The EcoFlow® mechanical seal support system contains a highly reliable and repeatable thermal actuator that continuously senses the seal water temperature. If the seal water should exceed the specified factory set-point the valve will modulate open discharging the hot water, displacing it with cool water. This cooler water will cause the EcoFlow® to modulate closed. This cycle will continue to occur as long as excessive heat is being transferred to the seal water causing the water temperature to exceed the valve’s factory set-point.

Typical Applications

The EcoFlow® valve is installed on the seal water outlet of a double mechanical seal to continuously maintain a constant seal water outlet temperature. This increases seal life by ensuring an optimum seal environment while drastically reducing water consumption and significantly increasing cost savings.

EcoFlow® mechanical seal support system

Design Features

  • Exclusive self-actuating Thermoloid® wax blend thermal actuator
  • All Stainless-steel body, fittings, spring, and plug
  • Corrosion-resistant – long service life
  • Ram-type plug for tight, reliable shutoff
  • Operates in narrow temperature band
  • Unaffected by pressure variations
  • Fail-safe design – fails open
  • Optional side port feature allows flushing debris from inside valve


  • Self-operating – no external power source required
  • Drastically decreases seal water consumption
  • Increases water treatment efficiency
  • Eliminates dry runs due to operator error
  • Increases seal life
  • Expands mechanical seal use to more applications
  • Decreases operating cost
  • Quick and easy installation

Seal Water Savings Example

To illustrate the water savings from the case study below that can be realized with EcoFlow®’s mechanical seal support system, we’ve used a typical seal manufacturer’s recommendation of 2.6GPM (Gallons per Minute) to be used to flush the seals versus EcoFlow’s ~3GPH (Gallons Per Hour), operating 8 hours a day, 5 days a week (2080 hours per year).

MFR Recommended flow: 2080 hours x 2.6 gallons per minute = 324,480 gallons of water per year.
EcoFlow: 2080 hours x 3 gallons per hour  = 6,240 gallons of water per year.

In our calculation, EcoFlow® can save ~318,000 gallons of water per year.

Read the complete case study: EcoFlow Sugar Produce Case Study





1/4” EcoFlow® SS


1/4” EcoFlow® SS w/ side port


3/8” EcoFlow® SS


3/8” EcoFlow® SS w/ side port


  1. Full open temperatures “XXX” available: 040°F, 045°F, 050°F, 060°F, 070°F, 075°F, 085°F, 095°F, 100°F, 105°F, 110°F, 115°F, 120°F, 125°F, 130°F, 140°F, 150°F, 160°F, 170°F, 175°F, 180°F, 190°F, 200°F and 210°F.
  2. Closing temperature is typically 10°F below opening temperature.


  • Sizes: ¼”, ⅜”
  • Maximum Operating Pressure: 400 PSIG (27.6 BAR)
  • Maximum Temperature: 250°F (121°C)


EcoFlow Product Sheet
EcoFlow Installation and Maintenance Instructions
EcoFlow Sell Sheet
Temperature Control Valves For Pumps and Pump Seals Brochure