4″ Aluminum Flat Seat External Air Emergency Valve – 90 Degree Elbow
- Air 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.
Air operated valves are provided with an external air cylinder to help prevent gasoline or other products from contaminating the air supply. The air cylinder is hard-coated aluminum with a polished stainless steel shaft. Cylinders have 1/8” NPT port for air connection and are supplied with a fusible plug installed.
Product Details
| Assembly Number | Outlet | Wt. | Dimensions | Inlet Flange | Outlet Flange |
|---|---|---|---|---|---|
| EV46435AL* | 4" Grooved | 12.7lbs | A: 4.38" B: 6.25" | B.C.: 7.25" Holes: 8-9/16 | B.C.: N.A. Holes: N.A. |
| EV46428AL* | 4" Flanged | 12.7lbs | A: 4.38" B: 5.00" | B.C.: 7.25" Holes: 8-9/16 | B.C.: 5.88" Holes: 8-7/16 |
| *Replace asterisk in part number to designate seal material. Example Assembly EV46435ALB (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: 4" Valves F=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. |
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Repair Kits and Accessories
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.
Prop 65
WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov. For additional information on Betts products and Proposition 65 list please see: https://www.bettsind.com/prop-65/