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Environmental & Combustion Controls
C437F1037
Pressure Switch, Auto recycle, 1/2 in. wc to 5 1/2 in. wc

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Overview
Pressure or differential pressure limit controls for industrial gas systems.

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Features

• Uses C437 for SPDT Mercury switching.
• Models with pressure range of 1 to 26 in. wc (0.25 to 6.5 kPa)compensate for momentary surges in gas pressure with a restrictive orifice in inlet pressure.
• Impede tampering and provide dust-resistant operation with enclosed setting.
• Increase strength of control diaphragm with Buna-N fiber-reinforced material.
• Clear glass cover allows observation of interior mechanism to aid in setting and checkout.
• Mercury switch provides visual indication of switch position.
Product Specifications  Back To Top
Description Pressure Switch, Auto recycle, 1/2 in. wc to 5 1/2 in. wc
Application Industrial gas system applications for safety shutoff, pressure control, or differential-pressure control.
Operating Range (psi) 0.5 to 5.5 in. wc
Operating Range (kPa) 0.1 to 1.4 kPa
Switch Operation Auto recycle
Switching Action SPST (two), break one and make one on pressure fall
Sensor Element BUNA N Diaphragm
Materials (Case) Die-cast aluminum
Pipe Connections, Main or High Pressure 1/2 in. NPT internal thread
Pipe Connections, Vent or Low pressure 1/8 in. NPT internal thread
Dimensions (in.) 7 3/4 in. high x 6 1/4 in. wide x 3 7/16 in. deep
Dimensions (mm) 197 mm high x 159 mm wide x 87 mm deep
Switch Contact Ratings (120 Vac) 8.0 AFL, 48.0 ALR, 10.0 A resistive
Switch Contact Ratings (120 Vdc) 2.0 AFL, 20.0 ALR, 8.0 A resistive
Switch Contact Ratings (240 Vac) 5.1 AFL, 30.6 ALR, 5.0 A resistive
Switch Contact Ratings (240 Vdc) 1.0 AFL, 10.0 ALR, 4.0 A resistive
Maximum Sustained Operating Pressure (psi) 3.0 psi
Maximum Sustained Operating Pressure (kPa) 20.7 kPa
Pressure Differential (psi) 0.25 in. wc
Pressure Differential (kPa) 0.06 kPa
Differential Type Additive
Temperature Range (F) 32 F to 125 F
Temperature Range (C) 0 C to 52 C
Maximum Ambient Temperature (F) 125 F
Maximum Ambient Temperature (C) 52 C
Electrical Connections Screw terminals
Approvals, Underwriters Laboratories Inc Listed: File No. MP2168, Guide No. MFHX
Approvals, Canadian Standards Association Certified: File No. LR1620, Guide No. 380-W-1.16
Approvals, Factory Mutual Approved: Report No. 22018, 24127, J.I.IF4A3.AF
Approvals, Industrial Risk Insurers Acceptable

Literature and other Resources Download Back To Top
Product Data - (C437E Gas Pressure Switches)
Brochure - (C437D Mercury-Free Control Solutions)
Product Data - (C437D Gas Pressure Switches)
C437E Gas Pressure Switch 6 inch Main(Photo_BW - Web Quality Image)
C437E Gas Pressure Switch 6 inch Main(Photo_BW - Print Quality Image)
C437E Gas Pressure Switch 3 inch Main(Photo_Color - Web Quality Image)
C437E Gas Pressure Switch 3 inch Main(Photo_Color - Print Quality Image)
C437E Gas Pressure Switch 6 inch Main(Photo_Color - Web Quality Image)
C437E Gas Pressure Switch 6 inch Main(Photo_Color - Print Quality Image)
2000 Series Gas/Air Pressure Switch Dimension(LineArt)
2000 Series Gas/Air Pressure Switch Dimension(LineArt - Web Quality Image)
Installation dimensions of the C437 and C637 gas pressure switches, in in. (mm) Dimension(LineArt)
Installation dimensions of the C437 and C637 gas pressure switches, in in. (mm) Dimension(LineArt - Web Quality Image)
2000 Series Gas/Air Pressure Switch Dimension(LineArt)
2000 Series Gas/Air Pressure Switch Dimension(LineArt - Web Quality Image)
Pressure Control for industrial gas systems Main(Photo_BW - Web Quality Image)
Pressure Control for industrial gas systems Main(Photo_BW - Print Quality Image)
Pressure Control for industrial gas systems Main(Photo_BW - Web Quality Image)
Pressure Control for industrial gas systems Main(Photo_BW - Print Quality Image)
Pressure Switch Main(Photo_BW - Web Quality Image)
Pressure Switch Main(Photo_BW - Print Quality Image)
Pressure Switch Main(Photo_BW - Web Quality Image)
Pressure Switch Main(Photo_BW - Print Quality Image)
Pressure Switch Main(Photo_Color - Web Quality Image)
Pressure Switch Main(Photo_Color - Print Quality Image)
Gas Pressure Switch Main(Photo_BW - Web Quality Image)
Gas Pressure Switch Main(Photo_BW - Print Quality Image)
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