Liquid Changeover

LR : LR-SF/LA – Liquid Changeover Regulator

  • Liquid Auto Changer
  • Easy visible status indicators
  • CE certified


When there are two cylinder lines, changeover from line-A to line-B for replacement is always required. Liquid Changeover LR switches active line from line-A to line-B automatically by detecting pressure


Space-saving compact size allows more freedom for installation.


Red arrows indicates which line is in use. changeover activation status can be checked easily by color indicator.

Structural image of liquid changeover mechanism


LR functions with “Snap Reverse Structure” to achieve dust-proof and rain-proof construction. The simplest and most reliable form of liquid automatic changer realizing highly accurate and instantaneous changeover operation.

Image of operation status indicators

Operation image of efficient cylinder replacement with LR luquid changerover


Simple structure allows disassembly and assembly to be performed easily at the site.


Fluid LPG (Liquefied Petroleum Gas)
Capacity (kg/h) Max. 300 Max. 900
(100% for propane) (100% for propane)
Max. 150 Max. 300
(30% or less for propane) (30% or less for propane)
Changeover Pressure (MPa) LR-SF-Ⅰ: 0.05 ∼ 0.22 LR-LA-Ⅰ: 0.05 ∼ 0.18
LR-SF-Ⅱ: 0.15 ∼ 0.34 LR-LA-Ⅱ: 0.15 ∼ 0.30
Changeover Pressure Operating Accuracy (MPa) ±0.01
Required Inlet Pressure (Changeover pressure +ΔP) ∼ 1.56 MPa
LR-SF Capacity (kg/h) 100 150 200 250 300
ΔP LR-SF-Ⅰ 0.03 0.07 0.11 0.14 0.18
(MPa) LR-SF-Ⅱ 0.06 0.08 0.11 0.15 0.18
LR-LA Capacity (kg/h) 300 450 600 750 900
ΔP LR-LA-Ⅰ 0.03 0.07 0.11 0.14 0.18
(MPa) LR-LA-Ⅱ 0.05 0.09 0.13 0.16 0.2
Inlet Size JIS20K 20A Flange JIS20K 25A Flange
Outlet Size JIS20K 20A Flange JIS20K 25A Flange
Weight (kg) 13 14
Dimensions (mm) 215 ×425 ×195 260 ×445 ×225
LR Panel (Option) Dimensions (mm) 90 ×170 ×60
Voltage AC100V
Alarm Terminal 100V 5A
(Contact material: silver contact plated with gold)
You can scroll


  • Explosion-proof Signal Transmitter Switch (Optional)
    With Signal Transmitter Switch, the actuation of LR could be verified under remote monitor through a telephone line
    Control circuit : 220V
  • LPG consumption should be lower than the LR standard capacity indicated above
  • If the LR inlet pressure requirement could not be adapted, it might be necessary to change the LPG composition

Sample installation image

Installation image of LR series - the liquid changeover

Product Link-1: Kagla LRU – Changeover with Strainer Ball Valves (PUREFLOWs) for space saving

Product Link-2: Medium pressure regulator Kagla KR series

Product Link-3: Electric water bath vaporizer Kagla AX5 series

Product Link-4: Electric water bath vaporizer Kagla CX series

Product Link-5: Dry-Electric vaporizer Kagla ADX series


Contact us

Product inquiry

For inquiries about products and services, please use the inquiry form.