Dwyer Visi-Float® Flowmeter, Model VFB, 4 in. scale. Accuracy ¬±3% of full scale. Meter bodies are machined from solid clear acrylic plastic. Scale is hot pressed into body. Will withstand pressures up to 100 psi. and temperatures up to 150F. Tapped in back for 1/8 in. NPT. Metal mounting inserts in back with Buna N o-rings. Dual range in English & metric available on some models. Range, to be selected from list below, must be provided at time of order. Price is dependent on fittings and range seleted. Enquire about price when ordering.