3″ Flat Seat Aluminum Emergency Valve-Manual-Straight

  • Cable Operated
  • Groove or Flange Outlet
  • Buna Urethane or Viton Seals

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 #OutletWt.DimensionsInlet FlangeOutlet Flange
EV46539AL*3" Grooved7.2A: 5.71"B.C.: 6.25"
Holes: 6-9/16
B.C.: N.A.
Holes: N.A.
EV46540AL*3" Flanged7.2A: 4.25"B.C.: 6.25"
Holes: 6-9/16
B.C.: 4.88"
Holes: 8-7/16
*Replace asterisk in part number to designate seal material.
Example Assembly
(3” Flat Seal Aluminum – Cable – 90-degree elbow – Grooved Outlet)

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

Force rating from TTMA RP86: 3" Valves Fb-max=Grooved 7,469 lb. / Flanged 10,754 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