6″ × 4″ Aluminum Tapered Seat Emergency Valve – External Air – Sraight
- Air Operated
- Stainless Trim
- Teflon Encapsulated Seals
Betts High Flow Emergency valves provide increased flow rates compared to 4” emergency valves. Valves feature Teflon encapsulated seals for compatibility with a wide range of products and a special lift mechanism for smooth operation. Body is constructed of aluminum with stainless steel trim. 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.
Available in Long-Radius and Short-Radius elbows. Use the Long-Radius for maximum flow or use the Short-Radius where clearance for piping is restricted.
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.
Product Details
| Assembly Number | Description | Inlet Flange (6" Sump) | Outlet | Dimensions | Weight | Fb-MAX Per TTMA RP86 |
|---|---|---|---|---|---|---|
| EV46479ALTS | Straight - Air Operated - 4" Grooved Outlets | B.C.: 9.25" [235mm]" 12 Holes: .563" Dia. [14.3mm] | 4" Grooved O.D. 4.5" [114.3 mm] | A: 7.63" | 16.0lbs | 18,300lbs. [8,300kg.] |
| EV46480ALTS | Straight - Air Operated - 4.5" Grooved Outlets | B.C.: 9.25" [235mm]" 12 Holes: .563" Dia. [14.3mm] | 4.5" Grooved O.D. 5.0" [127 mm] | A: 8.38" | 16.0lbs | 18,300lbs. [8,300kg.] |
| EV46478ALTS | Straight - Air Operated - 4" Flanged Outlets | B.C.: 9.25" [235mm]" 12 Holes: .563" Dia. [14.3mm] | 4" TTMA Flanged B.C.: 5.88" [149mm] 8 Holes: .438" Dia. [11.1mm] | A: 7.25" | 16.0lbs | 18,300lbs. [8,300kg.] |
