ASCO solenoid valves are typically made up of an operator and valve body; the operator comprises the coil, core, core tube, shading coil, and spring.ASCO has built a solid reputation in the HVAC sector as a dependable producer of a vast array of high-quality heating and cooling components. Its HVAC parts include filters, flow controllers, and manifolds. https://www.partshnc.com/m/asco/asco-solenoid-valve-replacement-parts?srsltid=AfmBOoqhYIbW0fv-zpr3xj19bixs1mwlunmzMtbWGPNYJ_knRV6t9x3U