Spence Engineering P-T14-C1S1DA11 Temperature Pilot

The Spence Engineering P-T14-C1S1DA11 is a robust, spring-operated T14 temperature pilot specifically engineered for steam service applications requiring precise modulation. This cast iron pilot, also known as T14120220, operates within a 120-220 degree F range, making it a staple for domestic water heaters, oil heaters, and heat exchangers. It features a heavy-duty 700 style bulb and bronze thermostat material connected via a 10-foot capillary length, allowing for flexible remote sensing. The internal assembly utilizes 1/4" metal trim to ensure durability under consistent thermal cycling. Because this pilot is interchangeable across all Spence main valve sizes (such as the E series), it provides technicians with a versatile solution for steam pressure and temperature regulation. The integral strainer screens protect the pilot seat from pipeline debris, while the self-contained design allows for rapid response to load changes without external power sources.

Technical Benefits for Contractors

• Interchangeable Design: Mounts to any size Spence main valve, simplifying truck stock and field replacements.
• Overheat Protection: The thermal element is designed to withstand temperatures up to 100°F above its set point without losing calibration.
• High-Accuracy Control: The 700 style bulb ensures faster heat transfer for tighter control loops in industrial steam systems.
• Rugged Construction: Cast iron body and metal-to-metal seating offer superior longevity compared to lighter-duty alternatives.
• Ease of Adjustment: Features a standard handwheel for straightforward set-point calibration during commissioning.

Common Installation Questions

Can the capillary be shortened?
No, the 10-foot capillary length is a factory-sealed thermal system. Cutting or kinking the tubing will cause pilot failure.

What is the maximum overheating limit?
This Spence T14 pilot can handle a temporary temperature override of up to 100°F above the 220°F limit without damaging the bellows.

Is this compatible with E-series valves?
Yes, the P-T14-C1S1DA11 is designed to actuate any standard Spence main valve for accurate steam regulation.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.