This product appears in the ERE Water Catalogue 2026
Rolls-Royce
Bureau Veritas
Renouveau La Fontaine
Englobe
National Defence
Government of QuébecOverview
Features
• Constructed of 316 Stainless Steel for durability
• Proprietary resin grade virgin PTFE bladder for long life
• Robust screened intake extends bladder life
• True low flow capability for less agitation
• Optional “Drop-Tube” assembly available for sampling from greaterdepths
• Compatible with geocontrol PRO™ and 300 psi & 500 psi BP Controllers
Compare models
Your selection is highlighted. Select a row to switch.| Part Number | GT-1.66X36D | GT-1.66X18D | GT-850X18D | GT-675X18D |
| Pump Housing | 316 Stainless Steel | 316 Stainless Steel | 316 Stainless Steel | 316 Stainless Steel |
| Bladder Material | Virgin PTFE | Virgin PTFE | Virgin PTFE | Virgin PTFE |
| Outer Diameter | 1.66" O.D. | 1.66" O.D. | 0.850" O.D. | 0.675" O.D. |
| Length With Screen | 38" L | 20" L | 18 5⁄8" L | 18 3⁄4" L |
| Weight | 5.5 lbs | 3.5 lbs | 1.1 lbs | 0.83 lbs |
| Volume/Cycle | 22 oz. (650 ml) | 11 oz. (325 ml) | 0.9 oz. (29 ml) | 0.5 oz. (15 ml) |
| Min. Well Interior Diameter | 2" I.D. | 2" I.D. | 1.00" I.D. | 0.75" I.D. |
| Low Pressure BP | 10 - 125 psi (0.7 - 8.6 bar) | 10 - 125 psi (0.7 - 8.6 bar) | 100 psi (6.9 bar) | 100 psi (6.9 bar) |
| High Pressure BP | 10 - 500 psi (0.7 - 34 bar) | 10 - 500 psi (0.7 - 34 bar) | N/A | N/A |
| Min. Operating Pressure | 5 psi (0.34 bar) ash* | 5 psi (0.34 bar) ash* | 5 psi (0.34 bar) ash* | 5 psi (0.34 bar) ash* |
| Maximum Depth | ||||
| Low Pressure BP | 290 ft (88 m) | 290 ft (88 m) | 200 ft (60 m) | 200 ft (60 m) |
| High Pressure BP | 1000 ft (305 m) | 1000 ft (305 m) | - | - |
| Tubing Required | Air Low Pressure BP WA-1/4-LDPE-100
Air High Pressure BP WA-3/8-LDPE-100
Water (Discharge) WA-3/8-LDPE-100 | Air Low Pressure BP WA-1/4-LDPE-100
Air High Pressure BP WA-3/8-LDPE-100
Water (Discharge) WA-3/8-LDPE-100 | Air Low Pressure BP WA-1/4-LDPE-100
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Water (Discharge) WA-3/8-LDPE-100 | Air Low Pressure BP WA-1/4-LDPE-100
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Water (Discharge) WA-3/8-LDPE-100 |
Documents
Parts & accessories
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Price on quote
Compare with similar models
Geotech · Water Sampling Pump| Spec | This model Dedicated Bladder PumpPrice on quote
|  Portable Bladder PumpsPrice on quote
|
|---|---|---|
| • Pump Housing | 316 SS | 316 Stainless Steel |
| • Bladder Material | Virgin PTFE | Virgin PTFE |
| • O.D. | 1.66'' | 1.66'' |
Questions, answered
How fast will I get a price?
Send the quote request and a specialist replies within 4 business hours, Monday to Friday, 8:00 to 4:30 ET.
Can we pay on account or by purchase order?
Yes. With established credit, terms are Net 30 days, and you can send your purchase order with the quote request. We also accept Visa, Mastercard and American Express.
How is shipping charged?
On quotes and account orders, freight is F.O.B. Montréal: the carrier charge is worked out at shipment from the packed weight and dimensions, and added to your invoice. In-stock items can also be picked up the same day in Montréal (8605 rue du Champ-d'Eau).
Can I return it?
Yes, within 30 days of purchase, with a return authorization number from customer service first. A 25% restocking fee applies, unless it is a defect covered by the warranty. Special orders, hazardous materials, flammable liquids and gases can't be returned. Return policy
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