. The video is silent.

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.

We're facing our critics head on.

Learn the fundamentals of airlock performance, how to minimize air leakage and how improve efficiency.

Choosing the right rotary valve can improve your productivity. Choosing the wrong one can do the opposite.

The Quick Clean feeder is easy to disassemble and reassemble, in as little as 2 minutes.

Brochures

The ACS MD Series Valve: no more fitting squares into circles
Put your own spin on the completely customizable MD Series valve. With an endless combination of adjustable features, and a universal ANSI class 150 flange bolt pattern, this valve is perfect for industries requiring round flange outlets.
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