Ashcroft B Series Pressure Switch

Watertight NEMA 4 or explosion proof NEMA 7 enclosure with optional welded design.

Ashcroft B400 Series Pressure Switch
Ashcroft B Series Pressure Switches B700

Starting at $249.09

Effective March 12th, 2025 Ashcroft has added a 4% surcharge to this product. The surcharge will appear as a separate line item on the order

Effective April 28th, 2025 Ashcroft has added a 6% surcharge to this product. The surcharge will appear as a separate line item on the order.

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Manufactured

By Ashcroft

Includes

FREE Ground Shipping on orders of $1,000 or more
FREE Lifetime Tech Support

Availability

Some models in stock. View available part numbers.

Product Manual Product Specs (3 Files)

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

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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.

Ashcroft B Series Pressure Switch Applications

Pumps
Compressors
Washers
Filters
Degreasers
Evaporators
Recovery systems,
Food processing
Ground support equipment
Reverse osmosis systems
Heat exchangers
Hydraulic systems
Lubrication systems
Chemical and petrochemical plants
Offshore oil rigs
Water and sewage treatment plants
Corrosive environments

Spec Sheets

Manuals

Ashcroft B400 / B700 Series Pressure Switch Manual PDF (328 KB)

Other

Links

All possible part numbers

Ashcroft 80 Wafer Isolation Rings

360 degree sensing flexible inner-liner, no process deadleg, 2 to 20in nominal pipe size.

Starting at $440.06

Ashcroft V01 Gauge Valve

Isolates process from instrument assembly, 316L stainless steel construction, 6,000 psi max pressure.

Starting at $121.30

Ashcroft V01 Block and Bleed 2-Valve Manifold

Isolates and bleeds the process from instrument assembly, 316L stainless steel construction.

Starting at $159.61

Ashcroft V02 Block and Bleed 2-Valve Manifold

Isolates and bleeds the process from instrument assembly, 316L stainless steel construction.

Starting at $254.11

Ashcroft V01 3 Valve Manifold

Isolates each port and equalize pressure for instrument maintenance, 316L stainless steel construction.

Starting at $223.46

Ashcroft 81 Bolt Thru Isolation Ring

Low-maintenance protection for gauges, switches and transducers from contact with process media, for 1 to 10-inch pipe sizes.

Starting at $786.73

Ashcroft V01 5 Valve Manifold

Isolate and bleed the process for each port as well as equalize pressure for instrument maintenance.

Starting at $319.24

Ashcroft V02 Direct & Remote Mount Three-Valve Manifolds

Isolates each port and equalizes pressure for instrument maintenance, 316L stainless steel construction.

Starting at $332.01

Ashcroft V03 3 Valve Manifold

3-valve manifolds isolate each port and equalize pressure for instrument maintenance.

Starting at $230.80

Ashcroft 82 Threaded Isolation Ring

Barrel-style isolation device used on threaded piping systems to protect measuring instruments from contact with process media.

Starting at $418.48

Ashcroft V02 Direct & Remote Mount 5 Valve Manifold

5-valve manifolds isolate and bleed the process for each port as well as equalize pressure for instrument maintenance.

Starting at $619.24

Ashcroft V02 Low Pressure Ball Valve

Floating ball design provides bi-directional isolation, anti-blowout stem design, 1000 psi max pressure rating.

Starting at $57.45

Ashcroft V02 High Pressure Ball Valve

Floating ball design provides bi-directional isolation, anti-blowout stem design, 6092 psi max pressure.

Starting at $395.84

Part Number	Model	Units	Switch Element (SPDT)	Range	Price	Available
B450BXFS60# Show Full Configuration	Pressure switch	PSI	Variable deadband	60 psi	$296.73	1 in stock

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