ENL404F1060 ELITE Pressure and Limit Control 2–15 PSI, Mercury-Free SPDT
Take control of your low-pressure boiler, oil, or heating system with the ENL404F1060 ELITE Pressure and Limit Control. This mercury-free SPDT switch operates within a 2–15 PSI range with a 2–6 PSI differential, delivering precise and reliable control. The stainless steel diaphragm and brass pressure joint ensure long-lasting performance, while the clear plastic housing cover allows instant visual monitoring of the pressure setpoint.
✅ Replaces Honeywell L404F1060 – Direct replacement, perfect for retrofits or system upgrades.
Designed for oil, water, air, and other non-corrosive media, this ELITE control is easy to install with standard 1/4-18 NPT threading, ideal for residential and commercial low-pressure systems.
🔥 Key Features of the ENL404F1060
✅ Mercury-Free & Environmentally Safe – Protects the planet while providing safe operation.
✅ Accurate Low-Pressure Control – Maintains 2–15 PSI with 2–6 PSI differential for consistent system operation.
✅ Rugged & Reliable Construction – Stainless steel diaphragm and brass pressure joint ensure long-term durability.
✅ Clear Pressure Setpoint View – Transparent housing allows instant confirmation of pressure settings.
✅ Versatile SPDT Functionality – Works with oil, water, air, and other non-corrosive media.
✅ Simple & Quick Installation – Standard 1/4-18 NPT thread allows hassle-free setup.
💻 Technical Specifications
| Specification | Details |
|---|
| Model |
ENL404F1060 ELITE Pressure and Limit Control |
| Type |
Pressure Limit Control / SPDT Switch |
| Pressure Range |
2–15 PSI |
| Differential |
2–6 PSI |
| Max Diaphragm Pressure |
25 PSI |
| Max Ambient Temperature |
150.8°F (66°C) |
| Electrical Rating |
15A @ 250 VAC |
| Interface Thread |
1/4-18 NPT |
| Contact Type |
SPDT |
| Housing |
Clear Plastic Cover |
| Diaphragm Material |
Stainless Steel |
| Pressure Joint Material |
Brass |
| Media Compatibility |
Oil, water, air, other non-corrosive liquids |
| Installation Orientation |
Vertical or horizontal |
| Environment |
Indoor; -20°F to 150.8°F (-29°C to 66°C) |
| Safety & Compliance |
Mercury-free, environmentally safe |
📊 ENL404F ELITE Series Quick Reference Chart
| Feature / Spec | ENL404F1060 | ENL404F1078 | ENL404F1094 | ENL404F1102 |
|---|
| Pressure Range |
2–15 PSI |
5–50 PSI |
20–300 PSI |
10–150 PSI |
| Differential |
2–6 PSI |
6–14 PSI |
20–50 PSI |
10–22 PSI |
| Max Diaphragm Pressure |
25 PSI |
85 PSI |
350 PSI |
225 PSI |
| Max Ambient Temperature |
150.8°F (66°C) |
150.8°F (66°C) |
150.8°F (66°C) |
150.8°F (66°C) |
| Max Electrical Rating |
15A @ 250 VAC |
15A @ 250 VAC |
15A @ 250 VAC |
15A @ 250 VAC |
| Interface Thread |
1/4-18 NPT |
1/4-18 NPT |
1/4-18 NPT |
1/4-18 NPT |
| Contact Type |
SPDT |
SPDT |
SPDT |
SPDT |
| Housing |
Clear Plastic Cover |
Clear Plastic Cover |
Clear Plastic Cover |
Clear Plastic Cover |
| Typical Applications |
🔹 Low-pressure boilers, oil systems |
🔹 Medium-pressure boilers, heating systems |
🔹 Industrial & high-pressure process systems |
🔹 Higher-pressure boilers & water systems |
| Honeywell Cross Reference |
L404F1060 |
L404F1078 |
L404F1094 |
L404F1102 |
⚡ Common Issues Solved
-
Low-pressure fluctuations in boiler or oil systems
-
Overpressure or underpressure affecting system performance
-
Faulty SPDT switch causing control inconsistencies
-
Need for mercury-free, safe low-pressure control
❓ Frequently Asked Questions (FAQ)
Q1: Will the ENL404F1060 work exactly like the Honeywell L404F1060?
A: Yes — it is a direct replacement with the same operating pressure range (2–15 PSI), differential (2–6 PSI), SPDT switch, stainless diaphragm, and 1/4″ NPT mounting.
Q2: Are the electrical terminals identical to Honeywell?
A: Yes — screw terminals and SPDT layout are the same, allowing plug-and-play wiring transfer from the old unit.
Q3: Can it handle corrosive liquids?
A: No — only suitable for oil, water, air, and other non-corrosive media.
Q4: Is this switch mercury-free?
A: Yes — it is completely mercury-free and environmentally safe.
Q5: How often should it be inspected or replaced?
A: Inspect annually; replace immediately if there are signs of wear, diaphragm damage, or inconsistent pressure readings.
🛒 Shopping Tips / Buyer Guidance
✅ Confirm System Pressure – Ensure operation within 2–15 PSI.
✅ Check Compatibility – Use the ENL404F ELITE Series Quick Reference Chart.
✅ Media Matters – Works with oil, water, air, and non-corrosive liquids only.
✅ Thread Size Check – Standard 1/4-18 NPT.
✅ Plan Maintenance – Inspect annually; replace if needed.
✅ Eco-Friendly Choice – Mercury-free design protects the environment.
