AMT 4850-K7 Self-Priming Bronze Pump Head Kit
If you're rebuilding or upgrading a 12-volt DC pump, the AMT 4850-K7 gives you a fresh, unassembled pump head built around the same reliable design found in the AMT 4850-97 assembly. It's made from solid cast bronze, so it stands up well to repeated use without the corrosion issues that plague lower-grade materials, and the Buna-N mechanical seal and O-ring keep the internal chamber sealed tight against leaks and wear.
What makes this kit a practical choice is its self-priming design. You don't need to manually flood the line before startup — the pump head is engineered to draw liquid on its own, up to roughly a 4-foot suction lift, which saves time and hassle in the field or in the shop. With 3/4" NPT threading on both suction and discharge sides, it fits neatly into most standard 12V DC pump setups without requiring extra adapters or custom fittings.
While AMT often positions this pump line for marine and aquaculture use, the 4850-K7 is just as capable in everyday dewatering, recirculating, or general utility pumping jobs — think small transfer tasks, off-grid water movement, or mobile 12V systems where a compact, self-priming bronze pump head is exactly what's needed.
Key Features
- Cast bronze pump head construction for long-term durability
- Buna-N mechanical seal and O-ring for a reliable, leak-resistant fit
- Self-priming design, no manual priming required before startup
- Sold unassembled for hands-on installation or rebuild projects
- Compatible reference fit with the AMT 4850-97 pump assembly
Applications
- Dewatering and general liquid transfer
- Recirculating systems
- 12V DC utility pumping
- Off-grid, mobile, and small transfer setups
- Marine, salt water, and live well tank use (where applicable)
Specifications
- Port Size: 3/4" NPT suction and discharge
- Material: Cast bronze
- Seal Type: Buna-N mechanical seal and O-ring
- Maximum Working Pressure: 50 PSI
- Maximum Operating Temperature: 180°F
- Maximum Suction Lift: Approximately 4 ft
- Motor Compatibility: 1/12 HP, 12V DC
- Assembly Condition: Unassembled kit
Frequently Asked Questions
Q: Is the AMT 4850-K7 sold fully assembled or as individual parts?
A: It's sold as an unassembled kit, meaning the pump head components are supplied separately for you to install or rebuild yourself.
Q: Can this pump head be used for non-marine applications?
A: Yes. While it's often associated with marine use, the self-priming bronze design works well for general dewatering, recirculating, and 12V DC utility pumping needs.
Q: What tools or skills are needed to install the 4850-K7 kit?
A: Basic mechanical skills and common hand tools are typically sufficient, since the kit is designed to fit the existing 4850-97 pump housing and motor mount.
Q: Does the pump head require priming before use?
A: No manual priming is needed. The self-priming design allows it to draw liquid on its own up to its rated suction lift.
Q: What kind of maintenance does the Buna-N seal require?
A: The Buna-N seal is durable under normal operating conditions, but it should be inspected periodically for wear and replaced if you notice leaking or reduced suction performance.
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