Honeywell L4079 Manual Reset High Steam Pressure Switches
High pressure limit switches
- Stainless steel diaphragm for use with steam, air, noncombustible gases and fluids non-corrosive to stainless steel.
- L4079W is for Oil Applications.
- Micro Switch™ snap-acting switches open automatically on pressure rise; must be manually reset.
- Mount using 1/4 in. NPT female fitting on diaphragm assembly or surface mount through back of case.
- Application: Provide limit control of steam, air, non-combustible gases or non-corrosive fluids
- Dimensions (in.): 5 in. high x 4 1/2 in. wide x 3 1/2 in. deep.
- Dimensions (mm): 127 mm high x 114 mm wide x 89 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: File No. LR95329, Certificate No. 1720340
- 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): 150 F - Maximum Ambient
- Operating Temperature Range (C): 66 C - Maximum Ambient
- Approvals, Swiss RE: Acceptable
- Sensor Element: Stainless Steel diaphragm
- Switch Operation: Manual Reset
- Switching Action: SPST break 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
Operating Range (psi): 10 to 150 psi; 225 psi - Maximum Sustained
Operating Range (kPa): 70 to 1035 kPa; 1151 kPa - Maximum Sustained
Operating Range (psi): 5 to 50 psi; 85 psi - Maximum Sustained
Operating Range (kPa): 35 to 350 kPa; 586 kPa - Maximum Sustained
Operating Range (psi): 20 to 300 psi; 350 psi - Maximum Sustained
Operating Range (kPa): 140 to 2070 kPa; 2413 kPa - Maximum Sustained