TLNLMY 30–50 PSI Well Pump Pressure Switch

TLNLMY’s well pump pressure switch is listed with a 30–50 PSI adjustable operating range and a 1/4-inch female NPT connection. It is intended to switch a pump on and off according to water pressure, rather than boost pressure itself.

At a glance

The listing states a 30 PSI pump-on point and a 50 PSI pump-off point.
Pressure control is intended to automate pump starting and stopping as line pressure changes.
The 1/4-inch female NPT port is listed for jet, submersible and reciprocating pumps.

Price

$22.93Save 15%

Reference price: ~~$26.99~~

Price checked: 14 Nov 2026

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Pros and cons

Pros

A defined 30/50 PSI switching setup gives buyers a clear starting point for systems requiring those thresholds.
The listing identifies a standardised connection type and several pump categories for fitment consideration.

Cons

This is a control switch, not a pressure booster, so it cannot raise water pressure by itself.

Technical specifications

18 specifications

Identity and control
Brand	TLNLMY
Pressure range	30-50 PSI
Operating mode	ON-OFF
Control type	Pressure Control
Contact type	Normally Open
Circuit type	1-way
Switch type	other

Electrical
Current rating	12 Amps
Operating voltage	230 Volts
Terminal type	Screw
Contact material	Metal
Upper temperature rating	70 Degrees Celsius

Connection and installation
Connector type	1/4" Female NPT
Mounting type	Surface Mount
Dimensions listed	20 x 40 x 10 millimetres
Number of positions	1

Materials and compatibility
Material	Metal, Plastic
Compatible pumps	Jet pumps, Submersible pumps, Reciprocating pumps

What to know before buying

Listing details to confirm

Listing details conflict on voltage: the electrical specification gives 230 Volts, while the description lists 110V/230V. The product description also calls the pressure setting range 30-50 PSI while the feature text presents 30 PSI on and 50 PSI off. Confirm the correct electrical supply and switching settings for the selected item before installation. The stated prevention of dry runs is a manufacturer claim, not established protection performance.

What’s in the box

Included

Other

Who is it for?

A good fit for

Well-pump owners seeking an on-off pressure switch for a system set around 30/50 PSI.
Buyers whose pump installation accepts a 1/4-inch female NPT connection and matches the stated electrical requirements.

Less suited to

Anyone needing a device that boosts water pressure.
Installations requiring a confirmed voltage or connection specification that differs from the listing.

TLNLMY 30–50 PSI Well Pump Pressure Switch · photo 2 — Additional product photo 2

Customer reviews on Amazon

5 / 5 · 1 ratings

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4 stars0%0%
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2 stars0%0%
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The supplied evidence contains only a single aggregate rating and no written customer feedback. That small sample cannot establish how reliably the switch performs or whether it suits a particular pump installation.

Frequently asked questions

What pressure settings does the listing give?

It lists a 30–50 PSI range and says the pump turns on at 30 PSI and off at 50 PSI. Confirm those settings for the supplied switch, as the listing describes them in more than one way.

What voltage does it use?

The electrical specification says 230 Volts, but the description states 110V/230V. Check the applicable voltage before choosing or wiring it.

Will this switch increase water pressure?

No. The product description says it controls a pump’s automatic power-on and power-off functions and does not provide a boost function.

Which pumps are listed as compatible?

The listing names jet pumps, submersible pumps and reciprocating pumps. Check that the 1/4-inch female NPT port and electrical requirements suit your particular setup.