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B-Series NEMA 4X Pressure Switch
- Special designs for UL fuel and steam limit control
- Adjustable setpoints from 15%-100% of range
- Fixed or limited adjustable deadband
- Wide selection of switch elements
- Stainless Steel, Buna, Viton, Teflon and Monel diaphragms available for compatibility
- Internal setpoint locking screw
- SIL3 Capable
- FM, UL, CE, CRN and 3A approved
- RoHS Compliant
- NSF-61 Compliant
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Description
Description

The B4 pressure switch is designed for use in virtually all industrial and OEM applications. Providing reliability and long-cycle life, it is ideal for satisfying requirements for pressure control, shutdown or alarm operations. Special designs are available to meet boiler/burner, NACE and fire-safe applications.
Specifications
Setpoint
Single setpoint – Factory set or field adjustableSetpoint 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 / IP66Enclosure Material
Epoxy coated aluminiumDiaphragm/Actuator Material
Buna-N®, Teflon®, Viton®, 316L stainless steel, or Monel®Pressure Connection
¼ NPT Female (STD.)
½ NPT Female, ¼ NPT Female & ½ NPT Male combo (OPT.)Electrical Termination
¾ NPT Female (STD.)
3/4 x 1/2 NPT Female reducing bushing (OTP.)Ambient Temperature Range
–20°F to 150°F (–28°C to 65°C) All units calibrated at 70 °FDeadband
Fixed or limited adjustablePressure Ranges
Vacuum to 3,000 psiProcess 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)

