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Godwin Wet Prime
Xylem Pumps › Godwin Pumps › Wet-Prime Pumps
Wet-Prime Engine-Driven
Godwin Wet-PrimeCompact Engine-Driven · 4 Variants · Construction & Site Service
Compact engine-driven wet-prime portable pumps in four variants: Dewatering (GWP), Trash (GTP), Pressure (GPP), and Plastic (GPL). Built for construction sites, irrigation, agriculture, manhole drainage, and jetting applications where a Dri-Prime is overkill but commodity pumps don't last.
425
Max GPM
187 ft
Max TDH
2 in
Max Solids
4 Variants
Available
Why Wet-Prime
Wet-prime requires the pump be filled before starting — simpler and lower-cost than Dri-Prime. The trade-off is initial priming setup; the gain is significant cost savings on appropriate applications.
Four Application Variants
GWP (Dewatering), GTP (Trash), GPP (Pressure), GPL (Plastic) — each engineered for its specific service category.
Compact & Portable
Frame-mounted, single-person handling on smaller models. Easy site mobility and storage.
Engine-Driven Independence
Gasoline engine — grid-independent operation, no electrical connection required.
Cost-Effective
Significantly lower price point than Dri-Prime equivalents. Right answer when self-priming isn't required.
Application-Specific Design
GTP impeller and volute optimized for trash; GPP for pressure / jetting; GPL plastic body for chemical / saltwater service.
Compatible Accessories
Standard NPT discharge connections accept common quick-disconnect fittings, hoses, and accessories.
Dewatering Variants — GWP Series
Clean-water and semi-trash construction dewatering. Suitable for landscaping, irrigation, manhole drainage, vault pumping.
| Model | Suct/Disch (in) | Solids (in) | Max TDH (ft) | Flow (GPM) | Power (HP) | Fuel (gal) | Wt (lb) |
|---|---|---|---|---|---|---|---|
| GWP-25HX | 1 | ⅕ | 106 | 30 | 1.1 | 0.15 | 12.1 |
| GWP-50HX | 2 | ¾ | 95 | 158 | 4.0 | 0.66 | 51 |
| GWP-80HX | 3 | ¾ | 85 | 238 | 5.5 | 0.95 | 64 |
| GWP-100HX | 4 | ¾ | 92 | 383 | 8.0 | 1.58 | 123 |
Trash, Pressure & Plastic Variants
GTP — trash-laden water with up to 2-in solids. GPP — high-pressure jetting and remote firefighting. GPL — plastic body for agricultural chemicals and saltwater.
| Model | Variant | Suct/Disch (in) | Solids (in) | Max TDH (ft) | Flow (GPM) | Power (HP) | Wt (lb) |
|---|---|---|---|---|---|---|---|
| GTP — Trash | |||||||
| GTP-50HX | Trash | 2 | 1 | 98 | 185 | 5.5 | 104 |
| GTP-80HX | Trash | 3 | 1½ | 89 | 354 | 8.0 | 128 |
| GTP-100HX | Trash | 4 | 2 | 82 | 425 | 11.0 | 172 |
| GPP — Pressure | |||||||
| GPP-50HX | Pressure | 2 | ⅛ | 187 | 116 | 5.5 | 71 |
| GPL — Plastic | |||||||
| GPL-50HX | Plastic | 2 | ⅛ | 85 | 148 | 4.0 | 46 |
Source: Godwin Product Catalog 07.2015 (US). Specifications subject to change.
Wet-Prime Variant Selection Guide
Each wet-prime variant is engineered for a specific service category — use this guide to spec the right model:
Variant Selection
- GWP — Dewatering. Construction site dewatering, clean water with light abrasives and small solids, landscaping irrigation, utility manhole / vault drainage. Most common variant.
- GTP — Trash. Construction trash-laden water, stream / pond dewatering, septic tanks and manholes, water with light abrasives and 1–2-in solids. Semi-vortex impeller protects against clogs.
- GPP — Pressure. Marine construction, remote firefighting, landscaping, irrigation, tank cleaning, hydraulic jetting. 187 ft head capability is the value proposition.
- GPL — Plastic. Agricultural chemical transfer, general dewatering with chemical exposure, landscaping, irrigation, saltwater dewatering, swimming pool service. Plastic body resists chemical attack.
- Engine fuel. Gasoline standard — readily available, easy field service. No diesel option in this product line.
- Accessories. Standard NPT threaded suction and discharge connections. Compatible with common cam-lock fittings, suction strainers, and discharge hoses.
Wet-Prime Applications
Wet-prime pumps cover the small-portable end of the contractor / site-service market.
Construction Dewatering
Footing and foundation pit pumping, trench dewatering, post-rain site cleanup. GWP-50HX / GWP-80HX cover most needs.
Landscaping & Irrigation
Pond filling, irrigation transfer, drainage of low-lying areas. GWP and GPL series.
Agriculture
Crop irrigation, livestock water transfer, agricultural chemical handling (GPL plastic body for chemical service).
Marine Construction
Bilge pumping, dock and small vessel service, jetting (GPP for pressure-side work).
Manhole & Vault Service
Utility crew pumping for telecom vaults, water valve boxes, sewer manholes during inspection / repair.
Emergency / Disaster Response
Flood cleanup, basement dewatering, post-storm site recovery. GTP for trash-laden floodwater.
Need a Compact Site Pump?
Wet-Prime is the cost-effective answer for site dewatering, irrigation, and small-volume service. Quote within 24 hours.
Wet-Prime FAQ
What's the difference between Wet-Prime and Dri-Prime?
Dri-Prime self-primes from dry up to 28 ft of suction lift — you start the pump and it primes automatically. Wet-Prime requires the pump casing be filled with water before starting — if it loses prime mid-operation, it must be re-primed manually. Dri-Prime is more capable and more expensive; Wet-Prime is simpler and lower cost. Choose Wet-Prime when manual priming is acceptable and the cost difference matters.
Which Wet-Prime variant for general construction site service?
GWP-50HX or GWP-80HX cover most general construction dewatering. GTP-50HX or GTP-80HX if the water carries trash, leaves, debris, or small solids. Tell us your typical application and we'll spec accordingly.
Why GPL Plastic vs. GWP Dewatering?
GPL has a plastic pump body specifically for chemical resistance — agricultural chemicals, swimming pool chemicals, saltwater, and other applications where standard cast-iron would corrode. Performance is similar to GWP-50HX, with chemical compatibility being the differentiator. Spec GPL whenever the fluid has any chemical or salt content.
What's the suction lift on Wet-Prime?
Wet-Prime pumps achieve suction lift in proportion to their priming-charge level — typically 20–25 ft if properly primed. This is theoretical — in practice, atmospheric pressure limits suction to about 28–30 ft total at sea level. For deeper lifts, use Dri-Prime (28 ft from dry) or Heidra (no lift limit).
Do you stock Wet-Prime in Houston?
Wet-Prime models are configured-to-order and shipped factory-direct from Xylem. Lead times typically 1–3 weeks for standard configurations — faster than Dri-Prime equipment due to simpler builds. For emergency / immediate need, contact us about expediting.
Need a Wet-Prime Quote?
Tell us the application and we'll spec the right variant. 1–3 week typical lead time.
281.664.8000Godwin® is a trademark of Xylem Inc. and its subsidiaries.
Watermain Supply is a DBA of E4 Industrial LLC, an authorized Xylem dealer based in Houston, Texas.
Watermain Supply is a DBA of E4 Industrial LLC, an authorized Xylem dealer based in Houston, Texas.
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