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Honeywell L404 Steam PressureTrol

Honeywell L404 Steam PressureTrol

  • $220.49


Provide operating control with automatic limit protection for pressure systems up to 300 psi (2068 kPa).



  • Use with steam, air, noncombustible gases, or fluids non-corrosive to pressure sensing element.
  • Models have snap-acting switching to open or close a circuit on pressure rise.
  • Have adjustable differentials.
  • Adjustments are made by screws on top of case.
  • Mount using 1/4 inch -18 NPT internal pipe threads or surface mount through base of case.
  • Ground screw terminal.


Product Specifications

Application: Provide control of steam, air, non-combustible gases or non-corrosive fluids
Dimensions (in.): 4 27/32 in. high x 4 1/2 in. wide x 3 1/4 in. deep
Dimensions (mm): 123 mm high x 114 mm wide x 83 mm deep
Mounting: 1/4 in. NPT internal thread or surface mount through back of case
Approvals, Underwriters Laboratories Inc.: Listed: File No. MP466, Guide No. MBPR
Approvals, Canadian Standards Association: Certified: File No. LR1620, Guide No. 400-E-O
Electrical Connections: Screw terminals
Contact Ratings: 120 Vac Switch Contact-- 8.0 AFL, 48.0 ALR, 10.0 A resistive; 240 Vac Switch Contact-- 5.1 AFL, 30.6 ALR, 5.0 A resistive
Operating Temperature Range (F): -35 F to +150 F
Operating Temperature Range (C): -37 C to +66 C
Approvals, Swiss RE: Acceptable
Sensor Element: Stainless Steel diaphragm

Differential Type:
Switch Operation: Auto recycle
Switching Action: SPDT snap action, make R-W, break R-B on pressure rise
Pipe Connection: Main or High Pressure--1/4 in. NPT internal thread

Available Models (Pressure Variations):





Operating Range (psi): 2 to 15 psi; 25 psi - Maximum Sustained

Operating Range (kPa): 14 to 103 kPa; 172 kPa - Maximum Sustained

Differential Pressure Range (psi): 2 to 6 psi

Differential Pressure Range (kPa): 14 to 41 kPa

Operating Range (psi): 5 to 50 psi; 85 psi - Maximum Sustained

Operating Range (kPa): 35 to 345 kPa; 586 kPa - Maximum Sustained

Differential Pressure Range (psi): 6 to 14 psi

Differential Pressure Range (kPa): 41 to 97 kPa

Operating Range (psi): 10 to 150 psi; 225 psi - Maximum Sustained

Operating Range (kPa): 69 to 1034 kPa; 1151 kPa - Maximum Sustained

Differential Pressure Range (psi): 10 to 22 psi

Differential Pressure Range (kPa): 60 to 152 kPa

Operating Range (psi): 20 to 300 psi; 350 psi - Maximum Sustained

Operating Range (kPa): 138 to 2068 kPa; 2413 kPa - Maximum Sustained

Differential Pressure Range (psi): 20 to 50 psi

Differential Pressure Range (kPa): 138 to 345 kPa




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