In line foam eductors have a metering head with an easy-to-read knob for use with Class A, B and AR-AFFF foam at a variety of percentages. The meter head is equipped with a unique back flush push-button for fast and easy cleaning right on the scene, and is secured to the eductor body with a rugged disconnect. All controls are easy to use with gloves. The eductors are made of hardcoat anodized aluminum for corrosion protection.