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  Differential Pressure Switches
 

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Model/Description Enclosure Switch Function
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D400 - General purpose switches for most industrial and process applications  Watertight epoxy-coated aluminum NEMA 4, 4X, IP66  Single setpoint, fixed deadband, SPDT or (2) SPDT contacts 
D700 - Ashcroft 700 series has been developed for most applications found in process plants  Explosion proof, NEMA Type 7/9, IP66  Single setpoint, fixed deadband, SPDT or (2) SPDT contacts 
GD - Stainless Steel enclosure offers greater corrosion protection; recommended for food plants, offshore rigs and paper mills  Watertight 316 stainless steel NEMA 4, 4X, IP65  Single or dual setpoint, fixed or adjustable deadband, SPDT or (2) SPDT contacts 
LD - General purpose switches for most industrial and process applications  Watertight epoxy-coated aluminum NEMA 4, 4X, IP66  Single or dual setpoint, fixed or adjustable deadband, SPDT or (2) SPDT contacts 
PD-N4 - General purpose switches with dual chamber design for added safety  Watertight epoxy-coated aluminum NEMA 4, 4X or explosion-proof NEMA 7/9, IP66  Single or dual setpoint, fixed or adjustable deadband, SPDT or (2) SPDT contacts 
PD-N7 - General purpose switches with dual chamber design for added safety  Watertight epoxy-coated aluminum NEMA 4, 4X or explosion-proof, NEMA 7/9, IP66  Single or dual setpoint, fixed or adjustable deadband, SPDT or (2) SPDT contacts