Part# B428TXFM30IW

Description: ASHCROFT PRESSURE SWITCH, B400, HIGH MANUAL RESET, 0-30″W.C. NEMA4X, CSA, FM, UL, TEFLONSEAL

THIS PRODUCT REQUIRES ADDITIONAL TIME FOR SHIPMENT, EXPEDITED OPTIONS MAY BE AVAILABLE.CONTACT USVIA PHONE OREMAILTO REQUEST MORE INFORMATION ON AVAILABILITY.

For More Options:

Ashcroft B Series pressure switches are designed to satisfy most switch requirements. Materials of construction have been selected for long life. A wide variety of precision switch elements are available to meet every application requirement, including hermetically sealed contacts for added reliability and safety. Special designs are available for fire safety, NACE, limit control and other more stringent requirements. Simplicity and ease of use are stressed to improve reliability of the installation.

Pressure and differential pressure switches use two different actuators depending on setpoint requirements. For setpoints between 2 and 3000 psi, the simple, rugged diaphragm-sealed piston actuator is used. This design features high reliability and choice of actuator seal materials for virtually every application. An optional welded design is also available for setpoints up to 1000 psi. Differential pressure models use a unique, dual diaphragm-sealed piston design that features very high static operating pressures and small size.

All standard models feature 1 percent of range setpoint repeatability and a minimum of 400 percent of range proof pressures. These standard designs perform well in applications where shock and vibration could be a problem and may be used in conjunction with Ashcroft diaphragm seals in extreme services such as slurries or abrasive process fluids.

Features:

• Single or dual independently adjustable setpoints
• Watertight NEMA 4 or explosion proof NEMA 7 enclosures
• Choice of switch elements for all applications
• Choice of actuator seal
• Setpoints adjustable from 15-100% of range
• UL and CSA listed

Resources:

• Ashcroft B Series Pressure Switches Datasheet
• Ashcroft B400 Series Pressure Switch Quick Specs
  
• Ashcroft B700 Series Pressure Switch Quick Specs
• Ashcroft B400 / B700 Series Pressure Switch Manual
• Ashcroft B700 Series Pressure Switch Wiring Diagram
  
• Ashcroft B Series Pressure Switches Installation
  
• Ashcroft B400 Series Pressure Switch Wiring Diagram
  
• Ashcroft B Series Pressure Switch Nominal Ranges and Deadbands
  
• Ashcroft B Series Pressure, Differential Pressure and Temperature Switch Options

All Options:

Model Basics Options Switch Element Pressure RangesAdditional Options

Basic Options:

Model

• Pressure switch
• Differential pressure switch

Element Type

• Single (SPDT)
• Dual (2 SPDT) (+$69.82)

Enclosure

• Watertight
• Explosion proof

Units

• PSI
• inH2O

Actuator Seal

• Buna-N
• Viton
• Teflon
• Stainless Steel psi ranges to 1000 psi only
• Monel psi ranges to 1000 psi only

Pressure Connection

• Standard; 14 NPT Female
• 716; 20 SAE Female
• 12 NPT Male and 14 NPT Female
• 12 NPT Female

Certified Calibration Chart

• without
• With certified calibration chart

Switch Element (SPDT) Options:

• General purpose (AC/DC)
• Narrow deadband (AC)
• Ammonia service
• Hermetically sealed (AC)
• Heavy duty (AC)
• Heavy duty (DC)
• Sealed environment proof
• High temp 300F ambient
• High limit manual reset
• Low limit manual reset
• Low level (gold) contacts
• Hermetically sealed (AC/DC)
• Hermetically sealed gold contacts
• Variable deadband

Switch Element (Dual SPDT) Options:

• Dual general purpose
• Dual narrow deadband
• Dual sealed environment proof
• Dual high temp 300F ambient
• Dual ammonia service
• Dual hermetically sealed (AC)
• Dual hermetically sealed (AC/DC)
• Dual low level (gold) contacts
• Dual hermetically sealed gold contacts

Option 1:

• None
• XBP – Wall mounting bracket inH2O only
• Chained cover
• CSA Approval for Nema 7 enclosures
• ATEX/IECEx approval on 700 series
• FM approval
• Fungus proofing
• Factory adjusted setpoint (single only)
• High static pressure actuator for H2O ranges
• 34 to 12 reducing bushing
• 6 foot wired leads
• Stainless steel tag
• Paper tag
• 24 VDC pilot light(s) single/dual
• Pilot light(s) top mounted single/dual
• Wire leads potted in conduit single/dual
• 14 NPTF 316 St. St. pressure conn. (inH2O ranges)
• 2 pipe mounting bracket
• Metric conduit connection
• FM approval w/o pilot light
• Weld seal to switch

Option 2

• None
• Wall mounting bracket inH2O only
• Chained cover
• FM approval
• Fungus proofing
• Factory adjusted setpoint (single only)
• High static pressure actuator for H2O ranges
• 34 to 12 reducing bushing
• 6 foot wired leads
• Stainless steel tag
• Paper tag
• 24 VDC pilot light(s) single/dual
• Pilot light(s) top mounted single/dual
• Wire leads potted in conduit single/dual
• 14 NPTF 316 St. St. pressure conn. (inH2O ranges)
• 2 pipe mounting bracket
• Metric conduit connection
• FM approval w/o pilot light
• Weld seal to switch

Ranges Options:

PSI

• 15 psi
• 30 psi
• 60 psi
• 100 psi
• 200 psi
• 400 psi
• 600 psi
• 1000 psi
• 3000 psi
• -30 to 0 inHg
• -30 inHg to 15 psi
• -30 inHg to 30 psi
• -30 inHg to 60 psi

Inches WC

• 10IW – 10 inH2O
• 30 inH2O
• 60 inH2O
• 100 inH2O
• 150 inH2O
• -15 inH2O to 15 inH2O
• -30 inH2O to 30 inH2O