4″ Aluminum Flat Seat Emergency Valve – Manual – 90 Degree Elbow

Betts flat seat style emergency valves combine Betts quality with an economical design. Valves feature aluminum construction with a specially designed seat disc to provide positive sealing. Shear section tested per TTMA RP84 and meets 49CFR178.345-8.

Cable operated valves are supplied with a universal lever arm which provides up to 8 cable travel options to work with most operators. Lever arm is “E” Coated to provide exceptional corrosion resistance.

Parts List

Product Details

Assembly NumberOutletWt.Dims. ADims. BInlet Flange B.C.Inlet Flange Holes
EV46398AL*4" Grooved10.44.38"6.25"7.25"8-9/16
EV46399AL*4" Flanged10.44.38"5.00"7.25"8-9/16
*Replace asterisk in part number to designate seal material.
Example Assembly
(4″ Aluminum Flat Seat Emergency Valve - Manual - 90 Degree Elbow)

Specify Viton seals by substituting "V" for "B" in Assembly Number

Force rating from TTMA RP86: 4" Valves Fb-max=15,500 lb.

CAUTION: Never bottom load through emergency valves without first opening valve. Failure to do so may result in damage to the tank and/or valve.

Additional Options

Left-hand valves are available with air cylinder or cable lever arm on opposite side of valve as shown at right. Add suffix –005 for left-hand option. Add suffix –004 for optional screen.

4″ Valves are available with Stainless Trim, add suffix 010.

Engineering Bulletins

EB-01-12: Water Flow Rates of Betts Emergency Valves

EB3-00: MAWP and Bursting Pressure Ratings for Betts Valves

EB-02-03: Cable Emergency Valve System Schematic