Data Sheet

The Ashcroft® APA and APS watertight miniature pressure switches are designed for pressure control in harsh applications. Its design allows easy integration into custom equipment or systems. This model is ideal for pressure alarm, shutdown or control where size or compatibility is a consideration.

Key Features:

• 316SS enclosure provides uncompromising protection
• Wide operating temperature (-40°C to 100°C)
• Factory set or field adjustable setpoint
• Expanded selection of pressure and electrical connections
  

Specifications:

• Accuracy: ±2.00% full scale
• NEMA 6 (IP67); 316 stainless steel
• SPDT or DPDT switching models
• Pressure ranges: vacuum to 15,000 psi

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Data Sheet

A-Series Explosion Proof Pressure Switch

The Ashcroft® APA and APS explosion proof miniature pressure switches are designed for pressure control within harsh applications. The explosion-proof construction provides superior protection, while its compact design allows for easy integration into custom equipment or systems. This model is ideal for pressure alarm, shutdown or control within hazardous areas when limited size and process compatibility are needed.

Key Features:

• Compact, 316 stainless steel construction
• Explosion-proof housing provides uncompromising protection
• Wide operating temperature (-40° to 89°C)
• Factory set or field adjustable setpoint
• Expanded selection of pressure and electrical connections
  

Specifications:

• Accuracy: ±2.00% full scale
• NEMA 4X, 7/9 (IP67); 316 stainless steel
• SPDT or DPDT switching models
• Pressure ranges: vacuum to 15,000 psi

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B-Series NEMA 4X Pressure Switch

The 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.

Key Features:

• Adjustable setpoints from 15%-100% of range
• Fixed or limited adjustable deadband
• Wide selection of switch elements and wetted materials
• Internal set point locking screw
  

Specifications:

• Accuracy: ±1.00% full scale
• NEMA 4X (IP66) epoxy coated aluminum enclosure
• Single setpoint
• SPDT or DPDT switching option
  
• Pressure ranges: vacuum to 3,000 psi

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B-Series NEMA 7/9 Pressure Switch

The Ashcroft® B7 NEMA 7/9 pressure switch is designed for use in virtually all industrial and OEM applications. This model provides accuracy, reliability and long-cycle life, while the rugged, explosion-proof housing provides superior protection. Ideal for satisfying requirements for pressure control, safety shutdown or alarm operations in hazardous applications. 

Key Features:

• Explosion-proof enclosure provides uncompromising protection
• Adjustable from 15%-100% of range
• Fixed or limited adjustable deadband
• Wide selection of switch elements and wetted materials
• External locking screw (ATEX / IECEx approval only)
  

Specifications:

• Accuracy: ±1.00% full scale
• NEMA 7/9 (IP66) enclosure
  Epoxy-coated aluminum (standard) 
  316 Stainless steel (option XYW)
  
• Single setpoint
• SPDT or DPDT switching option
  
• Pressure ranges: vacuum to 3,000 psi

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GP-Series NEMA 4 Pressure Switch

The Ashcroft® GP pressure switch is designed for use on tough applications requiring a 316L SS enclosure. The simple design allows for easy field installation and calibration, while proven technology ensures a highly reliable, safe and accurate switch. Ideal for pressure control, safety shutdown or alarm operations.

Key Features:

• Wide selection of switch elements and wetted materials
• Choice of process connections
• Fixed or adjustable deadbands; adjustable setpoints from 15%-100% of range

Specifications:

• Accuracy: ±1.00% full scale
• NEMA 4X (IP65) 316L stainless steel enclosure
• Single or dual set points
• Pressure ranges: vacuum to 3,000 psi

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F-Series NEMA 7 Pressure Switch

The Ashcroft® F7 pressure switch was designed for use in harsh or hazardous applications where shutdown, control or alarms are required. Its slim profile allows for easy installation and retrofits with many similar models. Ideal choice for satisfying hazardous and corrosive environments.

