Solenoid-Driven Metering Pumps DCLPW・CLPW


Product Introduction Video


Automatic Air Evacuation Mechanism to Ensure Intake Air Elimination

Automatic air evacuation mechanism ensures intake air is eliminated.

Old model Intake process(1) Air mixing Standby Air location stays the same Evacuation process The air is compressed, but the sodium hypochlorite is not injected *Air entrainment phenomenon Standby(2) The compressed air being restored to its original size prevents intake of the sodium hypochlorite DLCPW・CLPW Intake process(1) Air mixing Standby Air is compressed Evacuation process Sodium hypochlorite and air are discharged Chemical and air Intake process(2) Intakes sodium hypochlorite

Comparison of air evacuation times Comparison of the time required to purge air that is trapped in the pump head between CLPW and previous models(CLPZD, ARPZD). Test conditions(Discharge pressure:1.0MPa, air volume:0.1mL) Approx. 66% reduction Test conditions(Discharge pressure:1.0MPa, air volume:0.5mL) Approx. 60% reduction

Air block construction video

Air-Block Mechanism to Prevent Air Mixing in the Pump Head (DCLPW only)

The most common cause of sodium hypochlorite injection defects is "air-mixing". This occurs when air becomes trapped inside the pump head.

The DCLPW is mounted with an air-block mechanism to prevent air mixing. Even if 15 cc of air is sent in one burst, there is absolutely no mixing inside the pump head.

To prevent injector defects, obstructing air mixing is critical.

Trapped air bubbles entered through a tank can be released from an air-release port.

Pump Head Construction That Controls Air Retention

Flow routes inside the pump head are made as narrow as possible to minimize dead space, which not only reduces the amount of mixed air and air retained, but makes air easier to evacuate air by increasing the compression ratio.

Transparent Acrylic Head Allows View of the Pump Head Interior at a Glance

Use of a transparent acrylic head allows view of pump operation, air mixing and retention at a glance.

Injection Nozzle for Sodium Hypochlorite to Prevent Clogging of the Injection Point

The injection nozzle was developed exclusively for sodium hypochlorite to prevent crystallization and clogging due to back-flow or reactions with raw water.

Causes of clogging Calcium contained in raw water that enters the injection valve from the main pipe reacts with the sodium hypochlorite and crystallizes!

When a sodium hypochlorite injection nozzle is used... The back stop cap is closed to prevent back-flow of raw water!

Other Pumps for Sodium Hypochlorite


For Injection of Sodium Hypochlorite (NaClO)

30R 60R 100R 30 60 100 30R 60R 100R 30 60 100
Max. discharge volume (mL/min) 30 60 90 30 60 90 30 60 90 30 60 90
Max. discharge pressure (MPa) 0.7 1.0 0.7 0.7 1.0 0.7