Spence 07-07750-00 Repair Kit

The Spence 07-07750-00 Repair Kit is a comprehensive rebuild solution specifically engineered for 1-1/4" Type E E-Main valves. This high-performance kit provides every critical internal component required to restore the pressure and temperature regulation accuracy of your pilot-operated steam regulator. Designed for cast iron full port valves, this kit addresses common failure points like diaphragm rupture and seat erosion, which lead to set point hunting or valve overshooting. By utilizing the included stainless steel diaphragms and precision-machined seat ring and disc, technicians can maintain the packless, single-seat design integrity that Spence Engineering is known for in industrial steam systems. Utilizing OEM-grade parts ensures exact fitment and maintains the original flow coefficient (Cv) values across demanding HVAC and process applications. Regularly servicing your Spence E-Valve with this kit minimizes downtime and prevents the risk of steam leaking or failure to close under full load conditions.

• Complete Component Match: Includes every necessary repair part: valve stem, two stem nuts, seat ring, valve disc, high-pressure spring, two stainless steel diaphragms, pressure plate, and gaskets.
• Reliable Steam Control: Restores the normally closed functionality and tight shut-off performance of the Type E Main Valve.
• Industrial Durability: Built to withstand the thermal stresses and high pressures of cast iron 1-1/4 inch valve bodies.
• Precision Performance: Eliminates hunting and ensures the pilot signal correctly positions the main valve for constant delivery pressure.

What causes a Spence E-Main valve to overshoot its set pressure?

Overshooting is frequently caused by foreign matter trapped between the seat ring and disc or a plugged bleedport. Installing the components in this rebuild kit ensures a clean, tight seal and proper stem travel.

Is this kit compatible with all 1-1/4" Spence valves?

This kit is specifically designed for the Type E series full port cast iron main valves. It is essential to verify your valve model on the nameplate to ensure compatibility with the 07-07750-00 specifications.

How do I know if the diaphragms need replacement?

If the valve fails to open or if steam is leaking from the diaphragm chamber vents, the metal diaphragms likely have pinholes or cracks. This kit includes two SST diaphragms to restore the pressure boundary.

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.