Compact DC foam pump designed for straightforward integration into hand washers, automatic soap dispensers and small spraying machines. The Small 310 selfpriming liquid pump runs on lowvoltage DC (3V or 3.7V) and is built for DIY projects and retrofit applications where reliable foam or liquid dispensing is needed. Key benefits Selfpriming design: starts drawing liquid without manual priming, reducing setup time and maintenance. Lowvoltage operation: compatible with DC 3V and 3.7V power sources for safe, batterypowered or lowvoltage systems. Compact Small 310 size: fits into compact housings and custom enclosures for DIY or replacement use. Versatile dispensing: suitable for foam soap delivery, liquid pumping and small spray applications, enabling multipurpose use. Main features Functionality: foam pump / liquid pump with selfpriming capability for continuous or intermittent dispensing. Compatibility: designed for DC 3V and 3.7V power input; intended for use in DIY hand washers, automatic soap dispensers, and small spraying machines. Model/size: Small 310 pump — compact form factor for constrained installation spaces. Performance: consistent, lowvoltage operation suitable for smallscale dispensing tasks. Typical use cases Automatic soap dispenser retrofit: or upgrade the pump in an existing automatic soap dispenser to restore foam or liquid dispensing capability. DIY hand washer projects: integrate into a custombuilt hand washer using lowvoltage power for safe, portable operation. Small spraying machines: use for light spraying or misting of cleaning solutions or liquids in compact portable devices. Integration and handling Intended for lowvoltage DC systems; ensure a stable 3V or 3.7V supply compatible with the pump's rated voltage. Compact Small 310 form factor allows easy mounting in custom housings and small dispensers. suited for smallvolume dispensing tasks and lowflow applications typical of foam soap and handheld sprayers. Regularly check seals and liquid paths during installation and maintenance to maintain selfpriming performance. What this pump solves Eliminates manual priming and complex plumbing for small dispensers. Provides a compact, lowvoltage pumping solution for DIY and retrofit applications where space and safety are priorities. Offers a simple, interoperable component for hobbyists, makers, and technicians building or repairing automatic soap dispensers, hand washers, and small spraying machines. Specifications (as listed) Voltage: DC 3V / 3.7V Type/Size: Small 310 Functions: Soap pump, foam pump, selfpriming liquid pump Applications: DIY hand washer, spraying machine, automatic soap dispenser If you need a compact, lowvoltage selfpriming pump for foam or liquid dispensing in DIY or small appliance projects, the Small 310 DC 3V / 3.7V foam pump provides a practical, easytointegrate solution.