The Ashcroft® D4 differential pressure switch is designed for use on most applications requiring reliability and long-cycle life where monitoring of differential pressure is required. Ideal for satisfying requirements for differential pressure control, shutdown or alarm operations.
Process Market:
Offshore Oil Rigs
Chemical and Petrochemical Plants
Pulp and Paper Mills
Power Plants
Steel Mills
Water and Sewage Treatment Facilities
Industrial Market:
Pumps, Compressors and Turbines
Boilers and Burners
Degreasers and Evaporators
Recovery Systems
Reverse Osmosis Systems / Filters
Food Processing
Ground Support Equipment
Hydraulic and Lubrication Systems
Heating and Air Conditioning
Marine Equipment
Specialized OEM Equipment
Setpoint
Single setpoint - Factory set or field adjustable
Setpoint Repeatability (Accuracy)
±1% of span (Additional setpoint shift of ±1% of range per 50°F from initial setpoint set at 70°F typical)
Enclosure Ratings
NEMA 4X / IP66
Enclosure Material
Epoxy coated aluminum
Diaphragm/Actuator Material
Buna-N®, Teflon®, Viton®, 316L stainless steel, or Monel®
Pressure Connection
1/4 NPT Female and 1/2 NPT Male Combination
1/4 NPT Female, 1/2 NPT Female,
Electrical Termination
¾ NPT Female (STD.)
3/4 x 1/2 NPT Female reducing bushing (OTP.)
Ambient Temperature Range
-20°F to 150°F (-29°C to 65°C)
All units calibrated at 70°F
Pressure Ranges
30 in. H2O differential thru 600 psid
Process Temperature
0°F to 150°F (Buna N or Teflon diaphragm)
0°F to 300°F (Stainless steel or Monel diaphragm)
20°F to 300°F (Viton diaphragm)
Deadband
Fixed or limited adjustable
