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Dayton pressure switch, compact metal housing with 1/4 inch FNPT port, silver finish

Dayton

Dayton Pressure Switch 30/50 PSI 1/4 in FNPT

SKU CH-Z872-RHV07

Controls water-pump pressure between 30 and 50 psi with a 1/4 in FNPT port, DPST contacts rated to 1 1/2 hp at 120 V and 2 hp at 240 V, CSA certified and UL listed for -22 to 250 °F operation

  • Product typeLight Switch
  • Controls water pump at 30/50 psi factory settings
  • Handles up to 2 hp at 240V single phase
  • Operates from -22 to 250 degrees F
  • DPST contacts with 15 to 50 psi differential
  • CSA certified and UL listed for safety

Dayton Pressure Switch 30/50 PSI

This Dayton pressure switch controls water-pump operation with a factory on/off setting of 30/50 psi. It features a 1/4 in FNPT port, DPST electrical contacts, and a standard action mechanism. The unit is CSA certified and UL listed for safety compliance.

Suits installers needing a direct-replacement pump

Buyers who want an adjustable differential outside the 15 to 50 psi range should look elsewhere. The switch operates within a 10 to 100 psi range and handles 1 1/2 hp at 120V or 2 hp at 240V single phase. It is not suited for systems requiring an unloader valve or NEMA ratings above 1.

Threads into a 1/4 in FNPT fitting

No unloader valve is included, so installers must verify the plumbing layout before mounting. The temperature range spans -22 to 250 degrees F, allowing use in cold and hot water lines. Wiring follows the DPST contact form; incorrect wiring is the most common cause of pump cycling issues.

How it compares

Measured against everything we stock in Electrical Switches & Dimmers, at today’s prices. Recalculated every night.

Price $20.99
Cheaper than about 78% of the 791 comparable items (median $39.99).

Specifications

Product
Brand nameDayton
Product typeLight Switch

Questions about this item

What size pipe fitting do I need to connect the 1/4 in FNPT port on this switch?

The switch has a 1/4 in FNPT port, so you need a male NPT fitting of the same size to thread into it.

Will the DPST contacts handle the 1 1/2 hp rating at 120 V if I keep my existing single-phase motor?

Yes, the DPST contacts are rated for 1 1/2 hp at 120 V single phase and 2 hp at 240 V single phase.

How can I verify the switch is cycling at the correct 30/50 psi settings after installation?

Watch a pressure gauge while the pump runs; the contacts should close at 30 psi and open at 50 psi.

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