We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Dayton pressure switch, compact metal body, 1/4 in FNPT port, 20/40 PSI setting

Dayton

Dayton Pressure Switch 20/40 PSI 1/4 in FNPT

SKU CH-0W6N-BM5C3

Controls water pumps at 20/40 psi with 1/4 in FNPT port and DPST contacts rated 1.5 hp at 120V

  • TypeLight Switch
  • Controls water-pump pressure at 20/40 psi preset
  • Adjustable differential from 15 to 50 psi
  • Operates in temperatures from -22 to 250 °F
  • Rated 1½ hp at 120 V and 2 hp at 240 V
  • CSA certified and UL listed for safety

Pressure Switch for Water Pumps

The Dayton pressure switch controls water-pump operation with a factory-set 20/40 psi on/off range. It suits residential or light-commercial systems that need automatic pressure regulation. The DPST electrical contact handles up to 1 1/2 hp at 120 V or 2 hp at 240 V single-phase.

Adjustable Differential and Range

The switch offers a pressure differential adjustable from 15 to 50 psi and a total operating range of 10 to 100 psi. A 1/4 in FNPT port connects directly to the pump or tank. NEMA 1 rating limits use to indoor, dry locations.

Capacity and Temperature Limits

The switch operates reliably from -22 to 250 degrees F. It is CSA certified and UL listed for safety compliance. Buyers who need an unloader valve, outdoor-rated enclosure, or three-phase motor control should select a different model.

Highlights

  • Controls water-pump pressure at 20/40 psi preset
  • Adjustable differential from 15 to 50 psi
  • Operates in temperatures from -22 to 250 °F
  • Rated 1½ hp at 120 V and 2 hp at 240 V
  • CSA certified and UL listed for safety

Specifications

BrandDayton
TypeLight Switch

Questions about this item

Should I choose the 20/40 PSI factory setting or adjust within the 10 to 100 psi range?

The switch ships at 20/40 PSI on/off. You can adjust the differential between 15 and 50 psi within the overall 10 to 100 psi range to suit your pump system.

What does the 20/40 PSI rating mean when the switch is installed on my water pump?

The pump will start at 20 psi and stop at 40 psi. The DPST contacts handle up to 1 1/2 hp at 120 V or 2 hp at 240 V single phase.

How does the 1/4 in FNPT port and NEMA 1 rating limit where I can mount this switch?

The 1/4 in FNPT port threads directly onto the pump line. NEMA 1 means indoor use only; the operating temperature range is -22 to 250 °F.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.