Catalogue reference. Availability, exact specification and OEM or aftermarket supply are confirmed in your quotation.
05700405 Delta Pressure Switch Gauge (05700405)
filterPart number: 05700405
Murphy 05700405 (A20DP-30) is a diaphragm-operated differential pressure switch gauge with a 2 inch dial and a 0–30 psi range. It indicates oil, fuel or water filter restriction and has an adjustable pilot-duty contact for an alarm or shutdown circuit. The case and lens are polycarbonate. Confirm the equipment and control-circuit requirements before ordering.
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Availability on request
Technical specifications
| Manufacturer | Murphy |
|---|---|
| Part number | 05700405 |
| Category | Sensors & automation |
| Availability | On request |
| Reference basis | Manufacturer part-number reference; supply origin requires quotation confirmation |
| Differential pressure range | 0–30 psi (0–207 kPa) |
| Dial diameter | 2 in (51 mm) |
| Process connection | 1/8-27 NPTM, brass |
| Switch contact | SPST, adjustable; pilot duty, 2 A at 30 VAC/DC |
| Sensing element | Beryllium copper diaphragm |
| Case | Polycarbonate |
| Lens | High-impact polycarbonate |
| Bezel | Polished stainless steel |
| Ambient temperature range | −40 to 150 °F (−40 to 66 °C) |
| Process temperature range | −40 to 250 °F (−40 to 121 °C) |
| Gauge accuracy | ±3% maximum across scale |
Catalogue information may contain errors or be out of date. Full specifications and verified details are available on request. Confirm the part number and equipment fitment with us before ordering.
Product questions
What does Murphy 05700405 measure and what is its range?
The A20DP-30 is a differential pressure gauge with a 0–30 psi (0–207 kPa) range and a 2 inch (51 mm) dial. It is intended to indicate restriction in oil, fuel or water filters.
Does the 05700405 gauge include an alarm or shutdown switch?
Yes. Its adjustable pointer contact provides a pilot-duty switch circuit that can be used with an alarm or shutdown system. The contact is rated 2 A at 30 VAC/DC; check the control circuit requirements before use.
What process connection does the A20DP-30 use?
The specified process connection is 1/8-27 NPT male in brass. Confirm the connections and pressure requirements of the installation before ordering.
How can I check whether 05700405 is the correct replacement?
Match the complete part number, differential pressure range, process connection and switch requirements against the existing gauge and equipment documentation. Fitment is not established for a specific machine; provide the equipment model and serial number for verification.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.