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B-Series NEMA 4 Pressure 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.
Specifications:
- Accuracy: ±1.00% full scale
- NEMA 4X (IP66) aluminum enclosure
- Single setpoint
- Pressure ranges: vacuum to 3,000 psi
- SPDT or DPDT switching option
- Adjustable setpoints from 15%-100% of range
- Fixed or limited adjustable deadband
- Wide selection of switch elements and wetted materials
Specifications
Brand
Approvals & Certifications
- CSA
- FM
- UL
System Pressure
- bar: 0 to 6,895
- Inches Hg: -30 to 0
- Inches WC: -30 to 150
- kPa: 0 to 689,476
- psig: 0 to 12,000
Electrical - Free Leads
- 16” (41 cm) Free Leads
Pressure Range
- bar: 1.034 to 206.8
- Inches WC: -15 to 150
- kPa: 103.4 to 20,680
- psi: 15 to 3,000
Mounting
- 2” Pipe Mounting Bracket
- Wall Mounting Bracket (”H 2O)
Options
- Fungus Proofing
- Paper Tag
- Stainless Steel Tags
Environmental Protection
- IP54
- IP66
- NEMA 13
- NEMA 3, 4, 4X, 13 / IP54, 66
- NEMA 4
- NEMA 4X
Adjustment Type
- Factory Set (Pre-Set)
- Field Adjustable
Diaphragm Material
- Buna-N
- Monel
- Stainless Steel
- Teflon
- Viton
O-Ring Material
- Buna-N
- Teflon
- Viton
Electrical Rating
- 1 A at 125/250 Vac
- 10 A, 125 / Vac or DC, 1/8 hp 125 Vac or DC
- 11 A, 125/250 Vac, 5 A, 30 Vdc
- 15 A, 125/250 Vac
- 15 A, 125/250/480 Vac, 1/2 A, 125 Vdc, 1/4 A, 250 Vdc
- 5 A at 125/250 Vac
Operating Temperature
- -29° to 66° C (-20° to 150° F)
Switch Type
- DPDT
- SPDT
Proof Pressure
- bar: 827 to 6,895
- kPa: 82,737 to 689,476
- psig: 20 to 12,000
Set Point - Increasing
- -30” Hg to 3,000 psig
- bar: 0 to 206.8
- Inches Hg: -30 to 0
- Inches WC: -30 to 150
- kPa: 0 to 20,680
- psig: 0 to 3,000
NPT Connection
- 1/2” NPT Female
- 1/2” NPT Male
- 1/4” NPT Female
Deadband, Approximate
- bar: 0.01 to 22.68
- kPa: 1.38 to 2,268
- psig: 0.2 to 329
Electrical Connectors
- 3/4” NPT Female
- M20 Male
Burst Pressure
- bar: 2.4 to 1,241
- kPa: 241.32 to 124,105
- psig: 35 to 18,000
Enclosure, Body Material
- 316 Stainless Steel
- Aluminum
Enclosure Finish
- Epoxy Coated
Electrical Contacts
- Gold
Set Point - Decreasing
- -30” Hg to 3,000 psig
- bar: 0 to 206.8
- Inches Hg: -30 to 0
- Inches WC: -15 to 150
- kPa: 0 to 20,680
- psig: 0 to 3,000
Element
- Ammonia Service
- Dual Elements
- General-purpose
- Heavy Duty AC
- Heavy Duty DC
- Hermetic Seal Switch, General-purpose
- Hermetic Seal Switch, Narrow Deadband
- Hermetic Seal, Gold Contacts
- High Temperature 149° C (300° F)
- Low Level (Gold Contacts)
- Manual Reset on Decreasing Pressure
- Manual Reset on Increasing Pressure
- Narrow Deadband
- Sealed Environment Proof
- Corrosive Environments
- Offshore Platforms, Pipelines
- Power Plants
- Pulp & Paper
- Refining, Chemical, Petrochemical
- Steel Mills
- Water Treatment
