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This National Board certified safety relief valve is the industry standard for fired pressure vessels requiring V stamp compliance
Always verify specific gravity and flow requirements for your specific fuel type during installation
Key Benefits Durable Construction: Features a cast iron valve body and die-cast aluminum spring case for long-term service in demanding environments
this specific model is rated for 115V
or if the fan runs continuously regardless of the thermostat setting
York 025-41854-000 Pressure Switch 321894-708 This National Board certified safetyThe York 025 41854 000 Pressure Switch is a critical safety component engineered for high pressure monitoring in commercial HVACR systems. As a heavy duty high pressure cutout switch, this part is calibrated to open the control circuit at 500 PSI and reset at 375 PSI, providing essential compressor protection against excessive discharge pressures. Designed specifically for York HVAC replacement parts inventories, the 025 41854 000 York model ensures