Clark Cooper ER Rotary Valves

ER Valves

Rotary Valves

Clark Cooper’s ER Series are rotary valves offered in a range of pipe sizes from ½” to 6” NPT. The ER series offers a distinct advantage for corrosive fluids because the materials for all wetted parts can be tailored for the specific application. It includes a diverse line up of materials including Naval Bronze, Hastelloy and Monel, as well as more common materials like Stainless Steel and Commercial Bronze. The ER series requires no minimum differential pressure for opening, and can handle fluid temperatures up to 550° F. These rotary valves are extremely durable due to their robust design and are often used for used for dirty, viscous, and extremely corrosive fluids. The ER valves (up to 3") are nationally CRN certified for all Canadian provinces. Additionally, the ER series is available in 2-way valves and 3-way diverting valves.

ER Valves are best if you need...

  • 3rd party certification required for a 3” or larger valve (UL/CSA)
  • Very corrosive fluids or gases
  • Larger pipe sizes (4” or 6”)
  • Combination of options, i.e., position switches AND manual override
  • Various trip options, i.e., trip on loss of power, fusible link (heat actuated), trip/electrical
  • High Temperature Rating 550° F
  • Watertight, submersible or explosion proof solenoid enclosures

Clark Cooper EH70 CRN

To learn more, choose one of the flow paths below:

Two Way Valve
Clark Cooper ER Rotary 2 way Valves
Three Way Valve
Clark Cooper ER Rotary 3 way Valve

Options and Accesories:

Below are options customers commonly request when ordering an ER series valve. PDF IconDownload ER Series - Model Number Breakdown

* Not all combinations are possible.  Please consult Clark Cooper before ordering.

Operation

  • Pilot or Direct Operated
  • Trip/Electrical
  • Heat Activated

Connection Size

  • 1/2" - 6"

Accessories

  • Single Switch
  • Single Sw Exp Prf
  • 2 Switches
  • 2 Sw Exp Prf
  • Man. Override w/Lock
  • Terminal Box
  • High Temp. Const. (over 550° F)
  • Vertical Pipe (design req)

Body Material

  • Carbon Steel
  • 316 SS
  • 304 SS
  • Bronze
  • Monel
  • Alloy 20
  • Hastelloy
  • B61 Bronze

Piston Material

  • 316 SS
  • 303 SS
  • Monel
  • Alloy 20
  • Hastelloy
  • 420 SS

Seat Material

  • 316 SS
  • Monel
  • Alloy 20
  • 440 C
  • Hastelloy
  • 304 SS

Disc Material

  • Metal-to-Metal
  • PTFE
  • Viton
  • Buna-N
  • Silicone
  • EPDM
  • Stellite

Connection Type

  • NPT
  • Socket Weld
  • Butt Weld
  • 150# MIL Flange
  • 300# MIL Flange
  • MIL Union
  • 150# ANSI Flange
  • 300# ANSI Flange
  • 600# ANSI Flange
  • Comm. Union
  • 150# FF Flange
  • 300# FF Flange
  • Straight Thread
  • Pipe Thread