Features

• Low Setpoints

• Highly Accurate

• Simple Design

• High Flow Rates

Body Sizes and End Connection Styles

Cast Iron2-inch (DN 50) body size NPT or 125 FF end connections3-inch (DN 80) or 4-inch (DN 100) body size 125 FF end connections

Steel or Stainless Steel2-inch (DN 50) body size NPT or 150 RF end connections3-inch (DN 80) or 4-inch (DN 100) body size 150 RF end connections

Pressure Registration

Type 66R: Internal (Standard) or ExternalType 66RR: External

Maximum Inlet Pressure

Type 66R: 8 psig (0,55 mbar)Type 66RR: 10 psig (0,69 mbar)

Set Pressure Ranges

Type 66R: 2-inches w.c. to 3 psig (5 to 207 mbar) in six rangesType 66RR: 3-inches w.c. to 3.25 psig (7 to 224 mbar) in seven ranges

Temperature Capabilities

Nitrile: -20 to 180°F ( -29 to 82°C)Fluoroelastomer (FKM): 40 to 300°F (4 to 149°C)

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