

Goulds 4SDX12G3KC, 4SDX Series, Explosion Proof Submersible Sewage Pump
Product Overview
When a standard sewage pump fails in a hazardous location, the consequences extend far beyond a simple system shutdown; you are looking at potential safety violations, environmental contamination, and catastrophic equipment damage. During peak rainy seasons or high demand industrial cycles, a pump failure in a Class I, Group D environment can halt an entire project and trigger expensive emergency remediation. With lead times for explosion proof motors often stretching into months due to specialized manufacturing requirements, waiting for a failure is not a viable strategy. Securing this Goulds 4SDX unit now ensures your facility remains compliant and operational, providing the peace of mind that comes with a robust, pre-emptive installation schedule.
The Goulds 4SDX Series utilizes a heavy duty dual seal system and a non clog impeller design that outperforms standard submersible pumps in volatile environments. This technical advantage translates directly into reduced maintenance labor and fewer high risk interventions in hazardous wet wells. By choosing a pump specifically engineered for hazardous locations, you eliminate the risk of code non compliance and the hidden costs associated with premature motor burnout found in lower grade alternatives. Maintaining a stock of these specialized units or installing them as the primary specification gives your firm a significant competitive edge in the municipal and industrial wastewater sectors.
Product Specifications
| Specification | Detail |
|---|---|
| Material | Cast Iron Volute and Motor Housing |
| Impeller Type | Dual Vane, Non-Clog Cast Iron |
| Certification | UL and CSA listed for Class I, Group D |
| Horsepower | Variable by configuration (Standard 1HP to 5HP motor frames) |
| Discharge Size | 4 inch Flanged Connection |
| Maximum Solid Size | 3 inch spherical solids handling |
| Max Pressure/Head | Up to 100 feet depending on specific gravity |
| Seal Type | Dual Mechanical with Tungsten Carbide vs Silicon Carbide |
| Finish | Epoxy coated for corrosion resistance |
Available Models & Sizes
The 4SDX Series is available in multiple horsepower configurations and voltage options including 208, 230, and 460-volt three phase motors to meet specific site requirements. Please contact our technical sales team for full configurations, performance curves, and updated pricing for various motor sizes within the 4SDX range.
Key Features
- Explosion proof motor construction designed for Class I, Division 1, Group D hazardous locations.
- Dual vane semi-open impeller with pump-out vanes for superior solids handling and seal protection.
- Tandem mechanical seals provide an extra layer of protection against liquid entry into the motor chamber.
- Continuous duty rated motor allows for reliable performance in high demand municipal lift stations.
- Heavy duty cast iron construction ensures long term durability in abrasive wastewater environments.
- Seal fail sensor probe warns of moisture intrusion before motor damage occurs, saving on total repair costs.
Common Applications
- Industrial and chemical processing wastewater systems.
- Municipal parks and public spaces with remote lift stations.
- Commercial landscape irrigation drainage for high traffic facilities.
- Agricultural and crop irrigation runoff management in volatile areas.
- Municipal wastewater and sewage collection systems.
- Erosion control and stormwater systems in hazardous industrial zones.
Installation Notes
Installation must be performed by qualified personnel following the National Electric Code for hazardous locations. All conduit entries must use approved explosion proof seals to maintain the integrity of the Class I, Division 1 rating. It is recommended to use a Goulds Water Technology control panel equipped with seal fail and high temperature monitoring circuits to ensure full warranty coverage and system longevity. Proper Guide Rail systems should be used for easy retrieval during scheduled maintenance inspections.
Top Reviews
"Absolutely incredible service! The Goulds GT20 pump we purchased runs flawlessly and better performance than our old unit ever had. Reliable pressure, easy to install, and it’s already improved our irrigation system. Highly recommend ASIW Supply!"
"Professional and dependable. The Goulds J10 pump we ordered was delivered quickly and exactly as described. Installation was smooth, and it handles daily demand without an issue. ASIW Supply is my go-to for pumps."
"We ordered custom 2-1/2" PVC pipe sections, and the precision was spot-on. The cuts were clean, fit perfectly, and saved us hours of labor. ASIW Supply made the process easy and the product quality is outstanding."
"Exceptional from start to finish. Needed a replacement GT20 in a hurry. ASIW Supply had it in stock and shipped same day. The pump is running beautifully and exceeded expectations."
"ASIW Supply is fantastic. Their Goulds J15 pump came packaged securely, with clear documentation, and the support team answered all our technical questions. Our system has never run better."
"We’ve tried other suppliers, but none compare to ASIW Supply. The 2-1/2" PVC pipe we purchased was durable, exact to spec, and shipped fast. Their products and service are absolutely worth the investment."