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Geotech Bladder Pumps

Together with the USGS, Geotech designed the original bladder pump for groundwater quality and pollution monitoring. Geotech Bladder Pumps can pump from as deep as 1000 feet (305 meters) with minimal agitation for the best representative samples.

  • True low flow capability for less agitation
  • Proprietary resin grade virgin PTFE bladder for long life
  • Constructed of #316 SS for durability
  • Dedicated or portable turnkey systems
  • Robust screened intake extends bladder life
  • Optional Drop-Tube assembly available for sampling from greater depths
  • Limited lifetime warranty on dedicated stainless steel systems
  • Compatible with the Geocontrol PRO and BP Controller units
  1. 1.66, 36" (4 cm, 91 cm)
    Made from SS for maximum durability. Highest volume rate for a low flow pump. For 2" (5 cm) wells or larger.
    Available in High Pressure and Low Pressure models to meet site specific requirements.
  2. 1.66, 18" (4 cm, 46 cm)
    The same as above but for lower pump volume requirements.
  3. .850, 18" (2.2 cm, 46 cm)
    Made from high-grade SS for maximum durability.
    Extra slim design provides excellent performance for its size.
  4. .675, 18" (1.7 cm, 46 cm)
    Our smallest bladder pump, fits in any well .75" (1.9 cm) or larger.
    Made with the same polished stainless steel as our other top-of-the-line pumps.

 

    1.66, 36" 1.66, 18" .850, 18" .675, 18"
Pump Housing   316 SS 316 SS 316 SS 316 SS
Bladder Material   Virgin PTFE Virgin PTFE Virgin PTFE Virgin PTFE
O.D.   1.66" (4.2 cm) 1.66" (4.2 cm) .850" (2.2 cm) .675" (1.7 cm)
Length w/Screen   38" (96.5 cm) 20" (51 cm) 18 5/8" (47.3 cm) 18 3/4" (47.6 cm)
Weight   5.5 lbs. (2.5 kg)
3.5 lbs. ( 1.6 kg) 1.1 lbs. (.5 kg) .83 lbs. (.4 kg)
Volume/Cycle   22 oz. (650 ml) 11 oz. (325 ml) .9 oz. (29 ml) .5 oz. (15 ml)
Min. Well I.D.   2" (50 mm) 2" (50 mm) 1.00" (25.4 mm) .75" (19 mm)
Operating Pressure
Low Pressure BP:
High Pressure BP:
 
10-125 psi (.7-8.6 bar)
10-500 psi (.7-34 bar)

10-125 psi (.7-8.6 bar)
10-500 psi (.7-34 bar)

100 psi (6.9 bar)
N/A

100 psi (6.9 bar)
N/A
Min. Operating Press.   5 psi (.34 bar) ash* 5 psi (.34 bar) ash* 5 psi (.3 bar) ash* 5 psi (.3 bar) ash*
Maximum Depth
Low Pressure BP:
High Pressure BP:
 
290' (88 m)
1000' (305 m)

290' (88 m)
1000' (305 m)

200' (61 m)
N/A

200' (61 m)
N/A
Air Line (ID x OD)
Low Pressure BP:
High Pressure BP:
 
.17" x .25" (4x6 mm)
.25" x .375" (6x10 mm)

.17" x .25" (4x6 mm)
.25" x .375" (6x10 mm)

.17" x .25" (4x6 mm)
N/A

.17" x .25" (4x6 mm)
N/A
Discharge Line
(ID x OD)
  .25" x .375"
(6 mm x 10 mm)
.25" x .375"
(6 mm x 10 mm)
.17" x .25"
(4 mm x 6 mm)
.17" x .25"
(4 mm x 6 mm)
*ash = above static head

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Geotech Bladder Pump Models
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