Ensure you verify the lift-off pressure and BTU rating against your specific boiler nameplate to maintain code compliance and system safety

allowing for easy adjustment of the snap-acting bypass and pilot flame

Can I use this relay to replace a universal potential relay

Designed for professional HVAC furnace repair

High-Flow Pilot Design: Provides consistent opening and closing cycles under varying pressure drops across the valve

Spirax-Sarco 0190192 Vacuum Breaker Refrigerant Ensure you verify the lift-offFor steam and liquid system protection, the Spirax Sarco 0190192 (Model VB21) is the industry standard for preventing vacuum formation in heat exchangers, jacketed kettles, and steam coils. As a veteran technician knows, a vacuum in these systems can lead to catastrophic coil collapse, water hammer, or stalled condensate drainage. This 1 2" NPT vacuum breaker is engineered with a high grade 303 stainless steel body and a precision ground stainless