Dwyer Series 1620 Single and Dual Pressure Switch

Part Number: Series 1620 Category:

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On the Series 1620 Single and Dual Pressure Switch, our old faithful switch design is still best where highest precision combined with diaphragm sealed leak proof construction and mounting simplicity are required. Model 1626 and 1627 differential pressure switches are identical in design and construction except that Model 1626 has a single electric switch and Model 1627 has dual electric switches. Model 1627 can therefore provide dual control when required. It can be set to open or close two independent electrical circuits, each preset for its own actuation pressure. Both units have diaphragm sealed motion take outs providing maximum protection against leakage.


Product Applications

  • Damper positioning
  • Duct air contro

Service : Air and non-combustible, compatible gases.

Wetted Materials : Consult factory.

Temperature Limits : -30 to 130°F (-34.4 to 54.4°C).

Pressure Limits : Max. 50 in. w.c. (12.44 kPa) continuous, 2 psig (13.79 kPa) surge.

Switch Type : 1626: SPDT; 1627: (2) SPDT.Repeatability:±1%.

Electrical Rating : 15 A @ 120 to 480 VAC, 60 Hz. Resistive, 1/8 HP @ 125 VAC, 1/4 HP @ 250 VAC, 60 Hz.

Electrical Connections : 3 screw type, common, normally open and normally closed.

Process Connections : 1/8″ female NPT.

Mounting Orientation : Diaphragm in vertical position. Consult factory for other position orientations.

Set Point Adjustment : Screw adjustment.

Weight : sku 1626: 3 lb 9.8 oz (1.64 kg); sku 1627: 3 lb 11.8 oz (1.69 kg).

Agency Approvals : CE.

  • Single or dual action switches support consistent designs with similar skus, but with the ability to match specific application needs
  • Sealed diaphragm provides leak-proof construction for high accuracy and precision control

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