Product Profile
The 
isolation valve bearing U.S. Patent Number 11,162,593 was developed for use on bottom dump hopper cars of all types. This device allows for the fast and efficient release of hazardous stored energy (compressed air) from the door dump system components (reservoir, filter, valve, cylinder and connecting lines) in one easy motion.
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Specifications
Part Number: 4489-701
Max Pressure: 150 PSI
Media: Compressed Air or other inert gases
Temperature Range: -40 F to 200 F
Seal Material: Low Temp Buna-N
Flow Capacity: 7.0 Cv (approximately 250 SCFM)
Port Size: ¾” NPT (ported on both sides of base)
