The 399/392 versions have slightly reduced I.D. for O.D. tubing service.
STANDARD FEATURES 

	100% American made.
	Large inventory supports quick delivery.
	CNC machining ensures consistent adherence to precise tolerances.
	Upper and Lower Ertalyte bushings prevent seizing and galling.
	Baked-on powder epoxy coating (iron bodies).
	Dovetail seat retention method.
	0-rings incorporated into seat at potential leak points (stem hole and flange face) provide positive seal.
	Each valve tested to 110% of stated pressure rating.

In addition, the following special features have been incorporated into our food service line of butterfly valves.

	Choice of high polish, satin finish or teflon coated disc stems.
	Choice of FDA approved white seats.
	One piece disc stem for a true sanitary design.

MATERIALS OF CONSTRUCTION

HOUSINGS: 316 STAINLESS STEEL, CAST IRON AND NODULAR IRON (EPOXY COATED), ALUMINUM

DISC STEM ASSEMBLY: 316 S/S OR 17-4 S/S (AVAILABLE WITH SATIN OR HIGH POLISH FINISH), ELASTOMER, TEFLON, HALAR AND OTHER CUSTOM COATINGS AVAILABLE

SEATS: TEFLON, EPDM, NITRILE, WHITE
                                                 NITRILE, BUNA
                                                 (All seat materials FDA Approved)

ULTRAFLO MODEL 390/399 IS DIMENSIONALLY INTERCHANGEABLE WITH KEYSTONE FIG 99/999
ULTRAFLO MODEL 392/393 IS DIMENSIONALLY INTERCHANGEABLE WITH KEYSTONE FIG 992/993