This product appears in the ERE Water Catalogue 2026
Rolls-Royce
Bureau Veritas
Renouveau La Fontaine
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National Defence
Government of QuébecOverview
Features
• Constructed of 316 Stainless Steel
• No special tools or training required to service the pump
• Drop tube intake option allows for deeper sampling
• Compatible with geocontrol PRO™ and 300 psi & 500 psi BP Controllers
*Replacement PTFE bladders also available
Compare models
Your selection is highlighted. Select a row to switch.| Part Number | GT-1.66X36P | GT-1.66X18P | GT-850X18P | GT-675X18P |
| Pump Housing | 316 Stainless Steel | 316 Stainless Steel | 316 Stainless Steel | 316 Stainless Steel |
| Pump Ends | 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 | 40" L | 19" L | 18 5⁄8" L | 18 3⁄4" L |
| Weight | 5.0 lbs | 3.0 lbs | 1.1 lbs | 0.83 lbs |
| Volume/Cycle | 11 oz. (310 ml) | 5 oz. (150 ml) | 0.9 oz. (29 ml) | 0.5 oz. (15 ml) |
| Min. Well Interior Diameter | 2" I.D. | 2" I.D. | 1" I.D. | 0.75" I.D. |
| Max. Operating Pressure | 100 psi (6.9 bar) | 100 psi (6.9 bar) | 100 psi (6.9 bar) | 100 psi (6.9 bar) |
| Min. Operating Pressure | 5 psi (0.3 bar) ash* | 5 psi (0.3 bar) ash* | 5 psi (0.3 bar) ash* | 5 psi (0.3 bar) ash* |
| Max. Smapling Depth | 200 ft (60 m) | 200 ft (60 m) | 200 ft (60 m) | 200 ft (60 m) |
| Replacement PE Bladder | GT-21150056-E | GT-21150056-E | GT-21150099-E | GT-21150101 |
Tubing Required Air
Water (Discharge) | WA-1/4-LDPE-100
WA-3/8-LDPE-100 | WA-1/4-LDPE-100
WA-3/8-LDPE-100 | WA-1/4-LDPE-100
WA-1/4-LDPE-100 | WA-1/4-LDPE-100
WA-1/4-LDPE-100 |
Documents
Parts & accessories
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Price on quote
Compare with similar models
Geotech · Water Sampling Pump| Spec | This model Portable Bladder PumpsPrice on quote
|  Dedicated Bladder PumpPrice on quote
|
|---|---|---|
| • Pump Housing | 316 Stainless Steel | 316 SS |
| • 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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