Product Details
Assembly No. | Inlet Flange (4" Sump) | Outlet (4" TTMA) | Dimensions | Weight | Fb-MAX Per TTMA RP86 |
---|---|---|---|---|---|
EV46921AL** | B.C.: 7.25" [184mm]" 8 Holes: .563" Dia. [14.3mm] | B.C.: 4" GROOVED O.D. 4.5" [114.3mm] 8 Holes: 4" GROOVED O.D. 4.5" [114.3mm] | A: 4.38" [111.3mm] B: 6.25" [158.8mm] | 10.6lbs [4.0kg] | 44,400lbs. [20,140kg.] |
EV46922AL** | B.C.: 7.25" [184mm]" 8 Holes: .563" Dia. [14.3mm] | B.C.: 5.88" [149mm] 8 Holes: .438" Dia. [11.1mm] | A: 4.38" [111.3mm] B: 5.00" [127.0mm] | 10.9lbs [4.1kg] | 44,400lbs. [20,140kg.] |
* Values shown are test values. Actual values may vary due to service conditions. ** Last two letters of part number designate seal material as shown on table below. ŧŧ Fusible plug melts at 212°F [100°C]. If valve is subject to higher temperatures, the fusible plug must be relocated to isolate fusible from heat. Caution: Valve must be properly installed and maintained. Never bottom load through emergency valve without first opening valve. Failure to do so may result in damage to the tank and/or valve. |
Part # Suffix | Description | Valve Temp. Range * ŧŧ |
---|---|---|
TS | Teflon product contact seals, nitrile interior seals, and polyurethane air piston seal | -40°F to +220°F [-40°C to 104°C] |
TS030 | Teflon product contact seals, FKM "A" interior seals | 5°F to +400°F [-15°C to 204°C] |
TS038 | Teflon product contact seals, fluorosilicone interior seals, and polyurethane air piston seal. | -50°F to +220°F [-45°C to 104°C] |
VB | FKM "BLT" product contact seals w/ polyurethane air piston seal. | -15°F to +220°F [-45°C to 104°C] |
VF | FKM "GFLT-s" product contact seals w/ polyurethane air piston seal | -11°F to +220°F [-24°C to 104°C] |
Engineering Bulletins
EB-01-12: Water Flow Rates of Betts Emergency Valves
EB3-00: MAWP and Bursting Pressure Ratings for Betts Valves
EB2-14: Jack Screw Usage Instructions for Internal Air Emergency Valves
EB4-12: Modification of Internal Air Emergency Valve Breather Port
EB1-11: Important Design Modification Alert for Betts Internal Air Valves
EB1-03: Air Emergency Valve System
Videos
MV-EV001 Internal Air Emergency Valve Rebuild