Seaflo 33 & 42 series diaphragm pump start the thermal protection device when the motor temperature reaches 125℃.

Turn on the power supply, open the water switch, the pressure switch senses the water pressure is less than the stop pressure to start the start water pump; turn off the water switch, the pressure switch induction water pressure reaches the stop pressure break circuit, the water pump stop working.

The actual water flow of the waterway is less than the water flow of the water pump. The by-pass switch is started, and part of the water flow circulates internally and releases the pressure, to prevent the pressure switch from starting frequently.

The working principle is different. The function of the pressure switch is to automatically break the switch when the pump reaches the set pressure value, and the pump stops working. The function of the by-pass switch is that when the pressure in the pump reaches the maximum value, the by-pass switch can make the water in the pump circulate, stop pumping but the water in the pump will also circulate, need to turn off the power pump to stop.

The opening flow rate is unadjustable, but can be customized.

The best mounting position for Seaflo diaphragm pump is placed horizontally. If installed vertically, pump head down to prevent water flow into the motor. The diaphragm pump can be mounted upside down without affecting the pressure and flow rate.

The noise of the 51 diaphragm pump is 70DB and its life-span is 1,000 hours.

Seaflo series of pumps have been tested for 24-hour life and can continuously work for 24 hours.

O-ring, we generally do EPDM (used for marine & RV sector) and VITON (used for chemical liquid-agricultural industry). The NBR material can be customized, with MOQ: 1,000 sets per order.

Intermittent work is because there is a temperature control protection in the pump, which stops when the temperature reaches a certain value and works after cooling. Continuity work does not install temperature control protection, such as Seaflo 31 series pump, because the motor temperature is not high, do not need to add thermal protection switch, can work continuously.

No, it can dry run for a short time (about 3 minutes). Seaflo pump uses a pressure switch and only stops working when the pressure value reaches the critical point. Or cut off the power from the outside.

Seaflo 21 series diaphragm pumps have a maximum withstand liquid temperature of 60℃.

The life-span of Seaflo 21 series motor is about 600 hours, diaphragm life is about 1000 hours, 31 series motor is about 800 hours, diaphragm life is about 800 hours; 41 series motor is about 800 hours, diaphragm life is about 800 hours.

The 3-4-5 chamber diaphragm pump motors all last between 800 and 1000 hours, and the diaphragm life between 800 and 1000 hours.

Seaflo submersible pumps can be used in areas such as yachts, RV & bottled water, as well as some edible equipment areas.

Seaflo 12 volt submersible and line pump 280GPH and 500GPH can pump 40℃ of diesel and 80℃ of salt water; 200GPH can only pump 80℃ of salt water, not diesel.

Because the float is slightly lower than the impeller, it can be drawn to a lower water level. This automatic bilge pump has lower water levels than other automatic bilge pumps.