Bladder Pump Or Double Valve Pump

Can you tell the difference?
Which is Right for You?

solinst bladder pumps Pneumatic pumps Double valve pumps Low flow sampling Gas drive pumps Groundwater samplers Groundwater sampling Voc sampling Integra bladder pumps image Both have their advantages. Bladder Pumps have low flow capability and ensure that no drive gas comes into contact with sample water, making them ideal, and approved by regulators worldwide for VOC sampling. Select a Bladder Pump for higher regulator acceptance and lower flow rates. Double Valve Pumps provide greater flow rates, as well as low flow capabilities, better performance in silty water, and are low maintenance, with no bladder to replace and fewer parts to decontaminate. Select a Double Valve Pump for faster purging, and operation in harsher environments.

Bladder Pump Double Valve Pump
 

Pump Material

Pump Diameter

PVC 1.66″ (42 mm) 1.66” (42 mm)
316 Stainless Steel 1″ and 1.66″
(25 mm and 42 mm)
5/8″ and 1.66″
(16 mm and 42 mm)
PTFE 3/8” (9.5 mm)
 

Pump Material

Maximum Depth

PVC 100 ft (30 m)* 100 ft (30 m)
316 Stainless Steel 500 ft (150 m)* 500 ft (150 m)
 

Pump Diameter

Maximum Flow Rate

3/8″ (9.5 mm) 250 (ml/min)
5/8″ (16 mm) 800 (ml/min)
1″ (25 mm) 1000 (ml/min)
1.66″ (42 mm) 1500 (ml/min) 3500 (ml/min)
* Deeper with Drop Tube. (See tip)