Pressure switch

Pressure switch : that makes an electrical contact when a certain level of pressure has been achieved on its input. This is used to provide on/off switching from an hydraulic source.

Variable speed drives
Water pump control panel
Pressure switch
Pump automation
Float switch - Regulator of level
Motor protection circuit breaker
Cable
Coupling
Level regulator
Pressure control
Condensator
Solenoid valve
Kit d'automatisme pour réservoir à vessie - E/S 1" Kit d'automatisme pour réservoir à vessie - E/S 1" 2
Last items in stock
Pressure switch
Automatic functioning set for surface pump 230V
£99.07

£99.07 tax excl.

Last items in stock

This automatic kit in single-phase, is designed to connect and to do automatic functioning of surface pump, and bladder tank too (on-line, spherical or horizontal). The contactor permit to connect a surface pump single-phase.
Contacteur manométrique PM/5 - PM/12 Contacteur manométrique PM/5 - PM/12 2
2 to 3 days
Pressure switch
Pressure switch PM/5 - PM/12
£25.67

£25.67 tax excl.

Delivery 2 to 3 days

Pressure switch for water networks, single-pole or two-pole connection (230 volts), two pressure switch models, 1 to 5 bar (PM/5) and 3 to 12 bar (PM/12). 1/4" female threaded connection.
Contacteur manométrique avec manomètre PM5
2 to 4 days
Pressure switch
Pressure switch with pressure gauge PM5
001214
£33.49

£33.49 tax excl.

Delivery 2 to 4 days

0-6 bar pressure switch with pressure gauge and built-in fittings for screwing directly onto pump and tank. Factory setting 1.5 to 2.8 bar, food grade quality.
Kit automatisme de pompe avec réservoir 24L Kit automatisme de pompe avec réservoir 24L 2
Pump automation
Pump automation kit with 24L tank
£311.17

£311.17 tax excl.

Surface pump automatic control kit fitted with a 24 litre tank and fittings made of 316 stainless steel, this system manages the starting and stopping of a single-phase pump up to 1.50 Kw. The kit screws directly onto the 1" or 1"1/4 BSP discharge of your pump.
Pressostat process inox
2 to 4 days
Pressure switch
Stainless steel process pressure switch
001040
£217.68

£217.68 tax excl.

Delivery 2 to 4 days

Internal mechanism and fitting in 303 stainless steel; 316 Ti stainless steel diaphragm, IP 65 polycarbonate housing, 2 SPDT contacts. PS 12 bar, 1/4" F connection, suitable for use with pump, compressor, booster tank, boiler, refrigeration unit.
Kit automatisme pompe de surface inox Kit automatisme pompe de surface inox 2
2 to 3 days
Pump automation
Stainless steel surface pump automatic control kit
£206.52

£206.52 tax excl.

Delivery 2 to 3 days

The surface pump automatic control kit is made entirely of 316 stainless steel, this system manages the starting and stopping of a single-phase pump up to 1.50 Kw. The kit screws directly onto the 1" or 1"1/4 BSP discharge of your pump.
Pressostat électronique avec manomètre digital - Switchmatic Pressostat électronique avec manomètre digital - Switchmatic 2
1 to 3 days
Pressure switch
Switchmatic 2 digital electronic pressure switch
001032
£75.35

£75.35 tax excl.

Delivery 1 to 3 days

Electronic pressure switch with digital display, manages the starting and stopping of a single-phase pump up to 1.50 Kw, pressure reading on the display, easily adjustable pressures, connection identical to a pressure switch, protection against overcurrents and dry running.
Pressostat électronique digital triphasé Switchmatic 2 T
2 to 3 days
Pressure switch
SWITCHMATIC 2T three-phase electronic pressure switch
001033
£143.72

£143.72 tax excl.

Delivery 2 to 3 days

Three-phase electronic pressure switch with built-in digital pressure gauge. Manages starting and stopping of a three-phase pump up to 4.00 kW, instantaneous current reading, dry-run protection, and thermal and overcurrent protection. Individual or duo operation (alternating sequence).
Contacteur manométrique PT/5 - PT/12
2 to 3 days
Pressure switch
Three-phase pressure switch PT/5 - PT/12
£26.51

£26.51 tax excl.

Delivery 2 to 3 days

Pressure switch for water network, three-pole connection (three-phase), two pressure switch models, 1 to 5 bar (PT/5) and 3 to 12 bar (PT/12). 1/4" female threaded connection.
XMP Telemecanique pressure switch
2 to 3 days
Pressure switch
XMP Telemecanique pressure switch
001010
£26.65

£26.65 tax excl.

Delivery 2 to 3 days

XMPM6 - XMPM12. Pressure switches type XMP are switches for power circuits (direct switching), with an adjustable differential.
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Practical information

Need advice? Our team is available (Monday - Friday: 8:30-12:00 and 13:00-16:30).

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Delivery

  • Same-day dispatch for orders placed before 12 noon, in most cases.
  • Colissimo without signature in mainland France, delivery within 2 to 3 days.
  • Chronopost on request.
  • DB SCHENKER transport for oversized parcels: delivery to your freight forwarder in France, with guaranteed tracking.
Delivery terms

Advice and guides

Go to our guides

A pressure switch to control the pump by pressure

A pressure switch starts and stops the pump according to network pressure: it switches on below a low threshold and cuts out at the high threshold. It equips surface pump sets with a bladder tank, booster sets, and domestic water or irrigation systems.

Setting and selection

Choose a pressure range compatible with your installation, an electrical rating suited to the pump and, if needed, a model with a gauge or an inverted version for dry-run protection. Set the pressures according to the manual.

Frequently asked questions: Pressure switches

How does a pressure switch work?

A pressure-sensitive diaphragm operates an electrical contact. When pressure drops, the contact closes and the pump starts; when it rises to the high threshold, the contact opens. Thresholds are adjusted with screws.

What is the inverted version for?

It is used to protect the pump against a lack of water upstream, for example on a supply from the mains. The principle and wiring are explained on the product page.

Why does my pump start too often?

First check the tank pre-charge pressure, then the switch thresholds and the tightness of the circuit. A gap between the thresholds that is too small also causes frequent starts.

Do you need advice before buying?

Our team helps you choose the right equipment for your installation: call +33 3 44 25 91 01 Monday to Friday, 8:30 am to 12:00 pm and 1:00 pm to 4:30 pm (French time), or email contact@pompes-h2o.com. Public bodies can pay by administrative order (mandat administratif), with invoicing through Chorus Pro.