Images are representations only.
B-Series Hydraulic Switch
Brand: Ashcroft IncThe Ashcroft® 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 NACE and Fire-safe applications.
Features- Adjustable setpoints 15 to 100% of range
- Fixed or limited adjustable deadband
- Wide selection of switch elements
- Explosion proof enclosure provides uncompromising protection
- Special designs for NACE & fire applications
- SIL 3 Capable (B and D series only)
Specifications
Brand
Environmental Protection
- B4 / Hydraulic & B7: IP66
- B4 / Hydraulic: NEMA 4X
- Explosion-proof
- IP54
- NEMA 13
- NEMA 3
- NEMA 4
- Watertight
Enclosure, Body Material
- 316 Stainless Steel
- Epoxy Coated Aluminum
Repeatability
- ± 1 % of Full Range
Seat / Seal Material
- Seal: 316L Stainless Steel
- Seal: Buna-N
- Seal: Monel
- Seal: Teflon
- Seal: Viton
NPT Connection
- 1/2” NPT Female
- 1/2” NPT Male
- 1/4” NPT Female
- 1/4” NPT Male
Approvals & Certifications
- SIL 3
- ATEX Sira 02-ATEX-1391X
- CE
- CSA (C,US)
- Ex II 2 GD Ex d IIC T6 Gb Ex Tb IIIC T85° C Db Ta = -20° to 60° C
- FM
- IEC
- SIRA
- UL (C,US)
Set Point - Increasing
- bar: 68.9 to 517.1
- kPa: 6,895 to 51,710
- psi: 1,000 to 7,500
Ambient Temperature Range
- -19° to 65° C (-20° to 150° F)
System Pressure
- bar: 68.9 to 517.1
- kPa: 6,895 to 51,711
- psi: 1,000 to 7,500
Switch Type
- DPDT
- SPDT
Mounting
- 2” Pipe Mounting Bracket
- Pilot Light Top Mounting
- Wall Mounting Bracket
Set Point - Decreasing
- bar: 68.9 to 517.1
- kPa: 6,895 to 51,710
- psi: 1,000 to 7,500
O-Ring Material
- Viton
Pressure Type
- Differential
- Vacuum
Diaphragm Material
- Buna-N
- Monel
- Stainless Steel
- Teflon
- Viton
Name Plate, Tag Material
- Stainless Steel
Process Temperature
- Buna-N or Teflon Diaphragm: -18° to 66° C (0° to 150° F)
- Stainless Steel or Monel Diaphragm: -18° to 149° C (0° to 300° F)
- Viton Diaphragm: -6° to 148.9° C (20° to 300° F)
Adjustment Type
- Set Point Adjustment
- Industrial Market: Boilers & Burners
- Industrial Market: Degreasers
- Industrial Market: Evaporators
- Industrial Market: Food Processing
- Industrial Market: Ground Support Equipment
- Industrial Market: Heating & Air Conditioning
- Industrial Market: Hydraulic & Lubrication Systems
- Industrial Market: Marine Equipment
- Industrial Market: Pumps, Turbines & Compressors
- Industrial Market: Recovery Systems
- Industrial Market: Reverse Osmosis Systems & Filters
- Industrial Market: Specialized OEM Equipment
- Chemical & Petrochemical
- Offshore Oil Rigs
- Power Plants
- Pulp & Paper Mills
- Steel Mills
- Water & Sewage Treatment Facilities
