Watson McDaniel Pilots have been in service for years. Their warranty performance since that time has resulted in a practically nonexistent failure rate. Each Watson McDaniel pressure pilot retrofits almost all Spirax Sarco valves made in this century and even the last). Each pilot is individually tested and calibrated before shipment. We believe Watson McDaniel pilots are by far the best way to repair and upgrade existing Spirax Sarco valves for years of trouble free service. * Cast Steel Body * Replaces Cast Iron & Cast Steel '25P' Type Pilots * Yellow Spring * Stainless Steel Seat & Disc * Direct Replacement * Replaces 54819 * 3-25 PSI Spring Range * SKU: PP-Y-25P Specification Sheet
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