Longer  BT 300-2J  Peristaltic Metering pump and YZ2515X-C  pump head max flow of1100 ml//min ideal for accurate  chemical dosing and laboratory applications. Reliable, efficient  and  easy to  use dosing pumps. 240 V and 50 Hz.


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Peristaltic Pumps- Principle of Operation.

Peristaltic pumps (also known as hose pumps, tube pumps) are a type of positive displacement pump which are widely used in  laboratories, water treatment, chemical processing and food processing industries. It creates a steady flow for dosing and blending and is able to pump a variety of fluids with different viscosities. The laboratory peristaltic metering pumps are capable of forward and reverse pump action.

Pumping action is achieved by compression of a circular loop of elastomeric hose with two diametrically opposed rotating shoes. This rotational motion forces the fluid in the hose to move ahead of each shoe. When each shoe reaches the end of the loop, the reinforced tube immediately returns to its original shape.  This ensures reliable  suction and priming. The pump housing is partially filled with lubricant, aiding smooth running of the shoes on the hose. The inside of the hose and hose inserts are the only pieces of equipment in contact with pumped fluids. This  facilitates the use of corrosive and even heated liquids without any damage to pumps parts.


We stock  a diverse a range of   Longer Pumps that include Peristaltic Pumps , Syringe Pumps and Gear Pumps. These pumps can be supplied in single head and multi head configuration. Below is a  summary of the range of pumps we supply:

Miniature Peristaltic Pump BQ5…
0.0002 – 20 mL/min
BT100-2J Low Flow Rate Perista…
0.002-380 mL/min
BT300-2J – Medium Flow Rate Pe…
0.07-1140 mL/min
BT600-2J – Medium-High Flow Rate
0.07-3000 mL/min

WT600-2J – High Flow Rate Peristaltic Pump
4.2-6000 mL/min
WT600-3J – High Flow Rate.
4.2-6000 mL/min
YT600-1J – Industrial Peristaltic Pumps
600-11000 ml/min
JL350-2J High Flow Rate Pump
Precise peristaltic pump BT300-2J can be loaded YZ1515X,YZ2515X,YZII15, YZII25. The pump delivers flow rates from 0.07 to 1140 mL/min. The pump speed can be adjusted manually or automatically via an external control interface. Stores the present  parameters automatically. Easy to operate.


– Speed: 1 to 300 rpm, reversible
– Speed resolution: 1 rpm
– Speed control: Rotary encoded switch
– Display: 3-digit LED displays current speed
– Analog interface: Start/stop and cw/ccw control, 0 to 5 V, 0 to 10 V, 4 to 20 mA and 0 to 10 KHz speed control
– Power supply: AC 90 – 260V  50/60 Hz
– Power consumption: < 48 W
– Operating condition: Temperature 0 to 40℃ Relative humidity < 80%
– Dimensions (L×W×H): 285×207×180 (mm)
– Drive weight: 3.6 kg
– IP rating: IP 31

Functions and Features

– Applicable pump heads: YZ1515X, YZ2515X,YZII15, YZII25
– Prime button for fast filling and emptying
– Adjust speed manually or automatically through External interface
– Realize computer control through RS-485 communication interface.
– Memory function: Storing the running parameters automatically
– Equipped with Longer Dispensing Controller for filling function


Type Product
Pump Head Tubing Max. Flow Rate(ml/min) Weight
BT300-2J 05.02.31A   YZ1515x   YZII15 13# 14# 19# 16# 25# 17# 18# 1140 4.0
YZ2515x 15# 24# 840
YZII25 15# 24# 35# 36# 1500
DG15-24 16# 25# 17# 900 (single channel) 4.4
Suitable Pump Head
Tubing Specifications
Flow Rate Curves

Additional information

Weight 5 kg
Dimensions 30 × 20 × 20 cm


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