Products & Manufacturers / Controls & HVAC Equipment / Pressure Switches / LEFOO LF20 Differential-Free Multipurpose Pressure Switch
LEFOO · PRESSURE CONTROL

LEFOO LF20 Differential-Free Multipurpose Pressure Switch

LEFOO LF20 manufacturer product photograph
LEFOO LF20 · Official manufacturer image and specification

LEFOO / Mechanical Pressure Switches

LEFOO LF20 Differential-Free Multipurpose Pressure Switch has a manufacturer-defined reset mechanism, process and electrical operating envelope; this profile adds selection precautions rather than simply restating its product catalog.

Engineer the right device and order variant

ApplicationFactory-set but field-adjustable pressure switch for pumps, pools/spas, braking, oil and compressor control; no zero mechanical hysteresis inferred from ‘differential-free’ marketing name
SetpointsMaker lists 0.5–150 psi factory setpoint range, max continuous 150 psi for 0.5–24 psi versions, 250 psi for 25–150 psi versions
Electrical load choicesManufacturer distinguishes resistive 15A/6VDC, 8A/12VDC, 4A/24VDC from inductive 1A/120VAC, 0.5A/240VAC; do not confuse ratings
ContactsSPST NO/NC, optional multi-circuit dual controls; blade/screw lead options
Proof and burst500 psi proof; burst 750 psi for 0.5–24psi setpoint vs 1,250psi for 25–150psi setpoint
China CCC certificate coverageChinese CCC certificate #2024010305637075 names LF20, AC-15 250VAC/0.5A and IP20, validity June 2024–June 2029; the available translation is informational and should be checked against the authoritative original.

Independent selection notes

Before ordering, confirm whether the control action is automatic or manual reset, normal circuit state, switch and reset points, minimum differential, proof and burst pressure, contact rating for the actual inductive load, wetted-media compatibility, final cable/connector ingress classification and ambient/medium temperature. None of these parameters should be taken from a different LF08 or LF20 sibling model.

LEFOO original LF20 manufacturer specification · Manufacturer-hosted certificate with explicit model and legal scope

Related Pages

LEFOO manufacturer profile · Pressure Switches

LF20 — preset behavior and differential terminology

LF20’s pressure switching and factory configuration should be verified against its exact part number; ‘differential-free’ marketing should not be interpreted as mathematically zero contact hysteresis in every installation. Record the make and break points under increasing and decreasing pressure with a calibrated source. Choose compatible media and connectors and do not confuse a mechanical binary pressure contact with a continuous differential-pressure transmitter.