• Clear plastic cover allows observation of the pressure settings.
• Models have snap-acting switching to open or close a circuit on pressure rise.
• L404T High pressure limit, break a circuit on oil pressure rise above setpoint.
• L404V Low Pressure limit, makes a circuit on oil pressure rise above setpoint.
• 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.5-50# Oil Break on Rise - Mercury Free| Sensor Element | Stainless Steel diaphragm |
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| Overview | Oil pressure sensing devices for use on oil burner systems using any type of fuel oil, including heavy pretreated oils. |
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| Pipe Connections, Main or High Pressure | 1/4 in. NPT internal thread |
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| Maximum Sustained Operating Pressure (psi) | 85 psi |
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| Maximum Sustained Operating Pressure (kPa) | 586 kPa |
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| Application | High oil pressure limit switch for heavy oil applications. |
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| Pressure Differential (psi) | 6 to 14 psi |
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| Pressure Differential (kPa) | 40 to 100 kPa |
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| Operating Range (psi) | 5 to 50 psi |
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| Operating Range (kPa) | 35 to 350 kPa |
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| Mounting | 1/4 in. NPT internal thread or surface mount through back of case |
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| Switch Operation | Auto recycle |
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| Switching Action | SPST snap acting break on pressure rise |
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| Dimensions (in.) | 4 31/32 in. high x 4 1/2 in. wide x 2 3/4 in. deep |
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| Dimensions (mm) | 126 mm high x 114 mm wide x 70 mm deep |
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| Switch Contact Ratings (120 Vac) | 8.0 AFL, 48.0 ALR, 10.0 A resistive |
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| Switch Contact Ratings (240 Vac) | 5.1 AFL, 30.6 ALR, 5.0 A resistive |
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| Differential Type | Subtractive |
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| Temperature Range (F) | -35 F to +150 F |
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| Temperature Range (C) | -37 C to +66 C |
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| Electrical Connections | Screw terminals |
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| Approvals, Underwriters Laboratories Inc | Listed: File No. MP2168, Guide No. MFHX |
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| Approvals, Canadian Standards Association | Certified: File No. LR95329 |
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Product Family
All orders are shipped same-day if the order is received by 1:00 PM Central Time. We ship worldwide.
UPS Hoilday Delivery Schedule
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For more informatrion about Warranty visit Warranty page.
You can also find answers to some common questions on our FAQ page
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