Features & Benefits:

  • Pre-fit Performance™ housings provide all of the in-use advantages built into every ACS valve, plus the assurance of precise alignment and fast installation when replacing comparable Prater-Sterling valves.
  • Available in round or square flange designs.
  • Available in 4 heights, from 10"H to 18 1/8"H; and 3 flange sizes from 6"H to 12"H.
  • 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.
  • Large shaft diameter eliminates rotor deflection; reduces rotor tip wear and bearing seal leakage.
  • Easily manages pressure differentials up to 15 PSIG; 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:

  • RotorRail™ design enables tool-less access to the rotor and all internal surfaces of the housing without time-consuming disassembly or removal from service.
  • 304 or 316 cast stainless steel valve housing.
  • No. 4 finish on internal product contact surfaces of housing, and all rotor surfaces.
  • Interior coating: hard chrome, tungsten, nickel, and epoxy.
  • Rotor types: closed-end, shallow-pocket, adjustable-tip, and Teflon® coated.
  • Adjustable rotor tip types: EPDM rubber, polyurethane, hardened steel, and stainless steel.
  • Shaft seal types: ACST-4™ glandless Teflon® shaft seal, and packing gland.
  • 6-vane or 10-vane rotor.
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
1 5 8 10 12 14 16 18 20 22
Rotor Speed (RPM)

Customizations: P Series

Rotors

Adjustable Polyurethane Tip Rotor Adjustable Polyurethane Tip Rotor

Accessories

Discharge Finger Guard for Square Valves Discharge Finger Guard 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)

Specifications

Inlet/Outlet Flange Sizes: 3 sizes from 6" to 12"
Material of Construction: Cast Iron, Stainless Steel
Pressure Differential: Up to 22 PSIG
High Temperature Range: 750°F
Industries
Systems
Types

Videos

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.
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.
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.
P Series rotary valve with round flange, overhead view
Explore in our 3D gallery.
CI valves with ruler lines.
Try the valve sizing tool