DC Diaphragm Water Pump – 12V/24V Self-Priming, Bypass Return, Dry-Run Safe

Key Features

• Built-In Bypass Return Valve: At low flow, the bypass circuit opens to recirculate water internally — stabilizing pressure, preventing pump hunting, and protecting the pressure switch from rapid on/off cycling.
• 3m Self-Priming, Dry-Run Safe: Self-priming height up to 3 meters. Can run dry without damage — no priming water needed before startup.
• Pure Copper Motor – 2800 RPM: High-performance copper-wound rotor with 2800 RPM high-speed motor delivers powerful, consistent flow output.
• 12V / 24V DC Compatible: Works with standard RV, marine, and off-grid 12V and 24V DC electrical systems. Must use appropriate DC power supply or battery — do NOT connect to 220V AC.
• Quick-Connect Fittings Included: 2× 13mm barb adapters and 1× universal inline filter included. Standard connections, leak-free installation, easy to set up.
• Automatic Pressure Switch: Pump auto-starts when tap opens and stops when tap closes — hands-free operation for RV and marine water systems.

Operating Conditions

• Ambient Temperature: ≤ +50°C
• Liquid Temperature: 0°C to +65°C
• Liquid pH Range: 5.0 – 10.0
• Power Supply: 12V DC / 24V DC (50Hz)
• Voltage Tolerance: ±10% of rated voltage
• Max Particle Size in Liquid: ≤ 0.1 volume ratio, particle diameter ≤ 0.2mm (use inlet filter for particulate liquids)

Ideal Use Cases

• 🚐 RV & Campervan Water Systems: Shower, sink, and toilet flushing with stable pressure on 12V/24V house battery
• 🚤 Marine & Boat Freshwater Systems: Galley, head, and washdown supply on yachts and motorboats
• 🏕️ Off-Grid & Camping: Portable water pressure from tanks or barrels — no mains connection needed
• 🌿 Agricultural Spraying: Consistent pressure for spray nozzles and irrigation systems
• 💧 Water Transfer: Tank-to-tank transfer, pond filling, general liquid pumping (clean water, pH 5–10)

⚠️ Important Safety Notes

• Do NOT over-prime: Ensure at least one outlet is open during operation. If you hear clicking from the pressure switch, adjust the switch or increase outlet flow.
• Do NOT submerge the motor: Motor is not waterproof. Surface splashing is acceptable, but do not immerse in water or operate in prolonged wet environments.
• Do NOT connect to 220V AC: This is a 12V/24V DC pump only. Use a DC power adapter, voltage converter, or battery. 220V will destroy the motor.
• Use inlet filter for particulate liquids: Install a filter (80 mesh or finer) on the inlet when pumping liquids with particles to prevent impeller clogging and pressure loss.

Installation Notes

Connect the inlet port to your water source using the included 13mm barb adapter and hose. Connect the outlet to your water line. Install the included inline filter on the inlet. Wire the red lead to DC positive and black to negative (12V or 24V). The built-in pressure switch will auto-start the pump when a tap is opened and stop it when closed. No priming water required — the pump self-primes up to 3 meters.

• Voltage: 12V DC / 24V DC
• Motor: Pure copper winding, 2800 RPM
• Self-Priming Height: 3 meters
• Dry-Run Safe: Yes
• Bypass Return Valve: Built-in (low-flow pressure stabilization)
• Pressure Switch: Built-in automatic (starts/stops with tap)
• Inlet/Outlet: 13mm barb (adapters included)
• Included Accessories: 2× 13mm barb adapters, 1× universal inline filter
• Ambient Temperature: ≤ 50°C
• Liquid Temperature: 0–65°C
• pH Range: 5.0–10.0
• Country of Origin: China