Key Features:

• Explosion-proof enclosure with hermetically sealed switch elements provide added safety and reliability
• Wide selection of switch elements wetted materials
• Multiple process connections available
• Adjustable setpoints from 15%-100% of range

Specifications:

• Accuracy: ±1.00% full scale
• NEMA 3,4, 7 & 9 (IP66) anodized aluminum enclosure
• Single setpoint
• Pressure ranges: vacuum to 4,000 psi
• Fixed deadband
• 1/2" NPT male conduit connection
• SPDT or DPDT switching option

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LP-Series NEMA 4 Pressure Switch

The Ashcroft® LP pressure switch is designed for use on applications requiring high reliability, safety and accuracy. Its straight forward design allows for easy field installation and calibration. The LP pressure switch is ideal for pressure control, safety shutdown or alarm operations.

Key Features:

• Wide selection of switch elements and wetted materials
• Multiple process connections available
• Adjustable setpoints from 15%-100% of range
• Fixed or adjustable deadbands

Specifications:

• Accuracy: ±1.00% full scale
• NEMA 4X (IP65) aluminum enclosure
• Single or dual set points

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NPI-Series NEMA 4 Pressure Switch

The Ashcroft® NPI indicating pressure switch was designed to satisfy challenging applications needing high cycle rates with switch functionality. This design incorporates proven thin film technology to trigger a high quality relay, making this an extremely reliable and long lasting switch. This switch is ideal for use with pressure control, shutdown or alarm operations.

Key Features:

• Digital Indicating Display
• Incorporates thin film sensor technology
• Multi-turn potentiometers allow easy setpoint and deadband adjustments
• Switch status indication
• SPDT 10 amp relay
  

 Specifications:

• Accuracy: ±0.50% full scale
• NEMA 3, 4, 4X and 13 (IP66); aluminum enclosure
• Single setpoint
• Pressure ranges: 60 to 20,000 psi
• Select process connections
• Adjustable deadband (as low as 0.5% of full scale)

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NPA-Series NEMA 4 Pressure Switch

The Ashcroft® NPA watertight pressure switch was designed to satisfy challenging applications needing high cycle rates with switch functionality. This design incorporates proven thin film technology to trigger a high quality relay, making this an extremely reliable and long lasting switch. This switch is ideal for use with pressure control, shutdown or alarm operations.

Key Features:

• Multi-turn potentiometers allow easy setpoint and deadband adjustments
• Switch status indication
• SPDT 10 amp relay

Specifications:

• Accuracy: ±0.50% full scale
• NEMA 3,4, 4X and 13 (IP66); aluminum enclosure
• Single setpoint
• Pressure ranges: 60 to 20,000 psi
• Multiple process connections available
• Adjustable deadband (as low as 0.5% of full scale)

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NPA-Series NEMA 7 Pressure Switch

The Ashcroft® NPA pressure switch is housed in a NEMA 7/9 explosion proof enclosure to satisfy challenging applications needing high cycle rates with switch functionality. This design incorporates proven thin film technology to trigger a high quality relay, making this an extremely reliable and long lasting switch. This switch is ideal for use with pressure control, shutdown or alarm operations.

Key Features:

• Multi-turn potentiometers allow easy setpoint and deadband adjustments
• Switch status indication
• SPDT 10 amp relay

Specifications:

• Accuracy: ±0.50% full scale
• NEMA 3, 4, 4X, 7, 9 and 13 (IP66); aluminum enclosure
• Single set point
• Pressure ranges: 60 to 20,000 psi
• Select process connections
• Adjustable deadband (as low as 0.5% of full scale)

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PP-Series NEMA 7 Pressure Switch

Key Features:

• Rugged enclosure
• Choice units of measure
• Integral transmitter
• PLUS!™ Performance (option) dampens vibration, shock and pulsation effects; Provides liquid-fill performance in a dry gauge with added cost benefit  

Specifications:

• Accuracy: 0.50% span
• Dial size: 100mm (4") 
  
• Bourdon Tube / socket: 316L stainless steel / 17-4 PH
• Housing: IP65 
  
• Case: open-front; stainless steel
• Pressure ranges: Vacuum to 20,000 psi

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