- Body Size: 2" FNPT X 2" FNPT
- LP-Gas Flow Rate: 202 GPM @ 10 psid
- NH3 Flow Rate: 177 GPM @ 10 psid
Snappy Joe™ Emergency Shutoff Valves for Railroad Tank Cars
Snappy Joe Emergency Shutoff Valves (ESVs) are designed for railcar protection and attached to the shutoff valves on railroad tank cars (refer to installation drawing). Typically three ESVs are used – two on the liquid lines and one on the vapor line. NFPA 58 regulations call for ESV protection on both sides of the transfer hose or piping. Types N562 and N563 are UL® listed for service in Propane and Anhydrous Ammonia. Its Nitrile elastomer are UL approved to -40°F / -40°C.
Pneumatically operated, the valve is opened and closed by means of a standard quick-disconnect coupling (furnished). Approximately 20 to 60 psig / 1.4 to 4.1 bar is needed to open the valve, depending upon tank car pressure. Remote closure from one or more points, such as the unloading riser, is accomplished by exhausting pressure from the valve’s piston chamber with a pneumatic control valve.
Ease of Use:
• Nipple lengths attached to the 2 in. NPT female inlet are field selectable. These nipples can be easily
secured and replaced.
• Outlet is FNPT or ACME for easy connection.
• Pneumatically operated with quick disconnect coupling (included).
Application Flexibility:
• UL approved for LPG and Anhydrous Ammonia (Nitrile (NBR) only).
• Comprehensive line of elastomers for all other compressed gas service.
• A 1/4 in. FNPT opening in the hex portion can be used to install a bleed valve.
System Protection:
• Remote shutoff capability.
• Emergency shut-off in the event of fire: valve closes at 212°F / 100°C.
Durability:
• All Stainless steel construction.
• Wrenching Hex to prevent damage when connecting or disconnecting.
• Hardened Stainless steel threads to reduce wear.